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Volvo TSI Manual

Volvo TSI Manual

Vehicle management system, vectro ii 1998-
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  • Page 2 Greensboro, NC USA Order number: PV776-144528 © 2001 Volvo Trucks North America, Inc., Greensboro, NC USA All rights reserved. No part of this publication may be reproduced, stored in retrieval system, or transmitted in any forms by any means, electronic, me- chanical, photocopying, recording or otherwise, without the prior written permission of Volvo Trucks North America, Inc.

  • Page 3: Table Of Contents

    Contents General ....................7 Vehicle Management System ..............7 Engine Control System Glossary ............8 Specifications ..................10 Description of Signals ................10 EECU (D7C) and Breakout Box Connected in Series Between EECU and Wiring Harness ............... 10 EECU, D7C, with Breakout Box Connected to Wiring Harness Only 13 EECU (D12B and D12C), Breakout Box Connected in Series Be- tween EECU and Wiring Harness .............
  • Page 4 Fault Tracing Strategy ............... 88 MID 128 EECU ..................92 MID 128 Fault Code Table ..............92 MID 128 PID 45 Preheater Status ............96 Fault Codes ..................96 MID 128 PID 45 Preheater Status, Check .......... 97 MID 128 PID 49 ABS Control Status ..........98 Fault Codes ..................
  • Page 5 Fault Codes ..................140 MID 128 PID 175 Engine Oil Temperature, Check ......141 MID 128 PID 228 Road Speed Sensor Calibration ......144 Fault Codes ..................144 MID 128 PID 228 Road Speed Sensor Calibration, Check ....145 MID 128 PPID 86 Engine Brake Torque Percent ......146 Fault Codes ..................
  • Page 6 MID 128 SID 24 Rack Position Sensor ..........175 D7C only ..................175 Fault Codes ..................175 MID 128 SID 24 Rack Position Sensor, Check ......... 176 D7C only ..................176 MID 128 SID 33 Fan Control ............. 177 Fault Codes ..................177 MID 128 SID 33 Fan Control, Check ..........
  • Page 7 MID 144 PPID 70 Pedal Switches, Supply, Check ......212 MID 144 PPID 71 Cruise Control and Engine Brake, Supply Switch 215 Fault Codes ..................215 MID 144 PPID 71 Cruise Control and Engine Brake, Supply Switch, Check ..................216 MID 144 PPID 72 Accelerator Pedal, Supply Sensors .....

  • Page 9: General

    Group 28 General General Vehicle Management System W2002520 This information covers the Vehicle Management System, which includes VECTRO II electronics, the vehicle ECU, and other control systems used in the vehicle.

  • Page 10: Engine Control System Glossary

    Group 28 General Engine Control System Glossary FMI (Failure Mode Identifier) American Trucking Association Numbers and names used to identify how a system or part failed. ATDC (After Top Dead Center) Description The 180 of crankshaft rotation after the piston reaches top center (normal direction of rotation).
  • Page 11 VEB (Volvo Engine Brake) Society of Automotive Engineers. Consists of a compression brake (VCB) and an exhaust pressure governor (EPG).

  • Page 12: Specifications

    Group 28 Specifications Specifications Description of Signals EECU (D7C) and Breakout Box Connected in Series Between EECU and Wiring Harness • For the measurements below, the following applies: The EECU connected. • Breakout box J-41132 connected between connec- • Ignition key in ON position. tor EA or EB and the EECU.
  • Page 13 Group 28 Specifications Connec- Signal type Measuring points Ignition key in the ON position Other tion EA10 Rack drive PWM, - EA11 Not currently used EA12 Not currently used EA13 Fuel temperature sensor, signal EA13 - EA5 3.0 V (+20 C/68 2.0 V (+40 C/104...
  • Page 14 Group 28 Specifications Connec- Signal type Measuring points Ignition key in the ON position Other tion Coolant level sensor, signal EB7 - EB8 80% B+ (open) Applies to WX and 0 V (closed) VN. Normally open with the ignition key in the ON position.
  • Page 15 Group 28 Specifications EECU, D7C, with Breakout Box Connected to Wiring Harness Only For the measurements below, the following applies: • Breakout box J-41132 connected to connector EA or • The EECU is not connected. • Ignition key must be in the OFF position. •...
  • Page 16 Group 28 Specifications Connec- Signal type Measuring points Ignition key in the OFF position Other tion EA20 Not currently used EA21 Timing sleeve PWM, - EA21 / alternate open circuit (see also EA9) ground EA22 Not currently used EA23 Not currently used EA24 Not currently used EA25...
  • Page 17 Group 28 Specifications Connec- Signal type Measuring points Ignition key in the OFF position Other tion EB25 / (connection <1 A in 6 pin diagnos- tics connector) EB25 SAE J1587/J1708 A Information link EB25 / (connection <1 F in 9 pin diagnos- tics connector) EB26 SAE J1587/J1708 B Information link...

  • Page 18: Eecu And Wiring Harness

    Group 28 Specifications EECU (D12B and D12C), Breakout Box Connected in Series Between EECU and Wiring Harness For the measurements below, the following applies: • Breakout box J-41132 connected between connec- tor EA or EB and the EECU. • Jumper harness J43233 connected between con- nector EA or EB and the EECU.
  • Page 19 Group 28 Specifications Connec- Signal type Measuring points Ignition key in the ON position Other tion EA16 Not currently used EA17 Not currently used EA18 Engine position sensor (cam), - EA19 Not currently used EA20 Not currently used EA21 Not currently used EA22 Unit injector cylinder 2, - EA23...
  • Page 20 Group 28 Specifications Connec- Signal type Measuring points Ignition key in the ON position Other tion EB11 EECU B+ EB11 / EB9 EB12 EECU B+ EB12 / EB10 EB13 Ambient air temperature sensor EB14 Not currently used EB15 Not currently used EB16 Pre-heat sensor 2 (if equipped) EB16 / EB9...

  • Page 21: Eecu (D12B And D12C), Breakout Box Connected To Wiring Harness Only

    Group 28 Specifications EECU (D12B and D12C), Breakout Box Connected to Wiring Harness Only For the measurements below, the following applies: • Breakout box J-41132 connected to connector EA or • The EECU not connected. • Ignition key must be in the OFF position. •...
  • Page 22 Group 28 Specifications Connec- Signal type Measuring points Ignition key in the OFF position Other tion EA21 Not currently used EA22 Unit injector cylinder 2, - EA22 / EA12 1.5 - 2.0 EA23 Unit injector cylinder 3, - EA23 / EA12 1.5 - 2.0 EA24 Unit injector cylinder 4, 5, 6 (90...
  • Page 23 Group 28 Specifications Connec- Signal type Measuring points Ignition key in the OFF position Other tion EB20 Not currently used EB21 Engine fan control (if equipped with on/off fan) EB22 Not currently used EB23 Not currently used EB24 EOL Enable EB24/EB9 Open circuit(open) EB25 / (connection...

  • Page 24: Pinouts

    Group 28 Specifications Pinouts Engine Electronic Control Unit (EECU) VOLVO D12B/D12C EECU/EA Connector Cavity Color Description OIL TEMPERATURE BL/W BOOST TEMPERATURE BOOST PRESSURE GN/W BOOST & OIL PRESSURE COMMON (+) W3000945 BN/W PRESSURE & TEMP. SENSOR COMMON NOT USED ENGINE POSITION SENSOR, CAM (+)
  • Page 25 Group 28 Specifications VOLVO D12B/D12C EECU/EB Connector Cavity Color Description DATA LINK J1939 CAN HI DATA LINK J1939 CAN LO BL/Y AMBIENT AIR TEMPERATURE W3000945 BUFFERED IDLE VALIDATION SWITCH PREHEAT SENSE 1 NOT USED BL/SB COOLANT LEVEL WARNING GR/W AIR FILTER, COOL LVL COMMON...
  • Page 26 Group 28 Specifications VOLVO D7C EECU/EA Connector Cavity Color Description OIL TEMPERATURE BL/W BOOST TEMPERATURE W3000945 BOOST PRESSURE GN/W BOOST, OIL & FUEL PRESSURE COMMON (+) PRESSURE & TEMP. SENSOR COMMON BN/W NOT USED REDUNDANT ENGINE SPEED SENSOR (+) RACK DRIVE, PWM (+)
  • Page 27 Group 28 Specifications VOLVO D7C EECU/EB Connector Cavity Color Description DATA LINK J1939 CAN HI DATA LINK J1939 CAN LO BL/Y AMBIENT AIR TEMPERATURE W3000945 BUFFERED IDLE VALIDATION SWITCH PREHEAT SENSE 1 NOT USED BL/SB COOLANT LEVEL WARNING GR/W AIR FILTER, COOL LEVEL COM-...

  • Page 28: Pinouts

    Group 28 Specifications Pinouts Vehicle Electronic Control Unit(VECU) Vehicle ECU Connector A-(GREEN) Cavity Circuit Description 564A CC/PTO SWITCH SET(-) INPUT 563A CC/PTO SWITCH SET(+) INPUT 562A CC/PTO SWITCH ON INPUT W3002689 NOT USED 567B SERVICE BRAKE SWITCH INPUT 284-A 12V STARTER CONTROL SOLE- NOID FEED ENGINE PREHEAT CIRCUIT PRO- TECTION FEED...
  • Page 29 Group 28 Specifications Vehicle ECU Connector B-(BLUE) Cavity Circuit Description NOT USED 312A TRANSMISSION AREA INHIBITOR VALVE RETURN W3002689 NOT USED ECU COMMON 12V OUTPUT VEHICLE SPEED INPUT NOT USED THROTTLE POSITION SENSOR IN- NOT USED THROTTLE POSITION SENSOR SUPPLY PARKING BRAKE SWITCH INPUT 12-14 NOT USED...

  • Page 30: Schematic

    Group 28 Specifications Schematic D12B W2002827...

  • Page 31: Schematic

    Group 28 Specifications Schematic D12C W2003348...

  • Page 32: Schematic

    Group 28 Specifications Schematic W2002826...

  • Page 33: Schematic

    Group 28 Specifications Schematic VECU W3003497...

  • Page 35: Tools

    Special Tools The following special tools are required for work with the D12 electronic control sys- tem. The 3917916 VOLVO breakout kit, along with its components, is available from Volvo Truck. When requesting tools, provide the appropriate part number. Part num- bers beginning with ”J”...
  • Page 36 Group 28 Tools 9998534 4–pin breakout harness 9809687 AC/DC power supply for PC toll.(optional) J-39200 digital multimeter 9809678 12 Pin DIN Connector cable-alternative J-43147 2–pin breakout harness programming cable for EECU 9998482 Guage for inspection of control unit con- 9809685 Power extension cable —used together nector w/9808635.

  • Page 37: Other Special Equipment

    The following hardware is used to operate VCADS Pro. The tools can be ordered from Volvo quoting the specified part number. VCADS Pro tools for diagnostics is for vehicles built from 1998 and later. For diagnos- tics on vehicles built prior to 1998, use Pro-Link 9000 (J-38500) with Volvo Application Cartridge J-38500–2000. W2003597...
  • Page 38 PC tool -package. Didgipass password generator, model 300 or 500. Laser printer; HP 1100A (To be purchased from a local supplier. Not supplied by Volvo.) 9998574 Laser printer labels. Used when printing labels for the engine electronic control unit (EECU).

  • Page 39: Design And Function

    Group 28 Design and Function Design and Function Vehicle Management System Strategy The vehicle management system is designed to incorpo- rate the entire vehicle system and instantly receive ⇔ real-time data from key vehicle components. Vehicle Production • Uniform interfaces between the control systems. Communication •...

  • Page 40: Data Link System

    Here is how the system works on a vehicle equipped with a Volvo engine: when the driver wants to increase the vehicle’s speed, a signal is sent from the accelerator position sensor to the vehicle electronic control unit...

  • Page 41: Data Links, Design And Function

    Group 28 Design and Function Data Links, Design and Function Data links are one way of transferring information be- tween various components. In conventional systems, analog signals have mostly been used. Analog signals mean that different voltage levels repre- sent different values. A simplified example of analog signals could be: 1 volt = 10 2 volts = 20...
  • Page 42 Group 28 Design and Function Messages and Information Content Different voltage levels are represented by the different numbers in the binary number system. The binary num- ber system has only two numbers, one and zero. The ones are normally represented by a high voltage and the zeros by a low voltage.
  • Page 43 Group 28 Design and Function W2003293 Message 144–091–000–240 in this example, has the following meaning: MID 144 — The message comes from the Vehicle ECU. PID 091 — The message states the accelerator pedal position percentage. Data 000 — The accelerator pedal is in the completely released position. 000 is a data component, which in this case states how much the accelerator pedal has been pressed down.
  • Page 44 (ECU’s) self-diagnostic program. In addition to the industry-standard SAE codes, Volvo has developed a list of diagnostic messages that are unique to Volvo applications. Generally, diagnostic messages and their descriptions are listed in the service manual for each respective ECU and in the user manual for di- agnostic tools.
  • Page 45 Group 28 Design and Function Data Link Communication General Communication Communication between the different ECUs takes place Equipment via the two data links: the J1939 control data link and (Expansion the J1587/1708 information data link. capability) The diagram shows how the control units, the diagnostic connector, and the instrument cluster are connected in principle.
  • Page 46 Group 28 Design and Function SAE J1939 Control Data Link The system’s control signals are sent via this link. The J1939 link is very fast, operating at 250,000 bits per second. This operating speed allows the system to func- tion more effectively and adapt quickly to changing conditions and vehicle requirements.
  • Page 47 Terminating resistors are wired into each end of the J1939 data link. One is located near the ABS ECU and the other near the engine ECU. On Volvo engines, the terminating resistor at the engine ECU end is located in- SRS ECU side the EECU.
  • Page 48 Group 28 Design and Function SAE J1587/1708 Information Data Link Communication Information and diagnostic signals are sent via this Equipment link. The link also functions as a “backup” should the (Expansion J1939 control data link fail to function for any reason. capability) SAE J1708 is a standard that specifies hardware and a databus speed of 9600 bits per second.

  • Page 49: Diagnostic Connector

    Group 28 Design and Function Diagnostic Connector Communication Equipment (Expansion capability) Instrument Cluster MIDs 234 & 140 SRS ECU MID 232 Engine ECU Terminating MID 128 Resistor W8001310 Diagnostic The diagnostic connector is a round Deutsch connector connector located in the driver’s side kick panel. The diagnostic connector is connected to the J1587/1708 information Vehicle ECU link and gives the system a way to communicate with an...

  • Page 50: Communication Equipment

    Provisions are made for adding aftermarket communica- tion devices to the J1587/1708 link via connectors in the wiring harness. Some of the communication devices currently used in Volvo trucks include Road Relay, Pro-Driver, Qualcomm and Highway Master.

  • Page 51: Instrument Cluster

    Group 28 Design and Function Instrument Cluster W3003621 The instrument cluster used on Volvo vehicles uses both data link signals and hardwired sensors depending on Communication the vehicle/engine variant and instrument configuration. Equipment (Expansion A graphic display screen is integrated into the instrument...

  • Page 52: Vehicle Electronic Control Unit (Vecu)

    ECUs in the system (primarily to the engine ECU). For detailed information about the VECU see Vehicle Instrument Cluster Electronic Control Unit, MID 144, Volvo service publica- MIDs 234 & 140 tion number PV776–300–610. The VECU is only used in vehicles equipped with Volvo engines.

  • Page 53: Engine Electronic Control Unit

    Group 28 Design and Function Engine Electronic Control Unit W2003294 Irrespective of engine variant, the engine electronic con- trol unit (EECU) performs the same basic functions in Communication the system: control of engine operation. The EECU re- Equipment ceives signals from various sensors and the data links. (Expansion Based on these signals and the parameters programmed capability)
  • Page 54 Group 28 Design and Function EECU The EECU is an electronic control unit that monitors cer- tain operational parameters of the Volvo engine from the SAE J1587 Data Link and appropriate sensors. W2003076...
  • Page 55 ECU programming. The temperature which activates this warning varies for different engines. This temperature is set in the engine ECU. For Volvo en- gines, it is 275 F (135 Note: If the engine is running and the stop lamp comes on you will get a buzzer or warning signal.
  • Page 56 Group 28 Design and Function Electronic Unit Injectors The engine has six unit injectors, one for each cylinder. Each Electronic Unit Injector, or EUI, is a combination of injection pump and injector, but operates at a consid- erably higher pressure than a standard injector. Each unit injector is mounted vertically in the cylinder head at each cylinder, centered between the four valves.
  • Page 57 Group 28 Design and Function Cam Sensor Wheel The cam sensor wheel has six teeth (one tooth for each unit injector) evenly spaced at 60 center-to-center, plus an extra tooth, placed 15 before the tooth that indicates cylinder number 1. The EECU uses these teeth to determine which injector is in line for injection.
  • Page 58 Group 28 Design and Function Injector Operational Phases The operational phase of the number 1 cylinder is given in the following example. Fuel is injected at 7 before top dead center (BTDC) (the injection angle may vary be- tween 18 BTDC and 6 after top dead center).
  • Page 59 Group 28 Design and Function From the first notch after a flat area, the EECU ad- vances the angle from which it is to begin injecting fuel into the cylinder and on to the angle where it is to stop injecting fuel into the cylinder.
  • Page 60 Group 28 Design and Function Other Functions The EECU guides the EUIs based on the following ”con- trol functions.” Smoke limitation — To prevent injecting too much fuel into the cylinder, the EECU checks: • Boost pressure • Engine speed •...
  • Page 61 Group 28 Design and Function Engine protection — To a certain extent, the EECU can also protect the engine by: • Reducing engine speed at low coolant temperatures (cold engine cranking): When coolant temperature is lower than 50 C (122 F), engine speed is limited during a specific time to 1000 rpm immediately after starting.
  • Page 62 Group 28 Design and Function Idle shutdown — This function is available as an option. It switches off the engine after it has run at idling speed for a specific time. This time can be set to between 1 and 40 minutes. The engine will be switched off if the fol- lowing conditions are met: •...
  • Page 63 first calculations on injection angles and fuel quantities. This time is equivalent to two engine rev- olutions. VEB (VOLVO engine brake) The VEB consists of an exhaust brake and a compres- sion brake. The EECU activates the VEB when the following conditions are satisfied:...
  • Page 64 Group 28 Design and Function Idle Speed Adjustment Note: This service information should be considered supplemental to the Engine Control information for base D12 B and C engine. The idle speed is adjusted on the VN vehicles at the turn signal stalk.

  • Page 65: Abs Brake System Ecu

    Group 28 Design and Function ABS Brake System ECU W5000669 The ABS ECU continuously monitors wheel speed and helps to control braking in exterme situations. It also Communication Equipment helps prevent wheel spin in vehicles equipped with trac- (Expansion tion control systems (ATC or TCS). capability) The ABS ECU is connected to the J1939 control data link and the J1587/1708 information data link.

  • Page 66: Srs Airbag Ecu

    The SRS ECU is connected to the J1587/1708 informa- tion data link. For detailed information about the SRS see Supplemental Restraint System (SRS), VNL, VNM, Instrument Cluster Volvo service publication number PV776–TSP21771/1. MIDs 234 & 140 Note: The SRS system is not available on all models. SRS ECU...

  • Page 67: Transmission Ecu

    Group 28 Design and Function Transmission ECU W4001493 The transmission electronic control unit (ECU) receives signals directly from switches and sensors and via the Communication data links. Based on those inputs, the transmission ECU Equipment (Expansion controls transmission operation via solenoid valves and switches.

  • Page 68: Breakout Boxes And Harnesses

    Group 28 Design and Function Breakout Boxes and Harnesses The harness adapters are used to gain access to the EECU, the VECU, the throttle pedal and certain other sensors on the engine, while the circuit is intact. This al- lows the technician and vehicle to take measurements on functional circuits.

  • Page 69: Vecu Overview

    Replacement VECUs are programmed using the VCADS Pro tool. Programming is based on the particular dataset that matches the vehicle; datasets are stored in the Volvo Data Administration (VDA) database. Authorized technicians can update and/or alter software datasets, change customer parameters, and perform campaigns.

  • Page 70: Vecu Functions

    Group 28 Design and Function VECU Functions The following functions are monitored or controlled by the VECU. Only the functions needed for each specific vehicle/engine application are wired and programmed into the VECU. Accelerator Pedal The accelerator pedal signals travel first to the VECU and are transferred to the Engine Electronic Control Unit (EECU) via the J1939 Control Link.
  • Page 71 ABS ECU, the VECU can de-activate the engine brake. Windshield Wipers Windshield wiper function on the VN and VHD (with Volvo engine) is controlled by the VECU using signals received from the wiper switch. Calibration Number The calibration number (K factor) is a measurement of “Drivetrain Constant Pulses per Mile”...
  • Page 72 Group 28 Design and Function Optional Engine Speed Limit Optional engine speed limit is the maximum speed at which the engine can be operated with the vehicle at zero road speed and the PTO mode engaged. Optional engine speed limit parameters can be programmed with the VCADS Pro tool.
  • Page 73 Group 28 Design and Function Safety Warnings/Cautions • Always wear approved eye protection. • To avoid personal injury and damage to the vehicle, always refer to and follow the vehicle manufacturer’s WARNINGS, CAUTIONS, and service procedures. • Unless otherwise directed, turn the ignition switch OFF before disconnecting or connecting any electri- cal components.
  • Page 74 • Selection of default application. • Update the system. Get a new program version of VCADS Pro from Volvo via connection to the central systems. • User administration. Select the user to change the password for. This function requires authorization and is not available to all users.

  • Page 75: Sensor Locations

    Group 28 Design and Function Sensor Locations VN/VHD Sensors and Switches W2003551 Inside cab Throttle position sensor Microswitch(service brake) Engine/Exhaust Brake VECU Pressure Switch-Parking and Service Brake ON/OFF—Resume Switch Resume Switch Diagnostic connector...
  • Page 76 Group 28 Design and Function EECU connector EA/EB EPG solenoid Boost pressure/temperature sensor Oil pressure/temperature sensor Engine timing (crank) sensor Engine electronic control unit (EECU) W2002748 Needle lift sensor (at injector #1) Coolant temperature sensor Redundant engine speed sensor (1); Fuel pres- sure/temperature sensor (2);...
  • Page 77 Group 28 Design and Function D12B Boost pressure/temperature sensor Coolant temperature sensor Oil pressure/temperature sensor Engine timing (crank) sensor Engine electronic control unit (EECU) EECU connector EA/EB Engine position (cam) sensor W2002745 Compression brake, VCB (under valve cover) EPG control (PWM box) W2002746...
  • Page 78 Group 28 Design and Function D12C W2003550 Fig. 10: Engine electronic control unit (EECU) sensor locations D12C Several engine sensors send signals to the EECU. They Crank Sensor (flywheel housing) — This sensor are: detects the crank-shafts’s position and speed, via teeth in the flywheel.

  • Page 79: Control Unit Locations

    Control Unit Locations VN/VHD: Cab and Engine Compartment The diagram shows the normal location of the different control units on a VN vehicle equipped with a Volvo en- gine. Control units may vary slightly in location, depending on vehicle and component type (variant). The locations are virtually the same on a VHD vehicle.
  • Page 80 Group 28 Design and Function WG/AC: Cab and Engine Compartment The diagram shows the normal location of the different control units on WG and AC vehicles. Control units may vary slightly in location, depending on vehicle type (variant). W3003963 ABS control unit, on right side frame rail Vehicle electronic control unit (VECU) Instrument cluster Engine electronic control unit (EECU)
  • Page 81 Group 28 Design and Function WX/WXLL: Cab and Engine Compartment The diagram shows the normal location of the different control units on a WX or WXLL vehicle. Control units may vary slightly in location, depending on vehicle type (variant). W3003961 Vehicle electronic control unit (VECU), location in ABS control unit, right side engine tunnel WX narrow cab only...
  • Page 82 Group 28 Design and Function WXR: Cab and Engine Compartment The diagram shows the normal location of the different control units on a WXR vehicle. Control units may vary slightly in location, depending on vehicle type (variant). W3003962 Engine electronic control unit (EECU) Transmission ECU Instrument cluster Vehicle electronic control unit (VECU) —...

  • Page 83: Fuses And Relays

    Group 28 Design and Function Fuses and Relays W8000923 The VN/VHD vehicles have easy access to the TEC panel. Fuses and relays are easily identified by referring to the decals inside the TEC covers. W3004398...
  • Page 84 Group 28 Design and Function Note: Refer to the decal inside the TEC cover for vehi- cle’s exact fuse descriptions and ratings. W3002729 Fig. 11: Fuse and Relay Positions (in the top TEC panel, VN) B1–1 through B1–6 Ignition Expansion Blocks B2–2 through B2–4 Battery Expansion Blocks Accessory Power Relay...
  • Page 85 Group 28 Design and Function Note: Refer to the decal inside the TEC cover for vehi- cle’s exact fuse descriptions and ratings. W3004362 Fig. 12: Fuse and Relay Positions (in the top TEC panel, VHD) B1–1 through B1–6 Battery and Ignition Expansion Block Accessory Power Relay PR2, PR3, PR4, R24 Ignition Power Relays...

  • Page 87: Troubleshooting

    Group 28 Troubleshooting Troubleshooting Fault Code Troubleshooting Message and Parameter De- scriptions MID’s Description (message ID’s) EECU (Engine Electronic Control Unit) SRS (Supplemental Restraint System) ABS (Antilock Braking System Instrument Cluster Center Module Instrument Cluster Left Module VECU (Vehicle Electronic Control Unit) TECU (Transmission Electronic Control Unit) PID’s Description...
  • Page 88 Group 28 Troubleshooting PPID’s Description (Proprietary Parameter ID’s) Buffered idle switch Pedal switches, supply Cruise control and retarder, supply switch Accelerator pedal and retarder, supply sensors Accelerator control 2 and primary tank, supply sensors Range inhibitor, status solenoid valve Compressor, status solenoid valve Interval wiper, status relay Area inhibitor, status solenoid valve Engine brake torque percent...

  • Page 89: Fmi Table

    Group 28 Troubleshooting FMI Table SAE Standard FMI value SAE Text Data Valid, but above normal operating range. Data Valid, but under normal operating range. Intermittent or incorrect data. Abnormally high voltage. Abnormally low voltage. Abnormally low current or open circuit. Abnormally high current or chort circuit.

  • Page 90: Reading/Clearing Fault Codes

    Reading/Clearing Fault Codes Fault codes can be read and cleared using the VCADS Pro tool or the Pro-Link tool with Volvo application car- tridge. See the appropriate service information for details on reading and clearing fault codes using VCADS Pro or Pro-Link tools.
  • Page 91 Group 28 Troubleshooting Measurement at the Component’s Connector, to the VECU In this procedure, the component is disconnected and measurements are made at specific pin locations on the wiring harness end of the connector. Measurements usually involve supply, ground, and signal wire connec- tions through the wiring harness and VECU.
  • Page 92 Group 28 Troubleshooting Check of the Subsystem In this procedure, the VECU is disconnected, a breakout box is connected between the VECU and wiring harness, and measurements are made at specific pin locations on the breakout box. This check is made to measure the voltage that is present at the VECU with the circuit intact.

  • Page 93: Mid 128 Eecu

    Group 28 Troubleshooting MID 128 EECU MID 128 Fault Code Table MID:Message Identification Description. SID:Subsystem Identification Description. PID:Parameter Identification Description. FMI:Failure Mode Identifier. Error code Component/Function Section MID 128-PID 45 Preheater Status 3, 4, 5 “MID 128 PID 45 Pre- heater Status”...
  • Page 94 Group 28 Troubleshooting Error code Component/Function Section MID 128–PID 175 Engine Oil Temperature 0, 3, 4 “MID 128 PID 175 En- gine Oil Temperature” page 140 MID 128–PID 228 Road Speed Sensor Calibra- “MID 128 PID 228 tion Road Speed Sensor Calibration”...
  • Page 95 Group 28 Troubleshooting Error code Component/Function Section MID 128–SID 71 Preheater Element 2 (D12B 3, 4, 5 “MID 128 SID 71 Pre- only) heater Element 2” page MID 128–SID 230 Idle Validation Switch 1 3, 4 “MID 128 SID 230 Idle Validation Switch 1”...
  • Page 96 Group 28 Troubleshooting...

  • Page 97: Mid 128 Pid 45 Preheater Status

    Group 28 Troubleshooting MID 128 PID 45 Preheater Status The preheat relay is provided battery voltage at all times through the supply wire. If the EECU requests preheat operation (based on engine temperature), the control wire will be grounded through the EECU. Preheating is standard on the D7C engine with one preheat relay/element.

  • Page 98: Mid 128 Pid 45 Preheater Status, Check

    Group 28 Troubleshooting MID 128 PID 45 Preheater Sta- Check of component tus, Check Preheating relay Special tools: J-43233, J-39200, J-41132 Disconnect the control and supply J-39200 NOTE! wires to the preheat relay. Check all the particular connectors for loose connec- Ignition key must be in the OFF posi- tions, switch resistance, and oxidation.

  • Page 99: Mid 128 Pid 49 Abs Control Status

    Group 28 Troubleshooting MID 128 PID 49 ABS Control Status Applies only to vehicles with ABS. Fault Codes FMI 9 Status message from the ABS control unit is not avail- able (SAE J1587 message). Conditions for fault code: • PID 49 — the message is unavailable or is not be- ing updated regularly.

  • Page 100: Mid 128 Pid 49 Abs Control Status, Check

    Group 28 Troubleshooting MID 128 PID 49 ABS Control Status, Check Special tools: J-43233, J-39200, J-41132 NOTE! Check all the particular connectors for loose connections as well as for switch resistance and oxidation. For detailed circuit information, refer to “VNL, VNM Elec- trical Schematics,”...

  • Page 101: Mid 128 Pid 84 Road Speed

    Group 28 Troubleshooting MID 128 PID 84 Road Speed Fault Codes FMI 9 Vehicle road speed signal not available (SAE J1587 message). Conditions for fault code: • PID 84 — the message is unavailable or is not be- ing updated regularly. Possible cause: •...

  • Page 102: Mid 128 Pid 84 Road Speed, Check

    Group 28 Troubleshooting MID 128 PID 84 Road Speed, Check Special tools: J-43233, J-39200, J-41132 NOTE! Check all the particular connectors for loose connections as well as for switch resistance and oxidation. For detailed circuit information, refer to “VNL, VNM Elec- trical Schematics,”...

  • Page 103: Mid 128 Pid 85 Cruise Control Status

    Group 28 Troubleshooting MID 128 PID 85 Cruise Control Status Fault Codes FMI 9 Status message from Cruise Control is not available (SAE J1587 message). Conditions for fault code: • PID 85 — the message is unavailable or not being updated regularly.

  • Page 104: Mid 128 Pid 85 Cruise Control Status, Check

    Group 28 Troubleshooting MID 128 PID 85 Cruise Control Status, Check Special tools: J-43233, J-39200, J-41132 NOTE! Check all the particular connectors for loose connections as well as for switch resistance and oxidation. For detailed circuit information, refer to “VNL, VNM Elec- trical Schematics,”...

  • Page 105: Mid 128 Pid 91 Accelerator Pedal Position

    Group 28 Troubleshooting MID 128 PID 91 Accelerator Pedal Position Fault Codes FMI 9 the “Limp home mode.” Accelerator pedal message not available. (SAE J1587 Noticeable external symptom: message) • Yellow lamp lights up. Conditions for fault code: • If FMI 9 has also been set, the engine will be put in •...

  • Page 106: Mid 128 Pid 91 Accelerator Pedal Position, Check

    Group 28 Troubleshooting MID 128 PID 91 Accelerator Pedal Position, Check Special tools: J-43233, J-39200, J-41132 NOTE! Check all the particular connectors for loose connections as well as for switch resistance and oxidation. For detailed circuit information, refer to “VNL, VNM Elec- trical Schematics,”...

  • Page 107: Mid 128 Pid 94 Fuel Delivery Pressure

    Group 28 Troubleshooting MID 128 PID 94 Fuel Delivery Pressure D7C and D12C In addition to the fuel pressure, the sensor also measures the fuel temperature. Fault Codes FMI 1 • Short circuit to voltage, signal wire. Pressure too low. •...

  • Page 108: Mid 128 Pid 94 Fuel Delivery Pressure, Check

    Group 28 Troubleshooting MID 128 PID 94 Fuel Delivery Signal wire: Pressure, Check Measure the resistance with ohmme- J-39200 D7C and D12C ter J-39200. Special tools: J-43233, J-39200, J-41132, Ignition key must be in the OFF posi- 9998534 tion. Measuring Optimal value NOTE! points...
  • Page 109 Group 28 Troubleshooting Check of Subsystem Fuel Pressure Ignition key must be in the ON posi- J-41132 tion. J-43233 Connect breakout box J-41132 in se- J-39200 ries between connector EA and the EECU. Connect jumper harness J- 43233 in series between connector EB and the EECU.
  • Page 110 Group 28 Troubleshooting Fuel Pressure Sensor, Pres- sure/Voltage Chart W2002799...

  • Page 111: Mid 128 Pid 100 Engine Oil Pressure

    Group 28 Troubleshooting MID 128 PID 100 Engine Oil Pressure In addition to the oil pressure, the sensor also measures the oil temperature. Fault Codes FMI 1 • Fault in sensor. Pressure too low. Reaction from the EECU: Conditions for fault code: •...

  • Page 112: Mid 128 Pid 100 Engine Oil Pressure, Check

    Group 28 Troubleshooting MID 128 PID 100 Engine Oil Signal wire: Pressure, Check Measure the resistance with ohmme- J-39200 Special tools: J-43233, J-39200, J-41132, ter J-39200. 9998534 Ignition key must be in the OFF posi- NOTE! tion. Check all the particular connectors for loose connections Measuring Optimal value as well as for switch resistance and oxidation.
  • Page 113 Group 28 Troubleshooting Check of Subsystem Oil pressure Ignition key must be in the ON posi- J-41132 tion. J-43233 Connect breakout box J-41132 in se- J-39200 ries between connector EA and the EECU. Connect jumper harness J- 43233 in series between connector EB and the EECU.
  • Page 114 Group 28 Troubleshooting Oil Pressure Sensor, Pres- sure/Voltage Chart W2002732...

  • Page 115: Mid 128 Pid 102 Boost Pressure

    Group 28 Troubleshooting MID 128 PID 102 Boost Pressure In addition to the boost pressure, the sensor also measures the boost air temperature. Fault Codes FMI 3 Short circuit to voltage. Conditions for fault code: • The voltage on EA3 exceeds 4.95 V. Possible cause: •...

  • Page 116: Mid 128 Pid 102 Boost Pressure, Check

    Group 28 Troubleshooting MID 128 PID 102 Boost Pres- Signal wire: sure, Check Special tools: J-43233, J-39200, J-41132, Measure the resistance with ohmme- J-39200 9998534 ter J-39200. Ignition key must be in the OFF posi- NOTE! tion. Check all the particular connectors for loose connections Measuring Optimal value as well as for switch resistance and oxidation.

  • Page 117: Boost Pressure

    Group 28 Troubleshooting Check of Subsystem Boost pressure Ignition key must be in the ON posi- J-41132 tion. J-43233 Connect breakout box J-41132 in se- J-39200 ries between connector EA and the EECU. Connect jumper harness J- 43233 in series between connector EB and the EECU.
  • Page 118 Group 28 Troubleshooting Boost Pressure Sensor, Pres- sure/Voltage Chart W2002730...

  • Page 119: Mid 128 Pid 105 Boost Air Temperature

    Group 28 Troubleshooting MID 128 PID 105 Boost Air Temperature In addition to the boost air temperature, the sensor also measures the boost pressure. The boost air temperature signal can be used to switch on the radiator fan. Fault Codes FMI 3 Short circuit to voltage or open circuit.

  • Page 120: Mid 128 Pid 105 Boost Air Temperature, Check

    Group 28 Troubleshooting MID 128 PID 105 Boost Air Signal wire: Temperature, Check Measure the resistance with ohmme- J-39200 Special tools: J-43233, J-39200, J-41132, ter J-39200. 9998534 Ignition key must be in the OFF posi- NOTE! tion. Check all the particular connectors for loose connections Measuring Optimal value as well as for switch resistance and oxidation.
  • Page 121 Group 28 Troubleshooting Check of Subsystem Boost air temperature Ignition key must be in the ON posi- J-41132 tion. J-43233 J- Connect breakout box J-41132 in se- 39200 ries between connector EA and the EECU. Connect jumper harness J- 43233 in series between connector EB and the EECU.
  • Page 122 Group 28 Troubleshooting Boost Air Temperature Sensor, Temperature/Resistance Chart W2002728...

  • Page 123: Mid 128 Pid 107 Air Filter Differential Pressure

    Group 28 Troubleshooting MID 128 PID 107 Air Filter Differential Pressure (D12B, D12C, D7C Engines) W2003315 Fault Codes FMI 0 • Yellow lamp is requested. Filter restriction is too great. Noticeable external symptom: The pressure drop (filter restriction) is greatest at high •...

  • Page 124: Mid 128 Pid 107 Air Filter Differential Pressure, Check

    Group 28 Troubleshooting FMI 4 Short circuit to ground. Conditions for fault code: • Voltage between EB17–EB8 is under 1.1 V. Possible cause: • Short circuit to ground, signal wire. • Fault in sensor. Reaction from the EECU: • Fault code is set. •...
  • Page 125 Group 28 Troubleshooting MID 128 PID 107 Air Filter Dif- Check of Component Note: Faults in the component can be caused by faults ferential Pressure, Check in the wiring harness of the EECU. Thus, a check of the (D12B, D12C, D7C Engines) wiring harness should also be made before connecting a Special tools: 9998534, J-39200, J-43233, J- new component.

  • Page 126: Mid 128 Pid 108 Atmospheric Pressure

    Group 28 Troubleshooting MID 128 PID 108 Atmospheric Pressure The sensor is located inside the EECU and therefore cannot be checked. The signal is used to calculate the turbo pressure and to compensate the fuel when driving at high altitudes. Fault Codes FMI 3 Short circuit to voltage.

  • Page 127: Mid 128 Pid 110 Engine Coolant Temperature

    Group 28 Troubleshooting MID 128 PID 110 Engine Coolant Temperature Fault Codes FMI 0 Reaction from the EECU: Temperature too high. • Fault code is set. Conditions for fault code: • Yellow lamp is requested. • The coolant temperature exceeds 102 C/216 •...

  • Page 128: Mid 128 Pid 110 Engine Coolant Temperature, Check

    Group 28 Troubleshooting MID 128 PID 110 Engine Check of component Coolant Temperature, Check Coolant temperature sensor Special tools: J-43233, J-39200, J-41132, 9998534 Disconnect the connector to the 9998534 coolant temperature sensor. Install J-39200 NOTE! breakout harness 9998534 to the sen- sor harness only.
  • Page 129 Group 28 Troubleshooting Coolant Temperature Sensor, Tem- perature/Resistance Chart W2002729...

  • Page 130: Mid 128 Pid 111 Coolant Level

    Group 28 Troubleshooting MID 128 PID 111 Coolant Level The information applies only to the magnetic coolant level sensor that is mounted in the bottom of the radiator expansion tank. Some models (WG, AC) are equipped with a capacitive probe and an electronic coolant level module that converts the capacitive signal to an output signal that the EECU can understand.

  • Page 131: Mid 128 Pid 111 Coolant Level, Check

    Group 28 Troubleshooting MID 128 PID 111 Coolant Level, Check of component Check The coolant level sensor Special tools: J-43233, J-39200, J-41132, J- 42472 Disconnect the connector to the J-39200 coolant level sensor. Install breakout J-42472 NOTE! harness J-42472 to the sensor har- Check all the particular connectors for loose connections ness end only.

  • Page 132: Mid 128 Pid 158 Battery Voltage

    Group 28 Troubleshooting MID 128 PID 158 Battery Voltage Fault Codes FMI 3 Battery voltage too high. Conditions for fault code: • The battery voltage exceeds 36 V. Possible cause: • Fault in alternator. • Fast charger connected. Reaction from the EECU: •...

  • Page 133: Mid 128 Pid 158 Battery Voltage, Check

    Group 28 Troubleshooting MID 128 PID 158 Battery Volt- age, Check Special tools: J-43233, J-39200, J-41132 NOTE! Check all the particular connectors for loose connections as well as for switch resistance and oxidation. For detailed circuit information, refer to “VNL, VNM Elec- trical Schematics,”...

  • Page 134: Mid 128 Pid 172 Air Inlet Temperature

    Group 28 Troubleshooting MID 128 PID 172 Air Inlet Temperature An ambient air temperature sensor is mounted in the piping between the air filter and the turbo inlet. In addition to ambient air temperature, the sensor also measures air fil- ter restriction.

  • Page 135: Mid 128 Pid 172 Air Inlet Temperature, Check

    Group 28 Troubleshooting MID 128 PID 172 Air Inlet Tem- Check of component perature, Check Air temperature sensor Special tools: J-43233, J-39200, J-41132, 9998534 Disconnect the connector to the ambi- 9998534 ent air temperature sensor. Install J-39200 NOTE! breakout harness 9998534 to the sen- Check all the particular connectors for loose connections sor harness end only.
  • Page 136 Group 28 Troubleshooting Ambient Air Temperature Sensor, Temperature/Resistance Chart W2002733...

  • Page 137: Mid 128 Pid 174 Fuel Temperature

    Group 28 Troubleshooting MID 128 PID 174 Fuel Temperature D7C and D12C In addition to the fuel temperature, the sensor also measures the fuel pressure. The signal is used for fuel density compensation. Fault Codes FMI 3 Short circuit to voltage or open circuit. Conditions for fault code: •...

  • Page 138: Mid 128 Pid 174 Fuel Temperature, Check

    Group 28 Troubleshooting MID 128 PID 174 Fuel Tempera- Signal wire: ture, Check Measure the resistance with ohmme- J-39200 Special tools: J-43233, J-39200, J-41132, ter J-39200. 9998534 Ignition key must be in the OFF posi- D7C and D12C tion. Note: Check all the particular connectors for loose con- Measuring Optimal value nections as well as for switch resistance and oxidation.

  • Page 139: Fuel Temperature (D7C And D12C Only)

    Group 28 Troubleshooting Check of Subsystem Fuel temperature Ignition key must be in the ON posi- J-41132 tion. J-43233 Connect breakout box J-41132 in se- J-39200 ries between connector EA and the EECU. Connect jumper harness J- 43233 in series between connector EB and the EECU.
  • Page 140 Group 28 Troubleshooting Fuel Temperature Sensor, Tempera- ture/Resistance Chart W2002742...

  • Page 141: Mid 128 Pid 175 Engine Oil Temperature

    Group 28 Troubleshooting MID 128 PID 175 Engine Oil Temperature In addition to the oil temperature, the sensor also measures the oil pressure. Fault Codes FMI 0 FMI 4 Temperature too high. Short circuit to ground. Conditions for fault code: Conditions for fault code: •...

  • Page 142: Mid 128 Pid 175 Engine Oil Temperature, Check

    Group 28 Troubleshooting MID 128 PID 175 Engine Oil Signal wire: Temperature, Check Measure the resistance with ohmme- J-39200 Special tools: J-43233, J-39200, J-41132, ter J-39200. 9998534 Ignition key must be in the OFF posi- NOTE! tion. Check all the particular connectors for loose connections Measuring Optimal value as well as for switch resistance and oxidation.
  • Page 143 Group 28 Troubleshooting Check of Subsystem Oil temperature Ignition key must be in the ON posi- J-41132 tion. J-43233 Connect breakout box J-41132 in se- J-39200 ries between connector EA and the EECU. Connect jumper harness J- 43233 in series between connector EB and the EECU.
  • Page 144 Group 28 Troubleshooting Oil Temperature Sensor, Tempera- ture/Resistance Chart W2002727...

  • Page 145: Mid 128 Pid 228 Road Speed Sensor Calibration

    Group 28 Troubleshooting MID 128 PID 228 Road Speed Sensor Calibration Fault Codes FMI 11 K factor message not available on the information link (SAE J1587). Conditions for fault code: • PID 228 the message is not available on the infor- mation link (SAE J1587).

  • Page 146: Mid 128 Pid 228 Road Speed Sensor Calibration, Check

    Group 28 Troubleshooting MID 128 PID 228 Road Speed Sensor Calibration, Check Special tools: J–43233, J-39200, J-41132 NOTE! Check all the particular connectors for loose connections as well as for switch resistance and oxidation. For detailed circuit information, refer to “VNL, VNM Elec- trical Schematics,”...

  • Page 147: Mid 128 Ppid 86 Engine Brake Torque Percent

    Group 28 Troubleshooting MID 128 PPID 86 Engine Brake Torque Percent Fault Codes FMI 9 Engine brake torque information is not available (SAE J1587 message). Conditions for fault code: • PPID 86 the message is not available on the infor- mation link (SAE J1587).

  • Page 148: Mid 128 Ppid 86 Engine Brake Torque Percent, Check

    Group 28 Troubleshooting MID 128 PPID 86 Engine Brake Torque Percent, Check Special tools: J-43233, J-39200, J-41132 NOTE! Check all the particular connectors for loose connections as well as for switch resistance and oxidation. For detailed circuit information, refer to “VNL, VNM Elec- trical Schematics,”...

  • Page 149: Mid 128 Ppid 119 High Coolant Temperature

    Group 28 Troubleshooting MID 128 PPID 119 High Coolant Temperature D12B, D12C, D7C Engines Fault Codes FMI 0 Temperature too high. Conditions for fault code: • The coolant temperature exceeds 102 C (216 Possible cause: • Low coolant level. • Fault in thermostat.

  • Page 150: Mid 128 Ppid 119 High Coolant Temperature, Check

    Group 28 Troubleshooting MID 128 PPID 119 High Coolant Check of Component Note: Faults in the component can be caused by faults Temperature, Check in the wiring harness of the EECU. Thus, a check of the (D12B, D12C, D7C Engines) wiring harness should also be made before connecting a Special tools: 9998534, J-43233, J-39200, J- new component.
  • Page 151 Group 28 Troubleshooting Check of Subsystem Coolant Temperature Connect breakout box J-41132 in se- ries between connector EA and the EECU. Connect jumper harness J- 43233 in series between connector EB and the EECU. Measure the voltage using DMM J- J-41132 39200.

  • Page 152: Mid 128 Ppid 122 Vcb Engine Compression Brake

    Group 28 Troubleshooting MID 128 PPID 122 VCB Engine Compression Brake D12B and D12C Fault Codes FMI 3 • The output is switched off. Short circuit to voltage. Noticeable external symptom: Conditions for fault code: • Yellow lamp lights up. •...

  • Page 153: Mid 128 Ppid 122 Vcb Engine Compression Brake, Check

    Group 28 Troubleshooting MID 128 PPID 122 VCB Engine Check of component Compression Brake, Check Compression brake solenoid, VCB Special tools: J-43233, J-39200, J-41132 Disconnect the two wires at the J-39200 D12B and D12C compression brake solenoid. The com- pression brake solenoid is located NOTE! under the valve cover.

  • Page 154: Mid 128 Ppid 123 Epg 2

    Group 28 Troubleshooting MID 128 PPID 123 EPG 2 D12B and D12C Fault Codes FMI 3 • Yellow lamp is requested. Short circuit to voltage. Noticeable external symptom: Conditions for fault code: • Yellow lamp lights up. • Output activated. •...

  • Page 155: Mid 128 Ppid 123 Epg 2, Check

    Group 28 Troubleshooting MID 128 PPID 123 EPG 2, Check of component Check EPG control (PWM box) D12B and D12C Disconnect the connector to the EPG 9998534 Special tools: J-43233, J-39200, J-41132, control box. Install breakout harness J-39200 9998534 9998534 to the EPG control connector only.

  • Page 156: Mid 128 Ppid 124 Epg 1

    Group 28 Troubleshooting MID 128 PPID 124 EPG 1 Fault Codes FMI 3 • Yellow lamp is requested. Short circuit to voltage. Noticeable external symptom: Conditions for fault code: • Yellow lamp lights up. • Output activated. • EPG 1 constantly activated. •...

  • Page 157: Mid 128 Ppid 124 Epg 1, Check

    Check all the particular connectors for loose connections solenoid used on the D7C, see publi- as well as for switch resistance and oxidation. cation TSI-270–600–07 (11/96). For detailed circuit information, refer to “VNL, VNM Elec- trical Schematics,” Group 37. Disconnect the connector to EPG con- 9998534 Measurement at the component’s...

  • Page 158: Mid 128 Sid 1/2/3/4/5/6 Injector

    Group 28 Troubleshooting MID 128 SID 1/2/3/4/5/6 Injector D12B and D12C Error Code Information Error code Explanation SID 1 Injector 1 SID 2 Injector 2 SID 3 Injector 3 SID 4 Injector 4 SID 5 Injector 5 SID 6 Injector 6 Fault Codes FMI 2 Possible cause:...
  • Page 159 Group 28 Troubleshooting FMI 4 • 3 or 5 cylinder operation. Short circuit to ground, injector low or high side. FMI 7 Conditions for fault code: The mechanical system does not respond in the correct • Injector activated. Conditions for fault code: •...

  • Page 160: D12B And D12C

    Group 28 Troubleshooting MID 128 SID 1/2/3/4/5/6 Injector, Wires Check Connect breakout box J-41132 to the J-39200 Special tools: J-43233, J-39200, J-41132 EA connector, wiring harness end only. J-41132 DO NOT connect 100pt to the EECU. D12B and D12C Measure the resistance with ohmme- NOTE! ter J-39200.
  • Page 161 Group 28 Troubleshooting Check of component Injectors Disconnect both the connections for J-39200 each respective injector. Measure the resistance with ohmme- ter J-39200 on the injector. Ignition key must be in the OFF posi- tion. Measuring Optimal value points High side / low 1.5 - 2.0 side High side / alter-...

  • Page 162: Mid 128 Sid 17 Fuel Shutoff Valve

    Group 28 Troubleshooting MID 128 SID 17 Fuel Shutoff Valve D7C only Fault Codes FMI 3 valve and EECU. Short circuit to battery voltage. Reaction from the EECU: Conditions for fault code: • Fault code is set. • Output activated. •...

  • Page 163: Mid 128 Sid 17 Fuel Shutoff Valve, Check

    Group 28 Troubleshooting MID 128 SID 17 Fuel Shutoff Check of component Valve, Check Fuel shut-off valve solenoid Special tools: J-43233, J-39200, J-41132, 9998534 Disconnect the connector to the fuel 9998534 shut-off valve solenoid. Install breakout J–39200 D7C only harness 9998534 to the solenoid har- ness end only.

  • Page 164: Mid 128 Sid 20 Timing Sleeve

    Group 28 Troubleshooting MID 128 SID 20 Timing Sleeve D7C only Fault Codes FMI 2 • Short circuit to ground, ground side. Short circuit to battery voltage, timing sleeve, positive Reaction from the EECU: side. • Fault code is set. Conditions for fault code: •...
  • Page 165 Group 28 Troubleshooting FMI 6 Reaction from the EECU: Short circuit to ground, timing sleeve positive side. • Fault code is set. Conditions for fault code: • Red lamp is requested. • Short circuit to ground on EA9. • Output for timing sleeve and rack drive are switched off.

  • Page 166: Mid 128 Sid 20 Timing Sleeve, Check

    Group 28 Troubleshooting MID 128 SID 20 Timing Sleeve, Supply wire: Check Measure the resistance with ohmme- J-39200 Special tools: J-43233, J-39200, J-41132, J- ter J-39200. 38748 Ignition key must be in the OFF posi- D7C only tion. Measuring Optimal value NOTE! points Check all the particular connectors for loose connections...

  • Page 167: Mid 128 Sid 21 Engine Position Timing Sensor

    Group 28 Troubleshooting MID 128 SID 21 Engine Position Timing Sensor D12B and D12C The primary function of the engine position sensor (cam sensor) is to provide engine position information to the EECU. As a secondary function, it also provides engine tim- ing (speed) information.

  • Page 168: Mid 128 Sid 21 Engine Position Timing Sensor, Check

    Group 28 Troubleshooting MID 128 SID 21 Engine Position Supply wire: Timing Sensor, Check Measure the voltage with voltmeter J- J-39200 Special tools: J-43233, J-39200, J-41132, 39200. 998534 Ignition key must be in the ON posi- D12B and D12C tion. Measuring Optimal value NOTE!

  • Page 169: Mid 128 Sid 21 Needle Lift Sensor

    Group 28 Troubleshooting MID 128 SID 21 Needle Lift Sensor D7C only Needle lift sensor. The needle lift sensor is located on first the cylinder. Fault Codes FMI 2 Intermittent loss of signal or incorrect signal. Conditions for fault code: •...

  • Page 170: Mid 128 Sid 21 Needle Lift Sensor, Check

    Group 28 Troubleshooting MID 128 SID 21 Needle Lift Supply wire: Sensor, Check Measure the voltage with voltmeter J- J-39200 Special tools: J-43233, J-39200, J-41132, 39200. 9998534 Ignition key must be in the ON posi- D7C only tion. Measuring Optimal value NOTE! points Check all the particular connectors for loose connections...

  • Page 171: Mid 128 Sid 22 Engine Speed Sensor

    Group 28 Troubleshooting MID 128 SID 22 Engine Speed Sensor The primary function of the engine timing sensor (crank sensor) is to provide engine timing (speed) information to the EECU. As a secondary function, it also provides lim- ited engine position information. Fault Codes FMI 2 Reaction from the EECU:...

  • Page 172: Mid 128 Sid 22 Engine Speed Sensor, Check

    Group 28 Troubleshooting MID 128 SID 22 Engine Speed Supply wire: Sensor, Check Measure the voltage with voltmeter J- J-39200 Special tools: J-43233, J-39200, J-41132, 39200. 9998534 Ignition key must be in the ON posi- NOTE! tion. Check all the particular connectors for loose connections Measuring Optimal value as well as for switch resistance and oxidation.

  • Page 173: Mid 128 Sid 23 Rack Actuator

    Group 28 Troubleshooting MID 128 SID 23 Rack Actuator D7C only Fault Codes FMI 2 FMI 4 Short circuit to ground, rack drive ground side. Short circuit to battery voltage, rack drive positive side. Conditions for fault code: Conditions for fault code: •...
  • Page 174 Group 28 Troubleshooting FMI 6 • The engine stops or does not start. Short circuit to ground, rack drive positive side. FMI 8 Conditions for fault code: Current too high to rack drive under long period of time. • Short circuit to ground on EA8. Conditions for fault code: Possible cause: •...

  • Page 175: Mid 128 Sid 23 Rack Actuator, Check

    Group 28 Troubleshooting MID 128 SID 23 Rack Actuator, Supply wire: Check Measure the resistance with ohmme- J-39200 Special tools: J-43233, J-39200, J-41132, J- ter J-39200. 38748 Ignition key must be in the OFF posi- D7C only tion. Measuring Optimal value NOTE! points Check all the particular connectors for loose connections...

  • Page 176: Mid 128 Sid 24 Rack Position Sensor

    Group 28 Troubleshooting MID 128 SID 24 Rack Position Sensor D7C only Fault Codes FMI 2 Incorrect data. Conditions for fault code: • Unreasonable measurement value from rack posi- tion sensor. Possible cause: • Sensor value outside measurement range. • Open circuit or short circuit in wires.

  • Page 177: Mid 128 Sid 24 Rack Position Sensor, Check

    Group 28 Troubleshooting MID 128 SID 24 Rack Position Search wire: Sensor, Check Measure the resistance with ohmme- J-39200 Special tools: J-43233, J-39200, J-41132, J- ter J-39200. 38748 Ignition key must be in the OFF posi- D7C only tion. Measuring Optimal value NOTE! points...

  • Page 178: Mid 128 Sid 33 Fan Control

    Group 28 Troubleshooting MID 128 SID 33 Fan Control Fault Codes FMI 5 Break. FMI 3 Conditions for fault code: Short circuit to voltage. • Output switched off. Conditions for fault code: • Open circuit in the circuit for fan control. •...

  • Page 179: Mid 128 Sid 33 Fan Control, Check

    Group 28 Troubleshooting MID 128 SID 33 Fan Control, Check of component Check Fan control solenoid valve Special tools: J-43233, J-39200, J-41132, J- 43147 Disconnect the connector to the fan J-43147 control solenoid valve. Install breakout J-39200 NOTE! harness J-43147 to the solenoid valve Check all the particular connectors for loose connections harness end only.

  • Page 180: Mid 128 Sid 64 Redundant Engine Speed Sensor

    Group 28 Troubleshooting MID 128 SID 64 Redundant Engine Speed Sensor D7C only The redundant engine speed sensor is used as a secondary engine timing (speed) and secondary engine position sensor. Primary engine timing (speed) information is pro- vided by the engine timing (crank) sensor. Primary engine position information is provided by the needle lift sensor.

  • Page 181: Mid 128 Sid 64 Redundant Engine Speed Sensor, Check

    Group 28 Troubleshooting MID 128 SID 64 Redundant En- Supply wire: gine Speed Sensor, Check Measure the voltage with voltmeter J- J-39200 Special tools: J-43233, J-39200, J-41132 39200. D7C only Ignition key must be in the ON posi- tion. NOTE! Measuring Optimal value Check all the particular connectors for loose connections...
  • Page 182 Group 28 Troubleshooting MID 128 SID 70 Preheater Element 1 Each preheater is equipped with a fuse between the preheating relay and element. The fuse and element are monitored by a sense wire that determines if the circuit is intact. Fault Codes FMI 3 Noticeable external symptom:...

  • Page 183: Mid 128 Sid 70 Preheater Element 1

    Group 28 Troubleshooting MID 128 SID 70 Preheater Ele- Check of Subsystem ment 1, Check Preheating 1, element diagnostics Special tools: J–43233, J-39200, J-41132 NOTE! Ignition key must be in the ON posi- J-41132 tion. J-43233 Check all the particular connectors for loose connections Connect breakout box J-41132 in se- J-39200 as well as for switch resistance and oxidation.

  • Page 184: D12B Only

    Group 28 Troubleshooting MID 128 SID 71 Preheater Element 2 D12B only Each preheater is equipped with a fuse between the preheating relay and element. The fuse and element are monitored by a sense wire that determines if the circuit is intact. Fault Codes FMI 3 •...

  • Page 185: Mid 128 Sid 71 Preheater Element 2, Check

    Group 28 Troubleshooting MID 128 SID 71 Preheater Ele- Check of component ment 2, Check Preheating 2, element Special tools: J-43233, J-39200, J-41132 Remove the fuse and support (red J-39200 D12B plastic part) between pre-heat relay #2 and pre-heat element #2 terminal. NOTE! Ignition key must be in the OFF posi- tion.
  • Page 186 Group 28 Troubleshooting MID 128 SID 230 Idle Validation Switch 1 Fault Codes FMI 3 Short circuit to battery voltage. Conditions for fault code: • Accelerator pedal released. • The voltage on EB4 exceeds 75% of B+. Possible cause: • Short circuit to battery voltage on wire between EECU and VECU.

  • Page 187: Mid 128 Sid 230 Idle Validation Switch 1

    Group 28 Troubleshooting MID 128 SID 230 Idle Validation Switch 1, Check Special tools: J-43233, J-39200, J-41132 NOTE! Check all the particular connectors for loose connections as well as for switch resistance and oxidation. For detailed circuit information, refer to “VNL, VNM Elec- trical Schematics,”...

  • Page 188: Mid 128 Sid 231 Sae J1939 Control Link

    Group 28 Troubleshooting MID 128 SID 231 SAE J1939 Control Link Fault Codes FMI 2 • Information is read/sent instead on the information link (SAE J1587). Communications link (SAE J1939) does not function. Noticeable external symptom: Conditions for fault code: •...
  • Page 189 Group 28 Troubleshooting FMI 12 Loss of message from the VECU. Conditions for fault code: • The communication between EECU and VECU does not function. Possible cause: • No contact with VECU. Reaction from the EECU: • Fault code is set. •...

  • Page 190: Fault Codes

    Group 28 Troubleshooting MID 128 SID 232 5 Volt DC Supply Fault Codes FMI 3 Short circuit to voltage. Conditions for fault code: • The voltage on EA4 exceeds 5.5 V. Possible cause: • Short circuit to battery voltage on the output. Reaction from the EECU: •...

  • Page 191: Mid 128 Sid 232 5 Volt Dc Supply, Check

    Group 28 Troubleshooting MID 128 SID 232 5 Volt DC Sup- Supply wire: ply, Check Measure the voltage with voltmeter J- J-39200 Special tools: J-43233, J-39200, J-41132, 39200. 9998534 Ignition key must be in the ON posi- NOTE! tion. Check all the particular connectors for loose connections Measuring Optimal value as well as for switch resistance and oxidation.

  • Page 192: Mid 128 Sid 240 Program Memory

    Group 28 Troubleshooting MID 128 SID 240 Program Memory Fault Codes FMI 2 Incorrect checksum in program memory. Conditions for fault code: • Incorrect checksum (EECU calculates only at start- up). Possible cause: • Error when programming. • Internal fault in the EECU. Reaction from the EECU: •...

  • Page 193: Fault Codes

    Group 28 Troubleshooting MID 128 SID 250 SAE J1587/1708 Information Link Fault Codes FMI 12 Internal fault in the EECU. Conditions for fault code: • The information link (SAE J1587) does not function internally in the EECU. Possible cause: • Internal fault in the EECU.

  • Page 194: Fault Codes

    Group 28 Troubleshooting MID 128 SID 253 Data Set Memory EEPROM Fault Codes FMI 2 Incorrect checksum in data set memory. Conditions for fault code: • Checksum error. Possible cause: • Internal fault in the EECU. • Error when programming. Reaction from the EECU: •...

  • Page 195: Fault Codes

    Group 28 Troubleshooting MID 128 SID 254 Engine Electronic Control Unit (EECU) Fault Codes FMI 2 Reaction from the EECU: Internal fault in the EECU. • Fault code is set. Conditions for fault code: • Red lamp is requested. • Incorrect self test in the EECU.
  • Page 196 Group 28 Troubleshooting FMI 12 Internal fault in the EECU. Conditions for fault code: • Incorrect self test in the EECU. Possible cause: • Internal fault in the EECU. Reaction from the EECU: • Fault code is set. • Red lamp is requested. Noticeable external symptom: •...

  • Page 197: Mid 144 Vecu

    Group 28 Troubleshooting MID 144 VECU MID 144 Fault Code Table MID:Message Identification Description. SID:Subsystem Identification Description. PID:Parameter Identification Description. FMI:Failure Mode Identifier. Error code Component/Function Section MID 144-PID 29 SecondAccelerator Pedal Po- 3, 4, 5 “MID 144 PID 29 Sec- sition ond Accelerator Pedal Position Sensor”...
  • Page 198 Group 28 Troubleshooting Error code Component/Function Section MID 144–SID 250 SAE J1587/1708 Information 3, 4 “MID 144 SID 250 SAE Link J1587/1708 Information Link” page 238 MID 144–SID 253 Data Set Memory EEPROM 3, 4 “MID 144 SID 253 Data Set Memory EEPROM”...

  • Page 199: Mid 144 Pid 29 Second Accelerator Pedal Position Sensor

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 200: Mid 144 Pid 29 Second Accelerator Pedal Position Sensor, Check

    Group 28 Troubleshooting MID 144 PID 29 Second Accel- Connect a voltmeter to the breakout J-39200 erator Pedal Position Sensor, harness pins and measure the voltage. Check Measuring points Expected value Other special equipment: J-39200, J-41133, Pin A / Pin E 5.4 ±...
  • Page 201 Group 28 Troubleshooting Check of Subsystem Supply wire: Disconnect the VECU and install J-43234 Ignition key in ON position. adapter J-43234 between the VECU and wiring harness connectors PB/PA. Connect a voltmeter to the 60–pin J-39200 breakout box and measure the voltage. Connect the 60–pin breakout box 9998551 9998551 (with overlay J-43340) to the...

  • Page 202: Mid 144 Pid 84 Road Speed

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 203: Mid 144 Pid 84 Road Speed, Check

    Disconnect the VECU and install J-43234 adapter J-43234 to the wiring harness Pin A / Pin B 265 ± 20% Volvo connector PB only. 3.4k ± 20% Fuller 3.17k ± 20% Allison HT- Connect 60–pin breakout box 9998511...
  • Page 204 J-43340 points minimum value PB6 / PB20 +0.1 V to -0.1 Volvo +0.1 V to -0.1 Fuller Personal injury hazard. Never work under or around a +0.1 V to -0.1 Allison HT- raised vehicle unless it is securely supported on jack stands of adequate rating and the front wheels are securely chocked.

  • Page 205: Mid 144 Pid 91 Accelerator Pedal Position

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 206: Mid 144 Pid 91 Accelerator Pedal Position, Check

    Group 28 Troubleshooting MID 144 PID 91 Accelerator Supply Wire: Pedal Position, Check Other special equipment: J-39200, J-43234, Turn the ignition key to the ON posi- 9998551, J-41133, J-43340 tion. NOTE! • Read off the other fault codes for the VECU. Connect a voltmeter to the connector J-39200 •...
  • Page 207 Group 28 Troubleshooting Supply Wire: Turn the ignition key to the OFF posi- tion. Turn the ignition key to the ON posi- tion. Using an ohmmeter, measure the re- J-39200 sistance of pin A to pin E, and pin A to Using a voltmeter at the 60-pin break- J-39200 pin B.

  • Page 208: Mid 144 Pid 152 Vecu, Number Of Resets

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 209: Fault Codes

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 210: Mid 144 Ppid 69 Idle Validation Switch, Check

    Group 28 Troubleshooting MID 144 PPID 69 Idle Validation Wiring harness Switch, Check Other special equipment: J-39200, J-41132, To check the wiring harness, refer to J-43234, J-43233, 9998551, J-43340 “VNL, VNM Electrical Schematics,” Group 37. NOTE! • Read off the other fault codes for the VECU. Check of component —...
  • Page 211 Group 28 Troubleshooting Check of subsystem Connect voltmeter J-39200 to the 60- J-39200 pin breakout box and measure the Disconnect the VECU and install J-43234 voltage. adapter J-43234 between the VECU and wiring harness connectors PA/PB. Measuring points Expected value PB17 / PB22 0 V (accelerator pedal at idle)

  • Page 212: Mid 144 Ppid 70 Pedal Switches, Supply

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 213: Mid 144 Ppid 70 Pedal Switches, Supply, Check

    Group 28 Troubleshooting MID 144 PPID 70 Pedal Connect a voltmeter to the breakout J-39200 Switches, Supply, Check harness connector and measure the voltage. Other special equipment: J-39200, J-43234, 9998551, J-43340, J-41133 Measuring points Expected value Pin D / alternate NOTE! ground •...
  • Page 214 Group 28 Troubleshooting Connect an ohmmeter to the wiring J-39200 Connect an ohmmeter to the connec- J-39200 harness connector and measure the tor and measure the resistance. resistance. Measuring points Expected value Measuring points Expected value Pin D / Pin C Open circuit (accelera- “Normal Open”...
  • Page 215 Group 28 Troubleshooting Check of Subsystem Signal wire, brake pedal switch: Disconnect the VECU and install J-43234 Turn the ignition key to the ON posi- tion. adapter J-43234 between the VECU and wiring harness PA/PB. Connect a voltmeter to the 60-pin J-39200 breakout box and measure the voltage.

  • Page 216: Mid 144 Ppid 71 Cruise Control And Engine Brake, Supply Switch

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 217: Mid 144 Ppid 71 Cruise Control And Engine Brake, Supply Switch, Check

    “VNL, VNM Elec- trical Schematics,” Group 37. Supply wire, exhaust brake switch: • Note: checks concerning VCB only apply to vehicles equipped with Volvo Compression Brake. Turn the ignition key to the ON posi- Appropriate Tests in the VCADS tion. Pro Tool The following test(s) are useful for closely examining the component’s function:...
  • Page 218 Group 28 Troubleshooting harness should also therefore be made before connect- Connect an ohmmeter to the connec- J-39200 ing a new component. tor and measure the resistance. Check of the switch for the cruise control: Measuring points Expected value Pin E (wire #563A) / SET+ Disconnect the connector at the switch alternate ground...
  • Page 219 Group 28 Troubleshooting Connect an ohmmeter to the switch J-39200 Connect an ohmmeter to the switch J-39200 pins and measure the resistance. pins and measure the resistance. Measuring points Expected value Measuring points Expected value Pin 1 / Pin 6 open circuit (switch Pin C / Pin D open circuit...
  • Page 220 Group 28 Troubleshooting Signal wire, cruise control switch: Signal wire, exhaust brake switch: Turn the ignition key to the ON posi- Turn the ignition key to the ON posi- tion. tion. Connect a voltmeter to the 60-pin J-39200 Connect a voltmeter to the 60-pin J-39200 breakout box and measure the voltage.

  • Page 221: Mid 144 Ppid 72 Accelerator Pedal, Supply Sensors

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 222: Mid 144 Ppid 72 Accelerator Pedal, Supply Sensors, Check

    Group 28 Troubleshooting MID 144 PPID 72 Accelerator Connect a voltmeter to the connector J-39200 Pedal, Supply Sensors, Check and measure the voltage from pin A to pin E (5–pin harness). Other special equipment: J-39200, J-41133, 9998551, J-43340, J-43234 Measuring points Expected value NOTE! Pin A / Pin E...
  • Page 223 Group 28 Troubleshooting Check of Subsystem Supply wire: Disconnect the VECU and install J-43234 Ignition key in ON position. adapter J-43234 between the VECU and wiring harness connectors PB/PA. Connect a voltmeter to the 60–pin J-39200 breakout box and measure the voltage Connect the 60–pin breakout box 9998551 from pin PB10 to PB22.

  • Page 224: Mid 144 Ppid 73 Second Accelerator Pedal, Supply Sensors

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 225: Mid 144 Ppid 73 Second Accelerator Pedal, Supply Sensors, Check

    Group 28 Troubleshooting MID 144 PPID 73 Second Connect a voltmeter to the connector J-39200 Accelerator Pedal, Supply Sen- and measure the voltage from pin A to sors, Check pin E (5–pin harness). Other special equipment: J-39200, J-41133, Measuring points Expected value 9998551, J-43340, J-43234 Pin A / Pin E...
  • Page 226 Group 28 Troubleshooting Check of Subsystem Supply wire: Disconnect the VECU and install J-43234 Ignition key in ON position. adapter J-43234 between the VECU and wiring harness connectors PB/PA. Connect a voltmeter to the 60–pin J-39200 breakout box and measure the voltage Connect the 60–pin breakout box 9998551 from pin PB26 to PB23.

  • Page 227: Mid 144 Ppid 75 Range Inhibitor, Solenoid Valve Status

    Group 28 Troubleshooting MID 144 PPID 75 Range Inhibitor, Solenoid Valve Status This applies only to vehicles with Volvo transmissions. • Text Messages In vehicles equipped with diagnostic display, the fol- lowing message(s) will appear: • Instrument Cluster Graphics Display (VN): Range inhibitor •...

  • Page 228: Mid 144 Ppid 75 Range Inhibitor, Solenoid Valve Status, Check

    Group 28 Troubleshooting MID 144 PPID 75 Range In- Supply wire: hibitor, Solenoid Valve Status, Turn the ignition key to the ON posi- Check tion. Other special equipment: J-39200, 9998551, J-43340, J-43234, J–42472 Connect a voltmeter from the breakout J-39200 NOTE! harness terminals to the alternate •...
  • Page 229 Group 28 Troubleshooting Ground the #2 breakout pin to an al- Turn the ignition key to the ON posi- ternate ground. Listen for the range tion. inhibitor valve to click. CAUTION Connect a voltmeter to the 60-pin J-39200 breakout box and measure the voltage. Accidental grounding of pin #1 may blow a fuse or Measuring points Expected value...
  • Page 230 Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 231: Mid 144 Sid 230 Idle Validation Switch 1

    Group 28 Troubleshooting MID 144 SID 230 Idle Validation Connect an ohmmeter to the breakout J-39200 Switch 1, Check harness pins and measure the resis- tance. Other special equipment: J-39200, 9998551, J-43340, J-41133, J-43234 Measuring points Expected value Pin C / alternate 1.2 ±...
  • Page 232 Group 28 Troubleshooting Check of Subsystem Connect a voltmeter to the 60-pin J-39200 breakout box and measure the voltage. Disconnect the VECU and install J-43234 adapter J-43234 between the VECU Measuring points Expected value and wiring harness connectors PA/PB. PA23 / PA12 0 V (accelerator at idle) B+ (full acceleration) Connect 60-pin breakout box 9998551...

  • Page 233: Mid 144 Sid 231 Sae J1939 Control Link

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 234: Mid 144 Sid 231 Sae J1939 Control Link, Check

    Group 28 Troubleshooting MID 144 SID 231 SAE J1939 Turn the ignition key to the ON posi- Control Link, Check tion. Other special equipment: J-39200 NOTE! Using a voltmeter, back probe connec- • Read off the other fault codes for the VECU. tor PC (Green 5–pin) at connectors PC4 and PC5 with the connector in- •...

  • Page 235: Mid 144 Sid 240 Program Memory

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 236: Fault Codes

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 237: Mid 144 Sid 243 Cruise Control Set Switch, Check

    Group 28 Troubleshooting MID 144 SID 243 Cruise Control Connect an ohmmeter to the connec- J-39200 Set Switch, Check tor and measure the resistance. Other special equipment: J-39200, 9998551, Measuring points Expected value J-43340, J-43234 Wiring harness con- 1.2 ± 20% k NOTE! nector E / alternate ground...
  • Page 238 Group 28 Troubleshooting Check of Component Connect 60-pin breakout box 9998551 9998551 Cruise control set switch (with overlay J-43340) to the adapter. J-43340 Note: Faults in the component can be caused by faults in the wiring harness of the VECU. A check of the wiring Signal wire: harness should also therefore be made before connect- ing a new component.

  • Page 239: Mid 144 Sid 250 Sae J1587/1708 Information Link

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 240: Mid 144 Sid 250 Sae J1587/1708 Information Link, Check

    Group 28 Troubleshooting MID 144 SID 250 SAE Using a voltmeter, back the probe J-39200 J1587/1708 Information Link, connector PC (Green, 5–pin) at con- Check nectors PC1 and PC2 with the connector installed in the VECU. Special tools: J-39200 Note: This may require the use of volt- meter function MIN/MAX.

  • Page 241: Mid 144 Sid 253 Data Set Memory Eeprom

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 242: Fault Codes

    Data Link Instrument Cluster (WG, AC, WX): The Data Link instrument cluster graphics display used on WG-, AC-, and WX-series vehicles can display a limited number of text messages. For infor- mation, see “Data Link Instrumentation,” Volvo Service Publication PV776–381–620SM. • VCADS Pro Display:...

  • Page 243: Mid 144 Psid 3 Idle Validation Switch 3

    Group 28 Troubleshooting MID 144 PSID 3 Idle Validation Signal wire: Switch 3, Check Turn the ignition key to the OFF posi- Other special equipment: J-39200, 9998551, tion. J-43340, J-43234, J-41133 NOTE! • Read off the other fault codes for the VECU. Connect an ohmmeter to the connec- J-39200 tor and measure the resistance.
  • Page 244 Group 28 Troubleshooting Check of Subsystem Connect a voltmeter to the 60-pin J-39200 breakout box and measure the voltage. Disconnect the VECU and install J-43234 adapter J-43234 between the VECU Measuring points Expected value and wiring harness connectors PA/PB. PB30 / PA12 0 V (accelerator at idle) B+ (full acceleration) Connect a 60-pin breakout box...

  • Page 245: Service Procedures

    Group 28 Service Procedures Service Procedures 2841-03-02-01 Engine ECU, Replacement Special tools: 9998482 Note: Make sure that the parking brake is applied. Disconnect the power with main switch Before working on a vehicle, set the parking brakes, place the transmission in neutral, and block the wheels.
  • Page 246 Group 28 Service Procedures Clamp the cables under the control unit. Switch on the power. Note: When starting the engine with cab up, make sure that a gear is not engaged. The parking brake should be applied. Conduct a function check. Check that there are no fault codes in the control unit.

  • Page 247: Feedback

    If you have any comments or suggestions, make a copy of this page, write down your comments and send them to us, either via telefax or mailing directly to the address listed below. From Volvo Trucks North America, Inc................Dept. 516 Service Publications ................

  • Page 249: Operation Numbers

    Operation Numbers 2841-03-02-01 Engine ECU, Replacement ......243...
  • Page 250 Volvo Trucks North America, Inc. P.O. Box 26115, Greensboro, NC 27402-6115 Volvo Trucks Canada, Ltd. 6490 Vipond Drive, Mississauga, Ontario L5T 1W8 http://www.volvotrucks.volvo.com PV776-TSP144528 (1000) 06.2001 © Volvo Trucks North America, Inc., 2001...

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