Volvo B6324S Functional Description

Vehicle: s80, xc90

MY07

Vehicle: S80, xC90

Engine: B6324S

Functional Description

Table of content

DISCLAIMER...........................................................................................................................................................2

SYSTEM OVERVIEW.............................................................................................................................................3

COMMunICATIOn On ThE InTERnAL nETWORk..................................................................................4

InPuT SIGnALS ...................................................................................................................................................5

OuTPuT SIGnALS ..............................................................................................................................................6

DIAGnOSE FunCTIOnS - OVERVIEW ........................................................................................................7

CATALYTIC COnVERTER DIAGnOSTIC .......................................................................................................8

MISFIRE DIAGnOSTIC.....................................................................................................................................10

LEAkAGE DIAGnOSTIC .................................................................................................................................12

FuEL SYSTEM DIAGnOSIS ............................................................................................................................16

hEATED OxYGEn SEnSORS DIAGnOSTIC ............................................................................................18

APPEnDIx: CORRESPOnDInG MODE$06 DATA / DIAGnOSTIC FunCTIOnS

Table of Contents

Summary of Contents for Volvo B6324S

Page 1: Table Of Contents
MY07 Vehicle: S80, xC90 Engine: B6324S Functional Description Table of content DISCLAIMER................................2 SYSTEM OVERVIEW.............................3 COMMunICATIOn On ThE InTERnAL nETWORk..................4 InPuT SIGnALS ..............................5 OuTPuT SIGnALS ..............................6 DIAGnOSE FunCTIOnS – OVERVIEW ......................7 CATALYTIC COnVERTER DIAGnOSTIC .......................8 MISFIRE DIAGnOSTIC.............................10 LEAkAGE DIAGnOSTIC ..........................12 FuEL SYSTEM DIAGnOSIS ..........................16 hEATED OxYGEn SEnSORS DIAGnOSTIC ....................18...
Page 2: Disclaimer
Disclaimer All information, illustrations and specifications contained herein are based on the latest pro- duction information available at the time of this publication. Volvo reserves the right to make changes in specifications and design at any time. June 1 - 2008...
Page 3: System Overview
- Diagnostic Connector for connection to VADIS signals directly to the Engine Control Module (ECM). (Volvo Aftersales Diagnostic and Information System) - Driver Information Module (DIM), combined instru- ment panel - Climate Control Module (CCM)
Page 4 - Signal for constant idle speed compensation (P/N position) - Engaged gear. Diagnostic Connector The serial communication via the Diagnostic Con- nector is used when reading off the Volvo onboard diagnostic (OBD) system. Contact General allocation Contact General allocation Discretionary...
Page 5: Input Signals
Input signals Component Purpose A/C Linear high Pressure Sen- Provides information using a linear signal about any pressure changes on the high- sors pressure side of the A/C system. not used by emission related functions. Senses the accelerator pedal position. The signal is used by the ECM. The pedal is Accelerator Pedal designed with two independent signals, one with analogue and one with digital output (Pulse Width Modulated –...
Page 6: Output Signals
Output signals Component Purpose A/C Compressor Control Valve Controlling the A/C compressor displacement. not used by emission related functions. Connecting and disconnecting A/C compressor. not used by emission related func- A/C Relay tions. Exchange of information between the ECM and the other units occurs as well with the Alternator, LIn (bus) use of LIn serial communication.
Page 7: Diagnose Functions - Overview
DIAGNOSE FUNCTIONS – OVERVIEW The Engine Management System fuel/ignition system If a fault disappears after the DTC has been stored, control module has an on-board diagnostic system information about the fault is stored in the ECM. for self- diagnosis, continuously monitoring input and Every time the fault reoccurs a counter counts it.
Page 8: Catalytic Converter Diagnostic
Catalytic converter diagnostic General Description Exhaust system with a total of four sensors – two-sensor method stereo. HEGO UHEGO Tailpipe hEGO = universal heated Exhaust Gas Oxygen Sensor = ”Binary sensor” uhEGO = universal heated Exhaust Gas Oxygen Sensor = ”Linear sensor” = Close Coupled Catalyst = under Floor Catalyst...
Page 9 The three-way catalytic converter (TWC) stores oxygen Rich and lean lambda pulses are sent through the found in the exhaust gases and uses it to make toxic TWC. For a TWC with good gas converter and large gases less dangerous. The catalytic converter is a TWC oxygen storage capacity, it will take a long time for the converter in which hydrocarbons (HC) and carbon rich/lean pulse to reach the rear oxygen sensor.
Page 10: Misfire Diagnostic
Misfire diagnostic If the fuel/air mixture does not burn correctly, then Since mechanical tolerances and driveline oscillation the generated torque will be less than intended and the interfere with the signal, it is difficult to ascertain engine rpm will drop suddenly, (decelerate) the engine whether or not this interference is due to misfiring.
Page 11 Misfire Diagnostic Operation Corresponding MonitorID P0300 Multiple Cylinder Misfire Detected P0301 Cylinder 1 Misfire Detected P0302 Cylinder 2 Misfire Detected DTCs P0303 Cylinder 3 Misfire Detected P0304 Cylinder 4 Misfire Detected P0305 Cylinder 5 Misfire Detected P0306 Cylinder 6 Misfire Detected Monitor Strategy description Emission related Catalyst damage Typical Misfire diagnostic enable conditions...
Page 12: Leakage Diagnostic
Leakage diagnostic Vapor that evaporates from the fuel in the fuel tank is corresponding to a 0,20 inch or larger hole. The fuel routed to and stored in the EVAP canister from where tank system consists of fuel tank, fuel filler pipe, it is introduced into the combustion process via the EVAP canister, CP valve and all pipes between these Canister Purge (CP) valve.
Page 13 1. Reference leak measurement phase The rough leak check (≥ 0.04-inch) is performed by For the reference current measurement, the motor- monitoring the pump motor current gradient. Relative pump is switched on. In this mode fresh air is pum- pump motor current is created by using minimum ped through a 0.02-inch reference orifice, situated pump motor current and reference pump motor cur- internally in the module, and the pump motor current...
Page 14 3. Small leak test phase If the conditions for a small leak check (³0.02- inch) If the test value is very near to set 0.02 inch leakage are set the pump motor remains on in monitoring the reference leak measurement phase is performed mode until an elliptic combination of the relation again in order to compensate test value and make pump current and area ratio are fulfilled, or a maxi-...
Page 15 Leakage diagnostic operation Monitor Strategy description Leakage detection pump, me- chanical error DTCs P043E Continuous, high P043F Continuous, low P2407 Noisy during reference Typical Leakage diagnostic enable conditions Enable condition Minimum Maximum Ambient temperature 3°C 36°C Battery voltage 11.0 V 15.0 V Fuel level Atmospheric pressure...
Page 16: Fuel System Diagnosis
Fuel system diagnosis The fuel system diagnosis monitor the long term fuel fault. Greatest influence of this fault is at low load. trim adaptions, to check if any of the adaption points Fault leading to low fuel pressure. has reached it’s limits (rich or lean), and no more adaption is possible.
Page 17 Fuel system diagnostic operation Corresponding MonitorID Fuel system adaptation error Monitor Strategy description P0171 Lean fault, bank 1 P0172 Rich fault, bank 1 DTCs P0174 Lean fault, bank 2 P0175 Rich fault, bank 2 Typical Fuel System diagnosis enable conditions Enable condition Minimum Maximum...
Page 18: Heated Oxygen Sensors Diagnostic
Heated oxygen sensors diagnostic An S80 car with EMS system that meets ULEV2/EU- RO4 legal demands is fitted with two heated oxygen - Sensor circuit (P-code P0131, P0132 and P0151 and sensors per bank. The upper sensor is fitted before the P0152).
Page 19 Heated Oxygen Sensor operation Upper O2 Heater Control Circuit Monitor Strategy description Corresponding MonitorID P0031 Heater low fault, bank 1 P0032 Heater high fault, bank 1 P0051 Heater low fault, bank 2 P0052 Heater high fault, bank 2 Upper O2 Sensor Circuit P0131 Element low fault, bank 1 P0132...
Page 20 Mode $06 Data MY07 Vehicle: S80, XC90 Engine: B6324S Request on-board monitoring test results for specific monitored systems all systems. On-Board Diagnostic Monitor ID $00 is a bit-encoded value that The purpose of this service is to allow access to the results for on-board...
Page 21 Mode $06 Data MY07 Vehicle: S80, XC90 Engine: B6324S The test values shows the distance to fault limit (normalized values). 0-16384 = normal deviation 16385-30720 = aged system 30721-32767 = close to faultlimit 32768-65534 = fault 65535= not active Monitor...
Page 22 Mode $06 Data MY07 Vehicle: S80, XC90 Engine: B6324S The test values shows the distance to fault limit (normalized values). 0-16384 = normal deviation 16385-30720 = aged system 30721-32767 = close to faultlimit 32768-65534 = fault 65535= not active Monitor...
Page 23 Mode $06 Data MY07 Vehicle: S80, XC90 Engine: B6324S The test values shows the distance to fault limit (normalized values). 0-16384 = normal deviation 16385-30720 = aged system 30721-32767 = close to faultlimit 32768-65534 = fault 65535= not active Monitor ID Description...

Volvo B6324S Functional Description

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