Subaru 602 Technicians Reference Booklet
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Subaru 602 Technicians Reference Booklet

Subaru 602 Technicians Reference Booklet

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Technician
Reference
Booklet
ELECTRICAL SYSTEMS
OPERATION & DIAGNOSIS
Module 602
MSA5P0135C
June 2013

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Summary of Contents for Subaru 602

  • Page 1 Technician Reference Booklet ELECTRICAL SYSTEMS OPERATION & DIAGNOSIS Module 602 MSA5P0135C June 2013...
  • Page 3 Product Material Disclosure © 2013 Subaru of America, Inc. Printed in USA. All rights reserved. Contents may not be reproduced in whole or in part without prior written permission of publisher. Specifications in this Guide are based on the latest product information available at the time of publication.

  • Page 4: Table Of Contents

    Electrical Systems Operation & Diagnosis Module (602) Table of Contents InTroduCTIon ....................8 LAn/CAn InTroduCTIon ................. 8 HIgH Speed CAn SIgnAL ConSTruCTIon ..........12 Outline of Data Frame ................13 High Speed CAN Communication Circuit ........... 15 Can High Wire .................. 16 Can Low Wire ...................
  • Page 5 Remote Control Engine Starter Registration ..........61 KeyLeSS enTry ....................64 How To Register the Transmitter ..............65 Using the Subaru Select Monitor ............. 65 Security System ..................67 remoTe engIne STArT SySTem (reS) ............69 Tachometer Idle Speed Programming ............69 Anti-Grind ..................
  • Page 6 Electrical Systems Operation & Diagnosis Module (602) eLeCTrICAL ....................105 2014 ComBInATIon meTer ................110 Subaru Select Monitor III (SSMIII) ............110 Instrumentation/Driver Information ..........115 ServICe BuLLeTInS ..................116 TeCHTIpS ......................118 June 2013...
  • Page 7 SuppLemenTAL InFormATIon For KeyLeSS enTry regISTrATIon oF newer veHICLeS ............147 2012 to 2013 Impreza (Immobilizer Type B) ..........147 Registration of Keyless Transmitter with Subaru Select Monitor ..147 BRZ Keyless Entry System {Mechanical Key} ......... 149 Key Registration ..................149 To register a new keyless ID while keeping existing registered codes.

  • Page 8: Introduction

    CAN. Two types of CAN will be reviewed in this section of the reference booklet, the High speed and Low speed CAN. The first LAN/CAN system equipped on Subaru vehicles was a combination of the High speed and Low speed CAN. As the years progressed a switch to High speed CAN only was employed.
  • Page 9 Electrical Systems Operation & Diagnosis Module (602) A Controller Area Network (CAN) signal is composed of two separate pulses. One pulse is low voltage changing to high voltage and one pulse is high voltage changing to low voltage. Each pulse has its own wire.
  • Page 10 Electrical Systems Operation & Diagnosis Module (602) The CAN wires are twisted together along the entire length of the LAN. This protects the integrity of the CAN signal if an unintentional signal is created in the circuit from an overlying circuit that induces a magnetic field into the CAN wires.
  • Page 11 Electrical Systems Operation & Diagnosis Module (602) Combination Meter Clock Speed meter, Tachometer Clock, Fuel consumption Warning lamp Fuel gauge, Coolant Engine Coolant temp. gauge temp. speed Engine control Radiator fan control 125kbps 500kbps Immobilizer Fuel level Shift range Timer control...

  • Page 12: High Speed Can Signal Construction

    Electrical Systems Operation & Diagnosis Module (602) High Speed CAN Signal Construction When reviewing the service manual you will find references to High Speed CAN and Low Speed CAN. Each of these has a CAN-High wire and a CAN-Low wire. The differences in operating speed have already been discussed and now the construction of the two circuits needs to be understood before fully understanding operational differences.

  • Page 13: Outline Of Data Frame

    Electrical Systems Operation & Diagnosis Module (602) outline of data Frame When data is generated, the signal “Frame” comprises of a “start bit” and a “stop bit” to indicate the beginning and end of a signal. The frame also includes identification data, main data, and an error detection code.
  • Page 14 Electrical Systems Operation & Diagnosis Module (602) B, C CAN High Wire and E, F CAN Low Wire For example the CAN High Wire (B, C) receives a voltage signal ranging from 2.5 volts to 3.6 volts. The signal originates at point A and travels to point B and point C simultaneously.

  • Page 15: High Speed Can Communication Circuit

    Electrical Systems Operation & Diagnosis Module (602) High Speed CAn Communication Circuit The high speed CAN communication circuit is configured as shown in the illustration. The communication line connecting the ECM and the VDC is called the main bus, and the communication lines connecting the main bus and the other control modules are called the branch buses.

  • Page 16: Can High Wire

    Electrical Systems Operation & Diagnosis Module (602) High Speed CAN Voltage Check Voltage checks from the DLC are possible with the CAN active (Ignition on, Engine off). The normal voltage readings will vary by year, model, and the amount of data being carried on the CAN.

  • Page 17: Open Circuit In Main Bus

    Electrical Systems Operation & Diagnosis Module (602) open Circuit in main Bus An open circuit on the main bus can be detected by measuring the resistance between HS-CAN High and HS-CAN Low. For example, when measuring the resistance between HS-CAN High and HS-CAN Low at the DLC, the resistance should be 60 Ohms.

  • Page 18: Open Circuit In Branch Bus

    Electrical Systems Operation & Diagnosis Module (602) open Circuit in Branch Bus When an open circuit occurs on the Branch Bus, communication with the control module connected to that branch bus becomes disabled. In the example below, the BIU cannot communicate with the TCM.

  • Page 19: Ground Short Of Can High Wire

    Electrical Systems Operation & Diagnosis Module (602) Resistance checks should show continuity or very low resistance from the DLC to the CAN high wire and CAN low wire. Check the CAN high wire first. Check from the DLC to the affected modules electrical connector.

  • Page 20: Ground Short Of Can Low Wire

    Electrical Systems Operation & Diagnosis Module (602) ground Short of CAn low wire When a short to ground occurs on the CAN low wire, the voltage and data on the CAN low wire is not received by the CAN. The voltage of the CAN high wire drops because of the parallel wiring with the terminators.

  • Page 21: Diagnostic Procedure Using Hs-Can Dtcs

    Electrical Systems Operation & Diagnosis Module (602) diagnostic procedure using HS-CAn dTCs When communication with a control module becomes disabled, the BIU judges a defect exists and sets a DTC. The trouble location can be narrowed down by reading the DTC memory.

  • Page 22: Can Bus B Or Kac

    Electrical Systems Operation & Diagnosis Module (602) CAN Bus B or KAC CAN Bus B or KAC Keyless Access and Push Button Start vehicles are equipped with a second High speed CAN. The name for this new High Speed CAN will be High Speed CAN Bus B or KAC.

  • Page 23: Low Speed Can

    Electrical Systems Operation & Diagnosis Module (602) Low Speed CAN Low Speed CAN (ARTWORK) When the logic value of the Low Speed CAN is 1 the voltage of the CAN High signal is 0 volts and the value of the CAN Low signal is 5 volts. As the logic changes to 0 the CAN High voltage will change to 4 volts and the CAN Low signal will change to 1 volt.

  • Page 24: Local Interconnect Network (Lin)

    Electrical Systems Operation & Diagnosis Module (602) Local Interconnect Network (LIN) A Local Interconnect Network (LIN) connection is utilized on some models where control and confirmation of operation of a device is required. The LIN is a circuit that uses the body ground and one wire from a controller to a device.

  • Page 25: Monitoring Of Trouble In The System

    Electrical Systems Operation & Diagnosis Module (602) monitoring of Trouble in the System The control modules in the LAN system monitor the communication data between them. When a control module detects an error in the data it immediately transmits an error flag to notify the error to all the other modules of the LAN.
  • Page 26 Electrical Systems Operation & Diagnosis Module (602) The Combination Meter can also be used to display Diagnostic Trouble codes of the ECM, TCM and ABS/VDC system. The display function of the DTC’s is activated by turning on the ignition and while the Combination Meter needles are sweeping, push the Trip Meter control stalk one time.

  • Page 27: Combination Meter

    Electrical Systems Operation & Diagnosis Module (602) Combination meter The Combination Meter receives CAN and Analog data. The CAN data is received from the LAN while the Analog data is received directly from individual control modules or switches. examples of CAn and Analog data:...

  • Page 28: Select Monitor

    Electrical Systems Operation & Diagnosis Module (602) Select monitor The Select Monitor will display analog and CAN data while viewing the Integ. Unit mode. examples of SSmIII BIu data: Analog data CAn data BATT Voltage (Control) Key lock warning SW...

  • Page 29: Biu Customizing

    Electrical Systems Operation & Diagnosis Module (602) BIU Customizing The select monitor is also used to change the settings of the following items. This can be used to increase a customer’s satisfaction of the vehicle and during vehicle diagnosis. examples of BIu Customizing Settings:...

  • Page 30: Body Integrated Unit Customizing

    Electrical Systems Operation & Diagnosis Module (602) SETTINGS AND CONTENTS (CONTINUED) Body Integrated unit Customizing (new Items) - MT / AT: Disable or enable Key inter lock, shift lock. - 6 MT / Other than 6 MT: Allows speed sensor signal from 6 MT to serve as an input for VDC.

  • Page 31: Keyless Access With Push Button Start System

    Electrical Systems Operation & Diagnosis Module (602) Keyless Access with Push Button Start System The Keyless Access with Push Button Start System allows: - Doors to be unlocked or locked with a touch of the hand. - The trunk can be unlocked by pushing the exterior trunk opener button.
  • Page 32 Electrical Systems Operation & Diagnosis Module (602) Legacy/Outback Antenna BRZ Antenna Oscillator KA CM Antenna Remote Key Legacy/Outback Remote Key Receiver Remote Key BRZ Receiver Legacy/Outback Receiver Keyless Access Receiver for Keyless Access Receiver for BRZ is Legacy/Outback is SepArATe shared with TPMS.
  • Page 33 Electrical Systems Operation & Diagnosis Module (602) Legacy/Outback Oscillator BRZ Oscillator Oscillators Control and boost the wireless signal to the remote key when the remote key is outside of the vehicle. Oscillator KA CM Antenna Remote Key Remote Key Location...
  • Page 34 Electrical Systems Operation & Diagnosis Module (602) Driver Touching Thumb Switch Area 2. The driver changes their mind and shuts the door. The driver touches the lock button or sensor of the door handle and the doors lock. The entry illumination turns off.
  • Page 35 Electrical Systems Operation & Diagnosis Module (602) June 2013...
  • Page 36 Electrical Systems Operation & Diagnosis Module (602) note: If the vehicle is unlocked with the remote transmitter or keyless entry controls and the door is not opened, the doors will automatically lock after 1 minute (Brz only). Driver Touching Trunk Switch Trunk Switch 3.

  • Page 37: Ignition And Engine Start

    Electrical Systems Operation & Diagnosis Module (602) Ignition and engine Start Engine Start Stop Button 1. The driver sits in the driver seat. The interior antenna transmits a signal to the remote key. The remote key transmits a signal to the receiver.
  • Page 38 Electrical Systems Operation & Diagnosis Module (602) June 2013...
  • Page 39 Electrical Systems Operation & Diagnosis Module (602) June 2013...
  • Page 40 Electrical Systems Operation & Diagnosis Module (602) note: pressing the engine Start and Stop button while the starter is operating will turn off the starter. Remote Transmitter Position for Dead Transmitter Battery 5. A dead battery in the remote transmitter will prevent normal starting of the engine. In this condition, hold the remote key to the chrome ring of the Engine Start and Stop button and push the Engine Start and Stop button once while holding the brake pedal.

  • Page 41: Key Warning

    Electrical Systems Operation & Diagnosis Module (602) Key warning BRZ Combination Meter Warning Light 1. If the remote transmitter is removed from the vehicle with the engine operating, a flashing indicator light on the combination meter will activate and an audible chirp will be sounded.

  • Page 42: Wireless Communications

    Electrical Systems Operation & Diagnosis Module (602) wireless Communications 1. When the vehicle and the remote transmitter are separated, the vehicle outputs a signal every 250 milliseconds. This is the signal that wakes up the remote key. The wake signal is transmitted by the door handle antennas or trunk exterior antenna.

  • Page 43: Headlights

    Electrical Systems Operation & Diagnosis Module (602) Headlights The headlight operating logic for 2008 Impreza, 2009 Forester, 2010 Legacy and Outback and newer vehicles is described below. Lighting Switch No parking switch is available. Headlight operation Condition explanation of Headlights switch condition needed to turn on...
  • Page 44 • Dull note: Always review service • Normal procedures in the applicable • Sensitive Subaru Service manual. • Very Sensitive note: The number of levels may change by model. NOTES: These settings as listed on the SSMIII refer to the Sunload Sensors ability to detect darkness.

  • Page 45: Immobilizer Type A

    Electrical Systems Operation & Diagnosis Module (602) Immobilizer Type A System Construction The Subaru Immobilizer is designed to prevent unauthorized people from operating the vehicle. This is accomplished by the use of a coded transponder key that reacts with the Body Integrated Unit (BIU), Engine Control Module (ECM) and the Combination meter.
  • Page 46 Electrical Systems Operation & Diagnosis Module (602) Combination Meter Antenna The combination meter decrypts the code and The electric wave, absorbed by the antenna sends a response back to the BIU. in the transponder, charges the capacitor in the transponder. An encrypted code is sent at The result of this signal determines if the engine the end of the charging wave.

  • Page 47: Key

    BIU of all keys. This means that when one key is registered, they all must be registered. The registration process is accomplished using the Subaru Select Monitor III. Replacing the BIU requires that all the keys be replaced. The new keys must be registered to the vehicle and the new BIU (2005-2009).

  • Page 48: Combination Meter Or Engine Control Module

    Electrical Systems Operation & Diagnosis Module (602) note: The BIu on all vehicles must be set to “market mode” . Combination meter or engine Control module Replacement of the combination meter or Engine Control Module* requires that the new part be registered to the vehicle after installation.
  • Page 49 Electrical Systems Operation & Diagnosis Module (602) IMMOBILIZER SYSTEM CLICK YES Key Registration Mode Execute Press NO Security ID Input Teaching Code Press OK to Register another Key June 2013...

  • Page 50: Ecm Replacement

    Replacement of the ECM requires that the new ECM be registered to the vehicle by the vehicle identification number (VIN). Using Subaru Select Monitor III. Press “OK” To Register Second Key ECM Replacement Main Menu Register Third Key...
  • Page 51 Electrical Systems Operation & Diagnosis Module (602) System Selection Menu Engine Diagnosis Menu VIN Registered in ECM Follow the directions on the SSMIII to register the ECM. An ECM can only be registered once. Confirm the VIN before entering the number.

  • Page 52: 2012 Impreza Immobilizer Type B

    Electrical Systems Operation & Diagnosis Module (602) 2012 Impreza Immobilizer Type B The 2012 Impreza is equipped with a new Immobilizer system. This new system is identified as Immobilizer type ”B” . All previous Immobilizer systems will now be identified as type “A” .The Immobilizer type “B”...
  • Page 53 Electrical Systems Operation & Diagnosis Module (602) Desti- Parts required to replace or prepared Parts failed/lost Procedures to perform after parts replacement nation when items on the left fail Body Com- Body Com- inte- bina- inte- bina- grat- tion grat-...
  • Page 54 Electrical Systems Operation & Diagnosis Module (602) System Check Press YES for Immobilizer. System Selection Press NO, if the vehicle is not Keyless Access and Push Button Start. Confirm Ignition SW The ignition switch should be in the on position.
  • Page 55 Electrical Systems Operation & Diagnosis Module (602) Immobilizer Menu-6 Choices This decision screen provides 6 choices. 1. Immobilizer system registration- This process closely resembles the procedure currently used for type A Immobilizer systems. New and old keys are registered with this selection. Use this selection when adding new keys (old keys must first be deleted), and when the BIU is replaced (reS must also be registered using separate selection).

  • Page 56: Immobilizer System Registration

    Electrical Systems Operation & Diagnosis Module (602) Immobilizer System registration Registering Each Key Immobilizer System Registration This screen displays as the Immobilizer is registering each key. This process closely resembles the procedure currently used for type “A” Immobilizer systems. If this process is accidentally exited before completion of the first key, no key will start the vehicle.
  • Page 57 Electrical Systems Operation & Diagnosis Module (602) Registration Successful Previously Registered Key Follow the instructions on the screen until the This information is displayed after attempting to Immobilizer main menu is displayed. register a previously registered key. Failed Screen Failed Unregistered Key...

  • Page 58: Engine Ecu Registration

    Electrical Systems Operation & Diagnosis Module (602) engine eCu registration BIU Initializing This screen will display as the BIU communi- Immobilizer - Engine ECU Registration Choice cates with the new Engine ECM. This process allows registration of the Engine ECU) and eliminates the need to register each key.

  • Page 59: Meter/Scu Registration

    Electrical Systems Operation & Diagnosis Module (602) meter/SCu registration Engine ECU Registration Exit Follow the instructions on the screen until the Meter / SCU Registration main Immobilizer menu is displayed. Ex cute Meter / SCU Registration This process registers a new Combination Meter and eliminates the need to register each key.

  • Page 60: The Registration Number Read

    Electrical Systems Operation & Diagnosis Module (602) The registration number read Immobilizer Key Id deletion Immobilizer Key ID Deletion The Registration Number Read The display will indicate the number of registered This process is used when replacing lost or keys but will not indicate if the vehicle is damaged keys.

  • Page 61: Remote Control Engine Starter Registration

    Electrical Systems Operation & Diagnosis Module (602) Only 4 keys (plus RES) can be registered to the BIU. Deletion Exit Follow each instruction on the screen until the Immobilizer menu is displayed. Erasing The Registration remote Control engine Starter This screen will be displayed as the BIU is...
  • Page 62 Electrical Systems Operation & Diagnosis Module (602) Start Registration This process should be utilized when installing RES to the vehicle or when replacing the BIU. Registration Successful Follow each instruction on the screen until the Immobilizer menu is displayed. June 2013...
  • Page 63 Electrical Systems Operation & Diagnosis Module (602) Exit This screen indicates the RES was correctly registered. note: If a door of the vehicle is opened during reS operation, the reS turns the vehicle off and generates the following dTCs. These dTCs appear only as past codes.

  • Page 64: Keyless Entry

    Electrical Systems Operation & Diagnosis Module (602) Keyless Entry Function of Keyless Entry System Keyless Transmitter 2011 Forester TPMS and Keyless Entry Control Unit Function Function method Action on a vehicle Answer back The hazard flasher blinks once Locking the doors Press the Lock button once.

  • Page 65: How To Register The Transmitter

    Bag (ID Number) Open Transmitter 2) Connect the Subaru Select Monitor System Selection Menu (SSMIII) to the vehicle. 3) Turn the ignition switch to the ON position.
  • Page 66 Electrical Systems Operation & Diagnosis Module (602) ID Confirmation INTEG. UNIT Mode Failure Diag. ID Complete 6) Confirm the displayed number with the number recorded in step 1. ID Input 7) Press “yes” to enter another transmitter code. Press “no” to end the procedure.

  • Page 67: Security System

    Electrical Systems Operation & Diagnosis Module (602) Security System The security system for the 2005 and newer Legacy vehicles is controlled by the BIU. The security system and its chosen operating characteristics must be set and adjusted with the SSMIII.
  • Page 68 Electrical Systems Operation & Diagnosis Module (602) Answer-Back Buzzer Setup Impact Sensor Setup Sensitivity is adjustable on a scale of 1 to 10 with 5 being the setting from the factory. The smaller number is, the more sensitive the sensor becomes.

  • Page 69: Remote Engine Start System (Res)

    Impreza 2008 and Forester 2009 are the first year of reS for those models. All 2007 Subaru B9 Tribeca and Legacy models are pre-wired for a new Remote Starter accessory (Available for port or dealer installation). This accessory includes an additional wireless key fob that can start/stop the engine.
  • Page 70 Electrical Systems Operation & Diagnosis Module (602) Momentary Programming Button 4. Release the momentary programming button. 5. Press and release the momentary programming button. The vehicle’s horn will honk (4) times. 6. Press and release the vehicle’s brake pedal (1) time. The horn will honk (1) time to indicate that the system has entered tachometer idle speed programming mode.
  • Page 71 Electrical Systems Operation & Diagnosis Module (602) Turning Your Vehicle Off Press and hold the START (key icon) button again to turn the vehicle off. If the vehicle is left running the remote start system will allow the vehicle to run for a total of 15 minutes and then automatically turn off.
  • Page 72 Electrical Systems Operation & Diagnosis Module (602) Remote (RES) Transmitter Programming Mode 1. Open the driver’s door (the driver’s door must remain opened throughout the entire process). Remote Transmitter 2. Insert the ignition key into the vehicle’s ignition cylinder and turn to the ON or Run position.
  • Page 73 Electrical Systems Operation & Diagnosis Module (602) Immobilizer Interface Location Immobilizer Interface Software Card & Res Control Unit Inside Res Control Unit, Under Software Card noTe: IF THe BIu IS repLACed ALL KeyS, SoFTwAre CArd And ImmoBILIzer BoX oF THe reS muST Be repLACed.
  • Page 74 Electrical Systems Operation & Diagnosis Module (602) NOTES: June 2013...

  • Page 75: Anti-Grind

    Electrical Systems Operation & Diagnosis Module (602) The RES (Remote Engine Start) controls and provides the following features. • Starter motor operation • Anti grind • Power supply to the Acc circuit • Power supply to IGN 1 and IGN 2 circuit •...

  • Page 76: Starter Motor Operation

    Electrical Systems Operation & Diagnosis Module (602) Starter motor operation The RES cranking relay delivers power to the starter solenoid during RES operation. The relay is deactivated when the engine speed signal from the ECM exceeds cranking speed. RES Ignition Switch...

  • Page 77: Accessory Power Supply

    Electrical Systems Operation & Diagnosis Module (602) Accessory power Supply Two relays are used to deliver the amperage that may be required. The accessory circuit power supply can be traced on STIS (Service Manual) Currently the fuse labeling in the RES control unit marked HVAC 1 and HVAC 2 protect the RES accessory power supply circuits and Relays.

  • Page 78: Res Diagnostics

    Electrical Systems Operation & Diagnosis Module (602) RES Diagnostics Prior to beginning the trouble shooting procedure below, verify the following: 1. The vehicle’s battery is fully charged. 2. All remote engine start harness connections are secure. 3. Please have a copy of the remote engine start installation and owner’s instructions for reference.
  • Page 79 Electrical Systems Operation & Diagnosis Module (602) Symptom Check The vehicle’s perimeter A) Was the driver’s door unlocked Replace the remote start control security system triggers using the remote keyless entry module. when the door is opened transmitter? The perimeter security...
  • Page 80 Electrical Systems Operation & Diagnosis Module (602) Subaru Remote Engine Start Troubleshooting Guide Operational Conditions Symptom Check 14 The vehicle’s power win- The remote engine start system dows do not operate while is equipped with a power window the vehicle is operating by...

  • Page 81: 2010 And Newer Legacy

    Electrical Systems Operation & Diagnosis Module (602) 2010 and Newer Legacy Key in Trunk Cylinder A key cylinder is provided for manual operation. TRUNK SWITCH NOTES: An electrical switch on the lower left dash panel opens the trunk. This feature turns off at a vehicle speed of greater than 5 miles per hour.

  • Page 82: Other 2010My And Newer Electrical Advancements

    Electrical Systems Operation & Diagnosis Module (602) Other 2010MY and Newer Electrical Advancements Inspection Mode Fuse Location Driver Window Switch The driver side door window is now equipped with an Auto Up feature that must initialized be each time power is removed from the window circuit or the battery is disconnected.

  • Page 83: Multi-Function-Display (Mfd) (2014 Forester)

    Multi-Function Display Check Engine Display screens of the MFD are controlled through the Info/Set controls located on the steering wheel. noTe: The Subaru Service manual describes the mFd display screen as a “TFT” (Thin Film Transistor). Multi-Function Display Buttons June 2013...
  • Page 84 Electrical Systems Operation & Diagnosis Module (602) Fuel Remaining Fuel Economy Analog Fuel Digital Gauge 2 Engine Gauges The digital fuel usage display updates once per minute and overwrites itself after 30 minutes (Idling time is included). noTe: The fuel economy screen digital can be customized by the driver for 30, 60, or 120 minutes.
  • Page 85 Electrical Systems Operation & Diagnosis Module (602) A Traction/X-MODE™ screen provides details of ABS, VDC, Traction Control, and X-MODE™ operation. HDC Off with X-MODE Customization of the MFD can be accessed while the vehicle is stationary. Setting Screen Date Car History...
  • Page 86 Electrical Systems Operation & Diagnosis Module (602) The EyeSight™ display of the MFD provides an analog speedometer, leading vehicle indicator, set speed indicator for adaptive cruise control and a functioning brake light indicator. noTe: The brake light indicator only confirms the existence of the output signal of the eyeSight™...

  • Page 87: Power Rear Gate (Prg) (2014 Forester)

    Electrical Systems Operation & Diagnosis Module (602) Power Rear Gate (PRG) (2014 Forester) The 2014 Forester introduces the new Rear Power Gate (PRG). The PRG provides an electric powered opening and closing feature that is controlled through a touch switch on the rear gate, instrument panel, keyless access remote, or the mechanical keyless entry key.

  • Page 88: Operation Mode

    Electrical Systems Operation & Diagnosis Module (602) The Keyless Access and Push Button Start Remote key (KAC) can be used to open and close the PRG if the ignition is in the off position. Press the PRG switch for more than 2 seconds to toggle between the open and close operation.

  • Page 89: Prg Components And Operation

    LAN/CAN for operation and diagnostics are through a LIN line. Communications with the Subaru Select Monitor are very slow due to the limited speeds of the LIN line. Select only the P.I.D.s (2 or 3 maximum) required to perform diagnostics for a current condition.
  • Page 90 Electrical Systems Operation & Diagnosis Module (602) The PRG drive unit consists of a motor, drive gear, driven gear, half stop solenoid, half stop solenoid switch, pulse or rotation sensor, and an electric clutch. When the driven gear turns, a threaded drive block pushes or pulls the connecting rod that opens or closes the PRG.
  • Page 91 Electrical Systems Operation & Diagnosis Module (602) A manual release lever is provided to disengage the half stop mechanism in the event of mechanical or electrical malfunction. WARNING: The PRG may operate if the lever is activated, stay away from moving parts.
  • Page 92 Electrical Systems Operation & Diagnosis Module (602) The motor direction is controlled by changing the polarity of the positive and ground supply through the PRG control unit. A duty ratio of 40 to 70 % controls the opening of the PRG and 60 to 80% duty closes the PRG.
  • Page 93 Electrical Systems Operation & Diagnosis Module (602) The drive and driven gears of the motor drive assembly and the PRG drive unit mesh together to transfer the opening or closing force needed to control the PRG. Mechanical output of the motor to the coupling gear is controlled with an electric clutch.
  • Page 94 Electrical Systems Operation & Diagnosis Module (602) If the rear gate is blocked from opening, a slipping sound will be heard from the PRG drive unit. Continued attempts to operate the PRG in this condition will damage the clutch. Clutch Coil and Hub An electro-magnetic coil is located under the output shaft coupling surface.
  • Page 95 The output can be viewed on the Subaru Select Monitor as “Pulse Count” . Pulse Count Sensor Sensor A and B The two signals are inputs to the PRG control unit.
  • Page 96 Electrical Systems Operation & Diagnosis Module (602) The PRG Auto Closer is located in place of the conventional rear gate latch assembly. The PRG Auto Closer is equipped with the following components: - Rear gate latch - Gate latch motor...

  • Page 97: Prg Auto Closer Parked

    Electrical Systems Operation & Diagnosis Module (602) prg Auto Closer parked During normal operation with the PRG closed, the arm of the sector switch is resting on the white plastic detent of the latch assembly driven gear (Sector gear). This represents an off or closed position for the PRG control unit.

  • Page 98: Prg Auto Closer Opening

    Electrical Systems Operation & Diagnosis Module (602) prg Auto Closer opening When the PRG power gate auto closer assembly is commanded to open, the driven gear will be turning counter-clockwise (as viewed in image 193). The gear will move as far as possible, creating a spike in amperage.
  • Page 99 Electrical Systems Operation & Diagnosis Module (602) Courtesy and Latch Switch Sector Switch Arm Courtesy and Latch Switch Operation Position 1: Auto Closer at parked position. Position 2: Auto Closer beginning to move in a clockwise direction. Sector switch has moved off of the park position (ground removed).
  • Page 100 Electrical Systems Operation & Diagnosis Module (602) PRG Auto Closer Schematic June 2013...

  • Page 101: Touch Sensors

    Electrical Systems Operation & Diagnosis Module (602) Touch Sensors A pinch or Touch Sensor is installed on the left and right inner edge of the rear gate. If either sensor is compressed during closing, the PRG automatically reverses and moves to the open position.
  • Page 102 Electrical Systems Operation & Diagnosis Module (602) R423 R423 POWER REAR GATE CM 11 12 13 14 16 17 18 19 D150 D155 D155 D151 D156 D151 D150 SL-02256 Touch Sensor Schematic NOTES: June 2013...

  • Page 103: Memory Height" Learning Procedure

    Electrical Systems Operation & Diagnosis Module (602) “memory Height” Learning procedure noTe: The ignition should be off and the prg should be closed. Push the “Memory Height SW” on the instrument panel in so that it is at its lowest position.
  • Page 104 Electrical Systems Operation & Diagnosis Module (602) Gate Opener Switch Set the PRG to manual mode by pushing the “Opener SW” on the gate for more than 0.8 seconds. noTe: Immediately open the prg so that the auto close function does not engage.

  • Page 105: Electrical

    Electrical Systems Operation & Diagnosis Module (602) Electrical The 2014 Forester is equipped with a 130 Amp alternator that utilizes a duty ratio to control charging output (similar to the 2012 Impreza) and a 55D23L battery. The alternator is equipped with a de-coupler (one-way clutch) pulley that is designed to suppress auxiliary belt resonance produced as the engine torque fluctuates during driving.
  • Page 106 Back Up Power Supply Fuses Delivery Mode Fuse Slot noTe: mechanical key vehicles are equipped with immobilizer type B. Keyless access and push button start vehicles are equipped with immobilizer type d. Consult the Subaru Service manual on STIS for immobilizer. NOTES: June 2013...
  • Page 107 Electrical Systems Operation & Diagnosis Module (602) The amp clamp and battery temperature sensor are combined into one unit and are located on the positive battery post connector. AMP Clamp Positive Battery Post The Controller Area Network (CAN) of the 2014 Forester uses CAN diagnostics for all members of the CAN.
  • Page 108 B259 B134 IMPACT SENSOR B367 B246 B331 Partial CAN Schematic The Subaru Service Manual wiring schematics for the 2014 Forester have been enhanced. The schematics are now in color and use new terminal symbols. CONNECTOR R167 i102 Male Female Connector Symbol...
  • Page 109 34 35 28 29 30 31 32 33 34 35 WI-40835 WI-36279 2013 Legacy Subaru Service Manual 2014 Forester Subaru Service Manual Comparing Different Years of Subaru Service Manual Diagrams Horn System WIRING SYSTEM LIST OF CONNECTORS B280 B281 B371...

  • Page 110: 2014 Combination Meter

    (602) 2014 Combination Meter The combination meter of the 2014 Forester can be diagnosed with the Subaru Select Monitor III. Current data display, DTCs, Customization and Work Support are provided to adjust (applicable items only) and test all gauges and lights.
  • Page 111 Electrical Systems Operation & Diagnosis Module (602) Combination Meter Work Support Combination Meter Work Support Menu Available Visual And Audible Checks Combination Meter Unit Customization Available Items For Customization or Checking June 2013...
  • Page 112 Electrical Systems Operation & Diagnosis Module (602) The Multi-function display has an available “Work Support” function which will only display the ECU (MFD) part number and software version. System Selection Menu Multi-function Display Menu Visual and audible checks can only be performed from the “Combination Work” support.
  • Page 113 Electrical Systems Operation & Diagnosis Module (602) 2. Next, select “System Operation Check Mode” . Combination Meter Work Support Combination Meter System Work Support Menu Select the MFD output check and navigate to the desired check. Available Visual And Audible Checks...
  • Page 114 Electrical Systems Operation & Diagnosis Module (602) The combination meter and the MFD are both connected to the High Speed CAN. Each part obtains the information needed to operate from the CAN but the communications between each part are sent and received through a UART circuit.

  • Page 115: Instrumentation/Driver Information

    Electrical Systems Operation & Diagnosis Module (602) Instrumentation/driver Information Item Content Control Module communication Bus “A” Off. Detected when CAN line abnormality is U0073 detected. Lost communication with ECM/PCM “A” . Detected when CAN data from the engine U0100 control module (ECM) does not arrive.

  • Page 116: Service Bulletins

    Electrical Systems Operation & Diagnosis Module (602) Service Bulletins **Be advised this may not be all the Subaru Service Bulletins pertaining to electrical systems. **go to Subaru Tech Info System (STIS) for all Subaru Service Bulletins. Date Title Subject 07-50-93R...
  • Page 117 Electrical Systems Operation & Diagnosis Module (602) Date Title Subject 07-61-07 04/05/07 2005MY Legacy and Outback Vehicles Modified Front Seat Cushion Equipped with All Weather Package Heater 07-62-07 01/17/08 All Models Dark Current or Excessive Battery Draw 15-126-07 02/13/08 All Models...

  • Page 118: Techtips

    Electrical Systems Operation & Diagnosis Module (602) TechTIPS **Be advised this may not be all the Subaru TechTIPS pertaining to electrical systems. **go to Subaru Tech Info System (STIS) for all Subaru TechTIpS. Date Subject 01/00 2000MY Legacy Blows Fuse #5...
  • Page 119 Electrical Systems Operation & Diagnosis Module (602) Date Subject 09/07 2008MY Impreza Headlight Switch Operation 01/08 2008 Impreza Stop Light Switch C0074 and 0054 05/08 BIU Replacement and Keys 06/08 2008 Impreza Data Link connector Color Change 06/08 Legacy & Outback Door Switch (Nov 2004 production & after)
  • Page 120 Electrical Systems Operation & Diagnosis Module (602) Date Subject Vehicles Equipped with EyeSight BRZ Trunk Release Operation 06/12 Impreza Glove Box Light 2013MY BRZ Antitheft Security / Alarm System Activation 2013 BRZMY Auto Up/Down Window Feature 09/12 Push Button Start Vehicles Equipped with Remote Engine Start...
  • Page 121 Electrical Systems Operation & Diagnosis Module (602) June 2013...
  • Page 122 Electrical Systems Operation & Diagnosis Module (602) Supplemental Information June 2013...

  • Page 123: Supplemental Information

    MAP SCREEN a door that protects the front. The Subaru Navigation System has been designed as an integral part of the vehicle from the beginning of vehicle design. This has provided a means of enhancing two way communications between the vehicle operator or navigator and onboard vehicle systems.
  • Page 124 Navigation and on board features. vehicle information to the driver and front seat passenger. The Subaru Navigation system operates from software contained in either of two DVD Roms. The two DVD Roms are described as East or...

  • Page 125: Navigation Operation

    Electrical Systems Operation & Diagnosis Module (602) navigation operation map Screen Pressing the map button will display the map screen. SCHEMATIC MAP SCREEN Pressing the menu button on either the Navigation Display or the remote button will display: NAVIGATION MENU •...

  • Page 126: Tribeca Rear Entertainment System

    Electrical Systems Operation & Diagnosis Module (602) Tribeca rear entertainment System NAVIGATION DISPLAY The driver and front seat passenger can view HEADLINER INTERIOR the rear entertainment system through the The monitor and player are mounted in the Navigation Display provided the vehicle is not roof to offer visibility to all 2nd and 3rd seat in motion and the parking brake is set.
  • Page 127 Electrical Systems Operation & Diagnosis Module (602) INFRARED Sound from the rear entertainment system is projected to the rear of the vehicle through an infrared LED assemble (The headphones must be in the line of sight of the monitor and player assembly)

  • Page 128: Vehicle Information

    Electrical Systems Operation & Diagnosis Module (602) vehicle Information If the ignition is turned off while the rear entertainment system is being used for DVD viewing, the DVD will restart at the stopping point once the ignition is turned back on, however, the remote control must be used to activate the monitor by pressing the DVD button.

  • Page 129: Legacy Audio System (2005-2009)

    Electrical Systems Operation & Diagnosis Module (602) Legacy Audio System (2005- 2009) REAR VIEW OF CONTROL PANEL This panel carries the desired input signals from the driver to the audio unit. BEAUTY SHOT The 2005~2009 Legacy/Outback models are available with one of 3 types of audio packages.

  • Page 130: Satellite Audio Controls

    Electrical Systems Operation & Diagnosis Module (602) Satellite Audio Controls AUDIO WIRING Control Total Circuit resistance Mute 22.3 Volume - 88.5 Volume+ 192.2 Mode 335.5 Seek Seek 1.142K End of Circuit Resistance 4.68K The satellite audio controls located on the steering wheel pad function by varying the resistance between the 2 wires that lead from the radio chassis to the satellite audio control assemble.

  • Page 131: 2008 Navigation Impreza

    The navigation system built by Kenwood contains the display, controls, audio unit and navigation computer. The system will display the Subaru logo at each engine start and then proceed to the start up screen. INFO DISPLAY MAIN SCREEN June 2013...
  • Page 132 Electrical Systems Operation & Diagnosis Module (602) SET FUNCTIONS CD / DVD DRAWER Changing of the CDs is accomplished by pressing the DVD/CD button. This will tilt the display almost 90 degrees to allow for installing or removing music CDs or DVDs. (DVDs will only display while the vehicle is not moving.)

  • Page 133: Navigation Diagnosis (2008)

    Electrical Systems Operation & Diagnosis Module (602) AUDIO OFF SCREEN Next press the {Audio/Sat} button and turn the audio off. MAP DVD DRAWER noTe: ALL oTHer FunCTIonS muST ALSo Be oFF. Next tap the screen on the LEFT side and then the RIGHT.
  • Page 134 Electrical Systems Operation & Diagnosis Module (602) DEALER DIAG MENU SCREEN VEHICLE SIGNAL INFO. SCREEN The Dealer Diagnostic Menu will now activate. Pressing Menu will take you back to the Dealer Diagnostic Menu. Next press {Vehicle Signal Info.} Press {Connection Info.}...

  • Page 135: 2010 Navigation System

    Electrical Systems Operation & Diagnosis Module (602) 2010 navigation System EJECT NAVIGATION DVD CONTROL The eject control is located under the cover and AUDIO/NAVIGATION SYSTEM to the right of the drive. The 2010 Audio/Navigation System is now wired to the BIU using Universal Asynchronous...

  • Page 136: 2012 Audio And Navigation

    Electrical Systems Operation & Diagnosis Module (602) 2012 Audio and navigation NAVIGATION SYSTEM AND RADIO ON BENCH REAR VIEW SD MEMORY CARD FUJITSU-TEN UNIT Seven (7) connectors One (1) ground connector Insert SD Card with the label facing the left side.

  • Page 137: 2013 Legacy/Outback

    (a) for 3 seconds or more, SD Card Location or turning the ignition OFF . note: See Subaru owners manual for details. Note: Ejecting the SD Card without following proper procedures may corrupt SD Card.

  • Page 138: Combination Meters

    Electrical Systems Operation & Diagnosis Module (602) Combination Meters (Legacy 2005) COMBINATION METER (Example) Turning the ignition key to the run position starts the light check cycle and activates the sweep of all gauge needles. Pushing the Trip Meter stalk with the ignition off will illuminate the Trip Meter display and activate the Fuel Gauge to show the actual fuel level.
  • Page 139 Electrical Systems Operation & Diagnosis Module (602) Push and hold the Trip Meter stalk for 2 seconds until the display changes to “I-off” . Follow the same procedure to turn the gauge sweep and sequential illumination back on. In each case the current status will be displayed.
  • Page 140 Electrical Systems Operation & Diagnosis Module (602) GAUGE SWEEP MANUAL ADVANCE While the gauges are sweeping, push the Trip Pushing Trip Meter Stalk 1 time will activate the Meter stalk 2 times. The D check will now begin. Trip Meter to display trouble codes. Push the Trip All lights, gauges, beeps and displays will turn Meter Stalk to advance the code display.

  • Page 141: Subaru Tribeca Combination Meter

    Electrical Systems Operation & Diagnosis Module (602) Subaru Tribeca Combination DTCs can be viewed on the Trip Meter by following the steps above but push the Trip Meter meter 4 times in each step instead of 3 times. Toggle through the DTCs by pressing the Trip Meter stalk.
  • Page 142 Electrical Systems Operation & Diagnosis Module (602) NATURALLY ASPIRATED MODEL COMBINATION METER 2008 and newer Impreza models are equipped with a sequential sweep and WRX models are equipped with sequential illumination. The combination meter has an available D check proce- dure.

  • Page 143: 2012 Impreza Combination Meter

    Electrical Systems Operation & Diagnosis Module (602) 2012 Impreza Combination meter The Combination Meter checks and customizing features can now be checked and set with the SSMIII. Previous models required manipulation of the headlight switch and trip-meter stalks. COMBINATION METER...

  • Page 144: Rear Vision Camera

    Electrical Systems Operation & Diagnosis Module (602) Rear Vision Camera REAR VISION CAMERA ON BACK GATE REAR VIEW IMAGE ON LCD SCREEN A rear vision camera is now standard on all 2007 and newer navigation-equipped models. The system displays an image of behind the vehicle with reference lines to aid in backing up/parking.
  • Page 145 Electrical Systems Operation & Diagnosis Module (602) REAR VIEW CAMERA ELECTRICAL SCHEMATIC June 2013...
  • Page 146 Electrical Systems Operation & Diagnosis Module (602) June 2013...

  • Page 147: Supplemental Information For Keyless Entry Registration Of Newer Vehicles

    2012 to 2013 Impreza (Immobilizer Type B) 2012 to 2013 Impreza registration of Keyless Transmitter with Subaru Select monitor A maximum of four keyless transmitters can be registered for each individual vehicle. When replacing or adding the keyless transmitter, new registration of each transmitter is necessary.
  • Page 148 Electrical Systems Operation & Diagnosis Module (602) Buzzer sounds once for each key registered. Repeat the registration as many times as desired up to maximum (4). Press “OK” when complete. June 2013...

  • Page 149: Brz Keyless Entry System {Mechanical Key

    Electrical Systems Operation & Diagnosis Module (602) Brz Keyless entry System {mechanical Key} Key registration BRZ Mechanical Key To register a new keyless Id while keeping existing registered codes. A maximum of six keyless transmitters can be registered for each individual vehicle.
  • Page 150 Electrical Systems Operation & Diagnosis Module (602) Turn ignition to on Start means to turn ignition on. Press “ON” . Press lock and unlock at same time >.8 seconds. Press lock or unlock to confirm (Beep) Repeat the registration as many times as desired up to maximum (6).

  • Page 151: Brz With Keyless Access And Push Button Start (Kac)

    Electrical Systems Operation & Diagnosis Module (602) Brz with Keyless Access and push Button Start (KAC) BRZ (KAC) Key registration (Additional key Id registration) A maximum of seven keyless transmitters can be registered for each individual vehicle. Prepare all electrical key transmitter sub-assemblies to be registered and place them outside vehicle.
  • Page 152 Electrical Systems Operation & Diagnosis Module (602) 10. Press “Key Registration” . 11. Press “Next” . 12. Press “Next” . June 2013...
  • Page 153 Electrical Systems Operation & Diagnosis Module (602) 13. Key Code Registration Confirm: Hold a registered key to the Start Switch (SW). 14. Verification of unregistered key: Hold the unregistered key to the Start Switch (SW). 15. Confirm a Beep after this step.
  • Page 154 Electrical Systems Operation & Diagnosis Module (602) note: remove each key from vehicle as it is registered before bringing the next key to be registered into the vehicle. repeat the registration as many time as desired up to the maximum (7).

  • Page 155: Legacy And Outback Keyless Access And Push Button Start (Kac)

    Electrical Systems Operation & Diagnosis Module (602) Legacy and outback Keyless Access and push Button Start (KAC) Legacy / Outback Key (KAC) Key registration (Additional key Id registration) A maximum of seven keyless transmitters can be registered for each individual vehicle.
  • Page 156 Electrical Systems Operation & Diagnosis Module (602) 10. Press “Smart Immobilizer Registration” . 11. Press “OK” . June 2013...
  • Page 157 Electrical Systems Operation & Diagnosis Module (602) 12. Key Code Registration Confirm: Hold a registered key to the Start Switch (SW). 13. Verification of unregistered key: Hold the unregistered key to the Start Switch (SW). June 2013...
  • Page 158 Electrical Systems Operation & Diagnosis Module (602) note: Keep key inside of vehicle for 10 seconds before proceeding to next key. remove each key from vehicle as it is registered before bringing the next key to be registered into the vehicle.
  • Page 159 Electrical Systems Operation & Diagnosis Module (602) 16. Press “Ok” . June 2013...
  • Page 162 MSA5P0135C...

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