Subaru LEGACY 2004 Service Manual
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Subaru LEGACY 2004 Service Manual

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2004 LEGACY SERVICE MANUAL

ENGINE SECTION 3

This service manual has been prepared
to provide SUBARU service personnel
with the necessary information and data
for the correct maintenance and repair
of SUBARU vehicles.
This manual includes the procedures
for maintenance, disassembling, reas-
sembling, inspection and adjustment of
components and diagnostics for guid-
ance of experienced mechanics.
Please peruse and utilize this manual
fully to ensure complete repair work for
satisfying our customers by keeping
their vehicle in optimum condition.
When replacement of parts during
repair work is needed, be sure to use
SUBARU genuine parts.
All information, illustration and specifi-
cations contained in this manual are
based on the latest product information
available at the time of publication
approval.
FUJI HEAVY INDUSTRIES LTD.
QUICK REFERENCE INDEX
FUEL INJECTION (FUEL SYSTEMS)
EMISSION CONTROL
(AUX. EMISSION CONTROL DEVICES)
INTAKE (INDUCTION)
MECHANICAL
EXHAUST
COOLING
LUBRICATION
SPEED CONTROL SYSTEMS
IGNITION
STARTING/CHARGING SYSTEMS
ENGINE (DIAGNOSTICS)
FU(H6DO)
EC(H6DO)
IN(H6DO)
ME(H6DO)
EX(H6DO)
CO(H6DO)
LU(H6DO)
SP(H6DO)
IG(H6DO)
SC(H6DO)
EN(H6DO)(diag)
G2320GE4

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Summary of Contents for Subaru LEGACY 2004

  • Page 1: Engine Section

    EC(H6DO) (AUX. EMISSION CONTROL DEVICES) INTAKE (INDUCTION) IN(H6DO) MECHANICAL ME(H6DO) This service manual has been prepared to provide SUBARU service personnel EXHAUST EX(H6DO) with the necessary information and data for the correct maintenance and repair of SUBARU vehicles. COOLING CO(H6DO)

  • Page 2: Table Of Contents

    Electrical Component Location ..............8 Engine Control Module (ECM) I/O Signal ..........17 Engine Condition Data ................21 Data Link Connector .................22 OBD-II General Scan Tool ................23 Subaru Select Monitor................25 Read Diagnostic Trouble Code (DTC) ............32 Inspection Mode..................33 Drive Cycle....................38 Clear Memory Mode..................40 Compulsory Valve Operation Check Mode ..........41...

  • Page 3: Basic Diagnostic Procedure

    Repair the related 1) Turn the ignition switch to OFF. aru Select Monitor? Repair the trouble parts. 2) Connect the Subaru Select Monitor to data cause. <Ref. to NOTE: link connector. EN(H6DO)(diag)- 3) Turn the ignition switch to ON, and the Sub-...

  • Page 4: Check List For Interview

    Check List for Interview ENGINE (DIAGNOSTICS) 2. Check List for Interview A: CHECK 1. CHECK LIST No. 1 Check the following items when problem has occurred. NOTE: Use copies of this page for interviewing customers. Customer’s name Engine No. Date of sale Fuel brand Date of repair Odometer reading...
  • Page 5 Check List for Interview ENGINE (DIAGNOSTICS) 2. CHECK LIST No. 2 Check the following items about the vehicle’s state when malfunction indicator light turns on. NOTE: Use copies of this page for interviewing customers. a) Other warning lights or indicators turn on. ❏ Yes / ❏ No ❏...

  • Page 6: General Description

    General Description ENGINE (DIAGNOSTICS) 3. General Description 8) Use ECM mounting stud bolts as the grounding point to chassis when measuring voltage and resis- A: CAUTION tance inside the passenger compartment. 1) Airbag system wiring harness is routed near the ECM, main relay and fuel pump relay.

  • Page 7: Engine Section

    General Description ENGINE (DIAGNOSTICS) • The antenna feeder must be placed as far 2. ENGINE GROUND apart as possible from the ECM and MFI har- Make sure the engine grounding terminal is proper- ness. ly connected to the engine. • Carefully adjust the antenna for correct matching.
  • Page 8 When trou- of operation. In actual operation, the injection quan- bleshooting OBD-II vehicles, connect Subaru Se- tity is determined by the duration of an electric lect Monitor or the OBD-II general scan tool to the pulse applied to the fuel injector and this permits vehicle.

  • Page 9: Electrical Component Location

    Electrical Component Location ENGINE (DIAGNOSTICS) 4. Electrical Component Location A: LOCATION 1. ENGINE • Control module • LHD model EN-02474 • RHD model EN-02475 Engine control module (ECM) Test mode connector Data link connector Malfunction indicator light EN(H6DO)(diag)-8...
  • Page 10 Electrical Component Location ENGINE (DIAGNOSTICS) EN-01966 EN-01147 EN-02414 AT-01877 EN(H6DO)(diag)-9...
  • Page 11 Electrical Component Location ENGINE (DIAGNOSTICS) • Sensor (6) (8) EN-02478 Mass air flow and intake air tem- Engine coolant temperature sen- Camshaft position sensor perature sensor Crankshaft position sensor Manifold absolute pressure sensor Electronic throttle control Oil temperature sensor Knock sensor EN(H6DO)(diag)-10...

  • Page 12: En(H6Do)(Diag)

    Electrical Component Location ENGINE (DIAGNOSTICS) EN-02479 EN-02535 EN-02536 EN-00895 EN-02537 EN-00897 EN-00899 EN-02538 EN(H6DO)(diag)-11...
  • Page 13 Electrical Component Location ENGINE (DIAGNOSTICS) EN-02480 Front oxygen (A/F) sensor LH Rear oxygen sensor RH Rear catalytic converter Front oxygen (A/F) sensor RH Front catalytic converter LH Rear oxygen sensor LH Front catalytic converter RH EN-02539 EN-02540 EN-02542 EN-02541 EN(H6DO)(diag)-12...
  • Page 14 Electrical Component Location ENGINE (DIAGNOSTICS) EN-02543 • Solenoid valve, actuator, emission control system parts and ignition system parts EN-02481 Purge control solenoid valve Oil flow control solenoid valve Variable valve lift diagnosis oil pressure switch EGR valve Oil switching solenoid valve Ignition coil &...
  • Page 15 Electrical Component Location ENGINE (DIAGNOSTICS) EN-02482 EN-02483 EN-02484 EN-02485 EN-02486 EN(H6DO)(diag)-14...
  • Page 16 Electrical Component Location ENGINE (DIAGNOSTICS) • LHD model EN-02487 • RHD model EN-02488 Inhibitor switch Fuel pump relay Starter Fuel pump Electronic throttle control relay Main relay Radiator fan relay EN(H6DO)(diag)-15...
  • Page 17 Electrical Component Location ENGINE (DIAGNOSTICS) EN-02093 EN-00178 EN-02544 EN-02489 EN-02490 EN(H6DO)(diag)-16...

  • Page 18: Engine Control Module (Ecm) I/O Signal

    Engine Control Module (ECM) I/O Signal ENGINE (DIAGNOSTICS) 5. Engine Control Module (ECM) I/O Signal A: ELECTRICAL SPECIFICATION B135 B136 B137 B134 EN-01812 Signal (V) Connector Terminal Description Reference Ignition SW ON Engine ON (engine OFF) (idling) −7 — +7 Signal (+) B135 Waveform...
  • Page 19 Engine Control Module (ECM) I/O Signal ENGINE (DIAGNOSTICS) Signal (V) Connector Terminal Description Reference Ignition SW ON Engine ON (engine OFF) (idling) ON: 0 ON: 0 Starter relay B135 — OFF: 10 — 13 OFF: 13 — 14 ON: 10 — 13 ON: 13 —...
  • Page 20 Engine Control Module (ECM) I/O Signal ENGINE (DIAGNOSTICS) Signal (V) Connector Terminal Description Reference Ignition SW ON Engine ON (engine OFF) (idling) Signal B136 0.74 0.3 — 4.5 — Air flow sensor Shield B136 — Ground B136 — Intake air temperature intake air tempera- B136 3.15 —...
  • Page 21 Engine Control Module (ECM) I/O Signal ENGINE (DIAGNOSTICS) Signal (V) Connector Terminal Description Reference Ignition SW ON Engine ON (engine OFF) (idling) Oil flow con- Signal (+) B134 — trol solenoid Signal (−) B134 — valve RH Oil flow con- Signal (+) B134 —...

  • Page 22: Engine Condition Data

    Engine Condition Data ENGINE (DIAGNOSTICS) 6. Engine Condition Data A: ELECTRICAL SPECIFICATION Remarks Specification 1.6 — 2.9 (%): Idling Engine load 6.4 — 12.8 (%): 2,500 rpm racing Measuring condition: • After engine is warmed-up. • Gear position is in “N” or “P” range. •...

  • Page 23: Data Link Connector

    This connector is used for Subaru Select Monitor. CAUTION: Do not connect any scan tools other than the Subaru Select Monitor and the OBD-II general scan tools, because the circuit for the Subaru Select Monitor may be damaged. 9 10 11 12 13 EN-00037 Terminal No.

  • Page 24: Obd-Ii General Scan Tool

    OBD-II General Scan Tool ENGINE (DIAGNOSTICS) 8. OBD-II General Scan Tool 3) Using the OBD-II general scan tool, call up DTC and freeze frame data. A: OPERATION OBD-II general scan tool functions consist of: (1) MODE $01: Current powertrain diagnostic 1.
  • Page 25 OBD-II General Scan Tool ENGINE (DIAGNOSTICS) 3. MODE $02 (POWERTRAIN FREEZE FRAME DATA) Refers to data denoting the operating condition when trouble is sensed by the on-board diagnosis system. A list of the support data and PID (Parameter Identification) codes are shown in the following table. Data Unit of measure DTC that caused CARB required freeze frame data storage...

  • Page 26: Subaru Select Monitor

    Select Monitor and OBD-II general scan tool. 5) Turn ignition switch to ON (engine OFF) and turn 1. HOW TO USE SUBARU SELECT MONI- Subaru Select Monitor switch to ON. 1) Prepare the Subaru Select Monitor kit. <Ref. to EN(H6DO)(diag)-7, PREPARATION TOOL, Gen- eral Description.> EN-00040...
  • Page 27 Subaru Select Monitor ENGINE (DIAGNOSTICS) 4. READ CURRENT DATA FOR ENGINE. (NORMAL MODE) 1) On the «Main Menu» display screen, select the {Each System Check} and press the [YES] key. 2) On the «System Selection Menu» display screen, select the {Engine} and press the [YES] key.
  • Page 28 Subaru Select Monitor ENGINE (DIAGNOSTICS) Unit of Remarks Display Note (at idling) measure A/F sensor current value Front oxygen (A/F) sensor current value 1 0.0 mA A/F sensor current value Front oxygen (A/F) sensor current value 2 0.0 mA A/F sensor resistance Ω...
  • Page 29 Subaru Select Monitor ENGINE (DIAGNOSTICS) Unit of Remarks Display Note (at idling) measure Air conditioning switch signal A/C SW — OFF input (when OFF) Steering wheel switch signal Steering wheel SW — Hi input Starter switch signal Starter SW —...
  • Page 30 Oxygen sensor #11 Oxygen sensor #11 Support Oxygen sensor #12 Oxygen sensor #12 Support A/F sensor #11 A/F sensor #11 — A/F sensor #11 A/F sensor #11 NOTE: For detailed operation procedures, refer to the SUBARU SELECT MONITOR OPERATION MANUAL. EN(H6DO)(diag)-29...
  • Page 31 Intake manifold absolute pressure signal Mani. Absolute Pressure mmHg, kPa, inHg or psi Engine speed signal Engine Speed Vehicle speed signal Vehicle Speed km/h or MPH NOTE: For detailed operation procedures, refer to the SUBARU SELECT MONITOR OPERATION MANUAL. EN(H6DO)(diag)-30...
  • Page 32 Body Int. Unit Data Yes/No Body integrated unit counter update Body Int. Unit Count Yes/No Cruise control cancel switch signal CC Cancel SW ON Input/OFF Input ON input NOTE: For detailed operation procedures, refer to the SUBARU SELECT MONITOR OPERATION MANUAL. EN(H6DO)(diag)-31...

  • Page 33: Read Diagnostic Trouble Code (Dtc)

    For details concerning DTCs, refer to the List of Di- agnostic Trouble Code (DTC). <Ref. 1. SUBARU SELECT MONITOR (NORMAL EN(H6DO)(diag)-66, List of Diagnostic Trouble MODE) Code (DTC).> 1) On the «Main Menu» display screen, select the NOTE: {Each System Check} and press the [YES] key.

  • Page 34: Inspection Mode

    Inspection Mode ENGINE (DIAGNOSTICS) 11.Inspection Mode A: PROCEDURE When performing the diagnose without the “List of Diagnostic Trouble Code (DTC)”, refer the item of drive cy- cle. <Ref. to EN(H6DO)(diag)-38, Drive Cycle.> Item On condition P0011 “A” Camshaft Position-Timing Over-Advanced or System Performance (Bank 1) —...
  • Page 35 Inspection Mode ENGINE (DIAGNOSTICS) Item On condition P0345 Camshaft Position Sensor “A” Circuit (Bank 2) — P0458 Evaporative Emission Control System Purge Control Valve Circuit Low — P0462 Fuel Level Sensor Circuit Low Input — P0463 Fuel Level Sensor Circuit High Input —...
  • Page 36 EN-00041 EN-02424 (A) Rigid racks 7) Connect the Subaru Select Monitor to data link (B) Free rollers connector located in the lower portion of the instru- 2. SUBARU SELECT MONITOR ment panel (on the driver’s side).
  • Page 37 Inspection Mode ENGINE (DIAGNOSTICS) 8) Turn ignition switch to ON (engine OFF) and turn 3) Connect the test mode connector (A) located at Subaru Select Monitor switch to ON. the lower portion of glove box. EN-00040 EN-02424 4) Connect the OBD-II general scan tool to its data...
  • Page 38 Inspection Mode ENGINE (DIAGNOSTICS) NOTE: • For detailed operation procedures, refer to the OBD-II General Scan Tool Operation Manual. • For details concerning DTCs, refer to the List of Diagnostic Trouble Code (DTC). <Ref. to EN(H6DO)(diag)-66, List of Diagnostic Trouble Code (DTC).> EN(H6DO)(diag)-37...

  • Page 39: Drive Cycle

    Drive Cycle ENGINE (DIAGNOSTICS) 12.Drive Cycle A: PROCEDURE For the troubleshooting, there are three driving patterns. By driving the vehicle with specified pattern, follow- ing trouble items could be diagnosed. After the repair of following trouble items, be sure to drive the vehicle with specified patterns to check the trouble was repaired correctly.
  • Page 40 Drive Cycle ENGINE (DIAGNOSTICS) 4. DRIVE THE VEHICLE WITH FOLLOWING DRIVE PATTERNS (60) 64 (40) EN-00842 Idle the engine for more than 10 Decelerate the vehicle to 64 km/h Stop the vehicle with throttle fully seconds. (40 MPH) with throttle fully closed. closed.

  • Page 41: Clear Memory Mode

    {Memory Clear} and press the [YES] key. 5) When the “Done” and “Turn Ignition Switch OFF” are shown on the display screen, turn the ignition switch to OFF and then Subaru Select Monitor switch to OFF. NOTE: • Initial diagnosis of electronic control throttle is performed after memory clearance.

  • Page 42: Compulsory Valve Operation Check Mode

    Compulsory Valve Operation Check Mode ENGINE (DIAGNOSTICS) 14.Compulsory Valve Operation 5) Connect the Subaru Select Monitor to data link connector located in the lower portion of the instru- Check Mode ment panel (on the driver’s side). A: OPERATION 1) Prepare the Subaru Select Monitor kit. <Ref. to EN(H6DO)(diag)-7, PREPARATION TOOL, Gen- eral Description.>...
  • Page 43 Pressure Switching Solenoid 1 Pressure Switching Solenoid 2 Supercharger Control Solenoid PCV Solenoid Vent Control Solenoid AAI Solenoid Atmospheric pressure switching solenoid Exhaust Bypass Valve Control Permit Flag • For detailed operation procedures, refer to the SUBARU SELECT MONITOR OPERATION MAN- UAL. EN(H6DO)(diag)-42...

  • Page 44: Malfunction Indicator Light

    Malfunction Indicator Light ENGINE (DIAGNOSTICS) 15.Malfunction Indicator Light A: PROCEDURE 1. Activation of malfunction indicator light. <Ref. to EN(H6DO)(diag)-43, ACTIVATION OF MALFUNCTION INDICATOR LIGHT, Malfunction Indicator Light.> ↓ 2. Malfunction indicator light does not come on. <Ref. to EN(H6DO)(diag)-45, MALFUNCTION INDICATOR LIGHT DOES NOT COME ON, Malfunction Indicator Light.>...
  • Page 45 Malfunction Indicator Light ENGINE (DIAGNOSTICS) (3) After the diagnosis is completed, malfunc- tion indicator light does not blink at a cycle of 3 Hz if there is no fault. Malfunction indicator light illuminates when the trouble occurs. EN-01681 (1) ON (2) OFF (3) Ignition switch ON (4) 1 second...
  • Page 46 Malfunction Indicator Light ENGINE (DIAGNOSTICS) C: MALFUNCTION INDICATOR LIGHT DOES NOT COME ON DIAGNOSIS: The malfunction indicator light circuit is open or shorted. TROUBLE SYMPTOM: When the ignition switch is turned to ON (engine OFF), malfunction indicator light does not come on. WIRING DIAGRAM: IGNITION SWITCH...
  • Page 47 Malfunction Indicator Light ENGINE (DIAGNOSTICS) Step Check CHECK ECM CONNECTOR. Is the ECM connector correctly Replace the ECM. Repair the con- Check the connection of ECM connector. connected? <Ref. to nection of ECM FU(H6DO)-34, connector. Engine Control Module (ECM).> CHECK HARNESS BETWEEN COMBINA- Is the resistance less than 1 Go to step 5.
  • Page 48 D: MALFUNCTION INDICATOR LIGHT DOES NOT GO OFF. DIAGNOSIS: The malfunction indicator light circuit is shorted. TROUBLE SYMPTOM: Although malfunction indicator light comes on when the engine runs, DTC is not shown on the Subaru Select Monitor display. WIRING DIAGRAM: IGNITION...
  • Page 49 Malfunction Indicator Light ENGINE (DIAGNOSTICS) E: MALFUNCTION INDICATOR LIGHT DOES NOT BLINK. DIAGNOSIS: • The malfunction indicator light circuit is open or shorted. • Test mode connector circuit is in open. TROUBLE SYMPTOM: Malfunction indicator light does not blink during inspection mode. WIRING DIAGRAM: IGNITION BATTERY...
  • Page 50 Malfunction Indicator Light ENGINE (DIAGNOSTICS) Step Check CHECK STATUS OF MALFUNCTION INDI- Does the malfunction indicator Go to step 2. Repair the mal- CATOR LIGHT. light illuminate? function indictor 1) Turn the ignition switch to OFF. light circuit. <Ref. 2) Disconnect the test mode connectors. 3) Turn the ignition switch to ON.

  • Page 51: Wiring Diagram

    Malfunction Indicator Light ENGINE (DIAGNOSTICS) F: MALFUNCTION INDICATOR LIGHT REMAINS BLINKING. DIAGNOSIS: Test mode connector circuit is shorted. TROUBLE SYMPTOM: Malfunction indicator light blinks without test mode connector connected. WIRING DIAGRAM: IGNITION BATTERY SWITCH SBF-7 SBF-1 No.5 COMBINATION LHD: 3 METER RHD: TERMINAL No.
  • Page 52 Malfunction Indicator Light ENGINE (DIAGNOSTICS) Step Check CHECK HARNESS BETWEEN ECM CON- Is the resistance less than 5 Repair the short Replace the ECM. Ω? NECTOR AND CHASSIS GROUNDING TER- circuit in harness <Ref. to MINAL. between ECM and FU(H6DO)-34, 1) Turn the ignition switch to OFF.

  • Page 53: Diagnostics For Engine Starting Failure

    Diagnostics for Engine Starting Failure ENGINE (DIAGNOSTICS) 16.Diagnostics for Engine Starting Failure A: PROCEDURE 1. Check for fuel amount. ↓ 2. Inspection of starter motor circuit <Ref. to EN(H6DO)(diag)-53, STARTER MOTOR CIRCUIT, Diagnostics for Engine Starting Failure.> ↓ 3. Inspection of ECM power supply and ground line. <Ref. to EN(H6DO)(diag)-56, CHECK POWER SUPPLY AND GROUND LINE OF ENGINE CONTROL MODULE (ECM), Diagnostics for Engine Starting Failure.>...
  • Page 54 Diagnostics for Engine Starting Failure ENGINE (DIAGNOSTICS) B: STARTER MOTOR CIRCUIT CAUTION: After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H6DO)(diag)-40, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)(diag)-33, PROCEDURE, Inspection Mode.>. WIRING DIAGRAM: IGNITION SWITCH BATTERY...
  • Page 55 Diagnostics for Engine Starting Failure ENGINE (DIAGNOSTICS) Step Check CHECK BATTERY. Is the voltage more than 12 V? Go to step 2. Charge or replace Check the battery voltage. the battery. CHECK OPERATION OF STARTER MOTOR. Does the starter motor oper- Go to step 3.
  • Page 56 Diagnostics for Engine Starting Failure ENGINE (DIAGNOSTICS) Step Check CHECK INPUT VOLTAGE OF STARTER RE- Is the voltage more than 10 V? Go to step 9. Repair the open LAY. circuit in harness 1) Turn the ignition switch to OFF. between starter 2) Disconnect the connector from starter relay.
  • Page 57 Diagnostics for Engine Starting Failure ENGINE (DIAGNOSTICS) C: CHECK POWER SUPPLY AND GROUND LINE OF ENGINE CONTROL MOD- ULE (ECM) CAUTION: After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H6DO)(diag)-40, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)(diag)-33, PROCEDURE, Inspection Mode.>.
  • Page 58 Diagnostics for Engine Starting Failure ENGINE (DIAGNOSTICS) Step Check CHECK MAIN RELAY. Is the resistance less than 10 Go to step 2. Replace the main Ω? 1) Turn the ignition switch to OFF. relay. 2) Remove the main relay. 3) Connect the battery to main relay terminals No.
  • Page 59 Diagnostics for Engine Starting Failure ENGINE (DIAGNOSTICS) Step Check CHECK INPUT VOLTAGE OF ECM. Is the voltage more than 10 V? Check ignition Repair the open or 1) Turn the ignition switch to ON. control system. ground short cir- 2) Measure the voltage between ECM con- <Ref.
  • Page 60 Diagnostics for Engine Starting Failure ENGINE (DIAGNOSTICS) D: IGNITION CONTROL SYSTEM CAUTION: After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H6DO)(diag)-40, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)(diag)-33, PROCEDURE, Inspection Mode.>. WIRING DIAGRAM: MAIN RELAY B327...
  • Page 61 Diagnostics for Engine Starting Failure ENGINE (DIAGNOSTICS) Step Check CHECK IGNITION SYSTEM FOR SPARKS. Does spark occur at each cyl- Check fuel pump Go to step 3. 1) Connect the spark plug to ignition coil. inder? system. <Ref. to 2) Release the fuel pressure. EN(H6DO)(diag)- 3) Contact the spark plug’s thread portion on 62, FUEL PUMP...
  • Page 62 Diagnostics for Engine Starting Failure ENGINE (DIAGNOSTICS) Step Check CHECK HARNESS BETWEEN ECM AND IG- Is the resistance more than 1 Go to step 7. Repair the ground NITION COIL & IGNITOR ASSY CONNEC- MΩ? short circuit in har- TOR. ness between Measure the resistance of harness between ECM and ignition...
  • Page 63 Diagnostics for Engine Starting Failure ENGINE (DIAGNOSTICS) E: FUEL PUMP CIRCUIT CAUTION: After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H6DO)(diag)-40, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)(diag)-33, PROCEDURE, Inspection Mode.>. WIRING DIAGRAM: BATTERY No.11 FUEL PUMP...
  • Page 64 Trouble Code NOTE: Diagnostics for (DTC).> Fuel pump operation can also be executed us- Engine Starting ing Subaru Select Monitor. Failure.> Refer to “Compulsory Valve Operation Check Mode” for procedures. <Ref. to EN(H6DO)(diag)-41, Compulsory Valve Oper- ation Check Mode.> EN(H6DO)(diag)-63...
  • Page 65 Diagnostics for Engine Starting Failure ENGINE (DIAGNOSTICS) F: FUEL INJECTOR CIRCUIT CAUTION: • Check or repair only faulty parts. • After repair or replacement of faulty parts, conduct Clear Memory Mode <Ref. to EN(H6DO)(diag)- 40, OPERATION, Clear Memory Mode.> and Inspection Mode <Ref. to EN(H6DO)(diag)-33, PROCE- DURE, Inspection Mode.>.
  • Page 66 Diagnostics for Engine Starting Failure ENGINE (DIAGNOSTICS) Step Check CHECK POWER SUPPLY TO EACH FUEL Is the voltage more than 10 V? Go to step 3. Repair the har- INJECTOR. ness and connec- 1) Turn the ignition switch to OFF. tor.

  • Page 67: List Of Diagnostic Trouble Code (Dtc)

    List of Diagnostic Trouble Code (DTC) ENGINE (DIAGNOSTICS) 17.List of Diagnostic Trouble Code (DTC) A: LIST Item Reference P0011 “A” Camshaft Position-Timing Over- <Ref. to EN(H6DO)(diag)-72, DTC P0011 “A” CAMSHAFT POSITION - TIM- Advanced or System Performance ING OVER-ADVANCED OR SYSTEM PERFORMANCE (BANK 1), Diag- (Bank 1) nostic Procedure with Diagnostic Trouble Code (DTC).>...
  • Page 68 List of Diagnostic Trouble Code (DTC) ENGINE (DIAGNOSTICS) Item Reference P0103 Mass or Volume Air Flow Circuit High <Ref. to EN(H6DO)(diag)-111, DTC P0103 MASS OR VOLUME AIR FLOW Input CIRCUIT HIGH INPUT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).> P0107 Manifold Absolute Pressure/Baro- <Ref.

  • Page 69: Diagnostic Procedure With Diagnostic Trouble Code (Dtc)

    List of Diagnostic Trouble Code (DTC) ENGINE (DIAGNOSTICS) Item Reference P0154 O2 Sensor Circuit No Activity <Ref. to EN(H6DO)(diag)-155, DTC P0154 O2 SENSOR CIRCUIT NO Detected (Bank 2 Sensor 1) ACTIVITY DETECTED (BANK 2 SENSOR 1), Diagnostic Procedure with Diagnostic Trouble Code (DTC).> P0157 O2 Sensor Circuit Low Voltage (Bank <Ref.
  • Page 70 List of Diagnostic Trouble Code (DTC) ENGINE (DIAGNOSTICS) Item Reference P0335 Crankshaft Position Sensor “A” Cir- <Ref. to EN(H6DO)(diag)-193, DTC P0335 CRANKSHAFT POSITION SEN- cuit SOR “A” CIRCUIT, Diagnostic Procedure with Diagnostic Trouble Code (DTC).> P0340 Camshaft Position Sensor “A” Circuit <Ref.
  • Page 71 List of Diagnostic Trouble Code (DTC) ENGINE (DIAGNOSTICS) Item Reference P0700 Transmission Control System (MIL <Ref. to EN(H6DO)(diag)-218, DTC P0700 TRANSMISSION CONTROL Request) SYSTEM (MIL REQUEST), Diagnostic Procedure with Diagnostic Trouble Code (DTC).> P1026 VVL System 1 Performance <Ref. to EN(H6DO)(diag)-219, DTC P1026 VVL SYSTEM 1 PERFOR- MANCE, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>...
  • Page 72 List of Diagnostic Trouble Code (DTC) ENGINE (DIAGNOSTICS) Item Reference P2103 Throttle Actuator Control Motor Cir- <Ref. to EN(H6DO)(diag)-248, DTC P2103 THROTTLE ACTUATOR CON- cuit High TROL MOTOR CIRCUIT HIGH, Diagnostic Procedure with Diagnostic Trou- ble Code (DTC).> P2109 Throttle Angle Sensor Closed Posi- <Ref.

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