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Home >> Toyota >> 2007 >> RAV4 Base, 3.5 K, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control System (2GR-FE) >> SFI System >> ECM Power Source Circuit >> Inspection Procedure
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Inspection Procedure

  1. INSPECT FUSES (P/I, AM2, IG2, EFI MAIN AND IGN) 
    1. Remove the P/I fuse, AM2 fuse, IG2 fuse and EFI MAIN fuse from the engine room No. 1 relay block.
    2. Remove the IGN fuse from the instrument panel junction block.
    3. Measure the resistance of the fuses.

      Standard resistance: Below 1 Ω 

    4. Reinstall the fuses.

    NG: CHECK FOR SHORT IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE 

    Fig 1: Identifying P/I Fuse, AM2 Fuse, IG2 Fuse And EFI Main Fuse
    G05184220Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO to Next Step 

  2. INSPECT RELAY (IG2, EFI MAIN) 
    1. Remove the integration relay and IG2 relay from the engine room No. 1 relay block.
    2. Measure the resistance between the terminals of the integration relay.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      1C-1 - 1A-4 10 kΩ or higher
      Below 1 Ω (When battery voltage is applied to terminals 1A-2 and 1A-3)
    3. Measure the resistance between the terminals of the IG2 relay.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      3 - 5 10 kΩ or higher
      Below 1 Ω (When battery voltage Is applied to terminals 1 and 2)
    4. Reinstall the relay.

      NG: REPLACE RELAY 

    Fig 2: Measuring Resistance Between Terminals Of IG2 Relay
    G05184221Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO to Next Step 

  3. CHECK WIRE HARNESS (ECM - BODY GROUND) 
    1. Disconnect the B30 ECM connector.
    2. Measure the resistance.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      B30-81 (E1) - Body ground Below 1 Ω
    3. Reconnect the ECM connector.

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    Fig 3: Identifying B30 ECM Connector
    G05184222Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO to Next Step 

  4. INSPECT ECM (IGSW VOLTAGE) 
    1. Disconnect the B30 and A9 ECM connectors.
    2. Turn the ignition switch ON.
    3. Measure the voltage between the terminals of the B30 and A9 ECM connectors.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      A9-28 (IGSW) - B30-81 (E1) 9 to 14 V
    4. Reconnect the ECM connector.

    OK: REPLACE ECM 

    Fig 4: Identifying B30 And A9 ECM Connectors Terminals
    G05184223Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: GO to Next Step 

  5. CHECK WIRE HARNESS (RELAY BLOCK, ECM, IGNITION SWITCH, BATTERY) 
    1. Disconnect the A9 ECM connector.
    2. Disconnect the E3 ignition switch connector.
    3. Disconnect the cable from the battery positive terminal.
    4. Remove the AM2 fuse and IG2 relay.
    5. Measure the resistance between the terminals.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      A9-28 (IGSW) - IG2 relay terminal 5 Below 1 Ω
      IG2 relay terminal 2 - Body ground Below 1 Ω
      Positive (+) battery cable - IG2 relay terminal 3 Below 1 Ω
      Positive (+) battery cable - AM2 fuse terminal 1 Below 1 Ω
      E3-7 (AM2) - AM2 fuse terminal 2 Below 1 Ω
      E3-6 (IG2) - IG2 relay terminal 1 Below 1 Ω
      A9-28 (IGSW) or IG2 relay terminal 5 - Body ground 10 kΩ or higher
      Positive (+) battery cable or AM2 fuse terminal 1 - Body ground 10 kΩ or higher
      Positive (+) battery cable or IG2 relay terminal 3 - Body ground 10 kΩ or higher
      E3-7 (AM2) or AM2 fuse terminal 2 - Body ground 10 kΩ or higher
      E3-6 (IG2) or IG2 relay terminal 1 - Body ground 10 kΩ or higher
    6. Reinstall the relay and fuse.
    7. Reconnect the connectors.

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    Fig 5: Identifying Terminals Of A9 ECM Connector
    G05184224Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO to Next Step 

  6. INSPECT IGNITION SWITCH  (see INSPECTION PROCEDURE )

    NG: REPLACE IGNITION SWITCH 

    OK: GO to Next Step 

  7. CHECK WIRE HARNESS (INTEGRATION RELAY - ECM, BATTERY AND BODY GROUND) 
    1. Disconnect the A9 ECM connector.
    2. Disconnect the cable from the battery positive terminal.
    3. Remove the integration relay from the engine room No. 1 relay block.
    4. Disconnect the integration relay connector.
    5. Remove the P/I fuse from the engine room No. 1 relay block.
    6. Measure the resistance between the terminals.

      Standard resistance (Check for open) 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      A9-2 (+B) - 1A-4 Below 1 Ω
      A9-1 (+B2) - 1A-4 Below 1 Ω
      A9-44(MREL) - 1A-2 Below 1 Ω
      P/I fuse terminal 2 - 1C-1 Below 1 Ω
      P/I fuse terminal 1 - Positive (+) battery cable Below 1 Ω
      1A-3 - Body ground Below 1 Ω
      A9-2 (+B) or 1A-4 - Body ground 10 kΩ or higher
      A9-1 (+B2) or 1A-4 - Body ground 10 kΩ or higher
      A9-44 (MREL) or 1A-2 - Body ground 10 kΩ or higher
      P/I fuse terminal 2 or 1C-1 - Body ground 10 kΩ or higher
      P/I fuse terminal 1 or Positive (+) battery cable - Body ground 10 kΩ or higher
    7. Reconnect the connectors.
    8. Reconnect the cable to the battery positive terminal.
    9. Reinstall the integration relay and P/I fuse.

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    Fig 6: Identifying A9 ECM Connector Terminals
    G05184225Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPAIR OR REPLACE ENGINE ROOM NO. 1 RELAY BLOCK 

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