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Inspection Procedure

  1. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND) 
    1. Disconnect the ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      B29-104 (E1) - Body ground Always Below 1 Ω
    3. Reconnect the ECM connector.

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - BODY GROUND) 

      Fig 1: Identifying B29 ECM Connector Terminals
      G06040239Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  2. INSPECT ECM (IGSW VOLTAGE) 
    1. Disconnect the ECM connector.
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Switch Condition Specified Condition
      A37-28 (IGSW) - Body ground Ignition switch ON 11 to 14 V
    4. Reconnect the ECM connector.

      NG: Go to step  9

      Fig 2: Identifying A37 ECM Connector Terminals
      G06040692Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  3. INSPECT FUSE (EFI MAIN FUSE) 
    1. Remove the EFI MAIN fuse from the engine room relay block.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      EFI MAIN fuse Always Below 1 Ω
    3. Reinstall the EFI MAIN fuse.

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

      Fig 3: Identifying EFI MAIN Fuse
      G06007435Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  4. INSPECT FUSE (EFI NO. 1 FUSE) 
    1. Remove the EFI No. 1 fuse from the engine room relay block.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      EFI No. 1 fuse Always Below 1 Ω
    3. Reinstall the EFI No. 1 fuse.

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

      Fig 4: Identifying EFI No. 1 Fuse
      G06007302Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  5. INSPECT INTEGRATION RELAY (EFI MAIN RELAY) 
    1. Remove the integration relay from the engine room relay block.
    2. Disconnect the integration relay connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1E-1 - 1B-4 Always 10 kΩ or higher
      Always Below 1 Ω (Apply battery voltage terminals 1B-2 and 1B-3)
    4. Reconnect the integration relay connector.
    5. Reinstall the integration relay.
      Fig 5: Identifying Integration Relay Connector Terminals
      G06008006Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPLACE INTEGRATION RELAY 

      OK: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY (EFI MAIN RELAY) - ECM) 
    1. Remove the integration relay from the engine room relay block.
    2. Disconnect the integration relay connector.
    3. Disconnect the ECM connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1B-4 - A37-1 (+B2) Always Below 1 Ω
      1B-4 - A37-2 (+B) Always Below 1 Ω
      1B-2 - A37-44 (MREL) Always Below 1 Ω

      Standard Resistance (Check for Short) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1B-4 or A37-2 (+B2) - Body ground Always 10 kΩ or higher
      1B-4 or A37-1 (+B) - Body ground Always 10 kΩ or higher
      1B-2 or A37-44 (MREL) - Body ground Always 10 kΩ or higher
    5. Reconnect the ECM connector.
    6. Reconnect the integration relay connector.
    7. Reinstall the integration relay.

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY (EFI MAIN RELAY) - ECM) 

      Fig 6: Identifying ECM Connector And Integration Relay Connector
      G06040238Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  7. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY (EFI MAIN RELAY) - BATTERY) 
    1. Remove the integration relay from the engine room relay block.
    2. Disconnect the integration relay connector.
    3. Disconnect the negative battery terminal.
    4. Disconnect the positive battery terminal.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1E-1 - Battery positive terminal Always Below 1 Ω

      Standard Resistance (Check for Short) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1E-1 or Battery positive terminal - Body ground Always 10 kΩ or higher
    6. Reconnect the integration relay connector.
    7. Reinstall the integration relay.
    8. Reconnect the positive battery terminal,
    9. Reconnect the negative battery terminal.

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY (EFI MAIN RELAY) - BATTERY) 

      Fig 7: Identifying Integration Relay Connector
      G06007540Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  8. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY (EFI MAIN RELAY) - BODY GROUND) 
    1. Remove the integration relay from the engine room relay block.
    2. Disconnect the integration relay connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1B-3 - Body ground Always Below 1 Ω
    4. Reconnect the integration relay connector.
    5. Reinstall the integration relay.

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY (EFI MAIN RELAY) - BODY GROUND) 

      Fig 8: Identifying Integration Relay Connector
      G06007540Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE )

  9. INSPECT FUSE (IGN FUSE) 
    1. Remove the IGN fuse from the driver side junction block.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      IGN fuse Always Below 1 Ω
    3. Reinstall the IGN fuse.

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

      Fig 9: Identifying IGN Fuse
      G06040241Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  10. INSPECT FUSE (IG2 FUSE) 
    1. Remove the IG2 fuse from the engine room relay block.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      IG2 fuse Always Below 1 Ω
    3. Reinstall the IG2 fuse.

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

      Fig 10: Identifying IG2 Fuse
      G06008011Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  11. INSPECT INTEGRATION RELAY (IG2 RELAY) 
    1. Remove the integration relay from the engine room relay block.
    2. Disconnect the integration relay connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1E-1 - 1A-4 Always 10 kΩ or higher
      Always Below 1 Ω (Apply battery voltage terminals 1A-2 and 1A-3)
    4. Reconnect the integration relay connector.
    5. Reinstall the integration relay.

      NG: REPLACE INTEGRATION RELAY (IG2 RELAY) 

      Fig 11: Identifying Integration Relay Connector Terminals
      G06008006Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  12. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY (IG2 RELAY) - ECM) 
    1. Disconnect the ECM connector.
    2. Remove the integration relay from the engine room relay block.
    3. Disconnect the integration relay connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1A-4 - A37-28 (IGSW) Always Below 1 Ω

      Standard Resistance (Check for Short) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1A-4 or A37-28 (IGSW) - Body ground Always 10 kΩ or higher
    5. Reconnect the ECM connector.
    6. Reconnect the integration relay connector.
    7. Reinstall the integration relay.

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY (IG2 RELAY) - ECM) 

      Fig 12: Identifying ECM Connector And Integration Relay Connector
      G06040242Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  13. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY (IG2 RELAY) - BATTERY) 
    1. Remove the integration relay from the engine room relay block.
    2. Disconnect the integration relay connector.
    3. Disconnect the negative battery terminal.
    4. Disconnect the positive battery terminal.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1E-1 - Battery positive terminal Always Below 1 Ω

      Standard Resistance (Check for Short) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1E-1 or Battery positive terminal - Body ground Always 10 kΩ or higher
    6. Reconnect the integration relay connector.
    7. Reinstall the integration relay.
    8. Reconnect the positive battery terminal,
    9. Reconnect the negative battery terminal.

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY (IG2 RELAY) - BATTERY) 

      Fig 13: Identifying Integration Relay Connector
      G06007540Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  14. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY (IG2 RELAY) - BODY GROUND) 
    1. Remove the integration relay from the engine room relay block.
    2. Disconnect the integration relay connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1A-3 - Body ground Always Below 1 Ω
    4. Reconnect the integration relay connector.
    5. Reinstall the integration relay.

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY (IG2 RELAY) - BODY GROUND) 

      Fig 14: Identifying Integration Relay Connector
      G06007540Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  15. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY (IG2 RELAY) - IGNITION SWITCH ASSEMBLY) 
    1. Remove the integration relay from the engine room relay block.
    2. Disconnect the integration relay connector.
    3. Disconnect the ignition switch assembly connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1A-2 - E5-6 (IG2) Always Below 1 Ω

      Standard Resistance (Check for Short) 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1A-2 or E5-6 (IG2) - Body ground Always 10 kΩ or higher
    5. Reconnect the integration relay connector.
    6. Reinstall the integration relay.
    7. Reconnect the ignition switch assembly connector.

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY (IG2 RELAY) - IGNITION SWITCH ASSEMBLY) 

      Fig 15: Identifying Ignition Switch Assembly Connector And Integration Relay Connector
      G06040244Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

  16. INSPECT IGNITION SWITCH ASSEMBLY 
    1. Inspect the ignition switch assembly (See REMOVAL ).

      NG: REPLACE IGNITION SWITCH ASSEMBLY  (See REMOVAL )

      OK: Go to next step 

  17. INSPECT FUSE (AM2 FUSE) 
    1. Remove the AM2 fuse from the engine room relay block.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      AM2 fuse Always Below 1 Ω
    3. Reinstall the AM2 fuse.

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

      Fig 16: Identifying AM2 Fuse
      G06008017Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - IGNITION SWITCH ASSEMBLY) 

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