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Inspection Procedure

  1. CHECK OPERATION OF ENGINE CRANKING 
    1. When turning the ignition switch to the ST position, check whether the starter motor starts.

    OK: CHECK FOR INTERMITTENT PROBLEMS 

    NG: GO TO NEXT STEP 

  2. READ VALUE OF INTELLIGENT TESTER (STA SIGNAL) 
    1. Connect the intelligent tester to the DLC3.
    2. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / STARTER SIG.
    3. Read the values.

      Standard 

      IGNITION SWITCH POSITION

      STARTER SIG Ignition Switch Position
      OFF ON
      ON START

    OK: Go to step   5

    NG: GO TO NEXT STEP 

  3. INSPECT ECM (STAR AND STSW VOLTAGE) 
    1. Measure the voltage between the terminals of the E5 and E6 ECM connectors, while cranking the engine.
      Fig 1: Identifying E5 And E6 ECM Connectors Terminals
      G04968613Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      STAR/NSW (E5-8) - E1 (E6-1) 9 to 14 V
      STSW (E5-12) - E1 (E6-1) 9 to 14 V

      Result 

      RESULT CHART

      Terminal STAR Terminal STSW Proceed to
      9 to 14 V 9 to 14 V A
      0V 9 to 14 V B
      0V 0V C

    B: REPLACE ECM 

    C: Go to step   9

    A: GO TO NEXT STEP 

  4. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 
    1. Disconnect the P1 park/neutral position switch connector.
      Fig 2: Identifying P1 Park/Neutral Position Switch Connector
      G04968614Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
    2. Check for continuity between each terminal shown below when the shift lever is moved to each position.

      Standard 

      TESTER CONNECTION SPECIFIED CONDITION

      Shift Position Tester Connection Specified Condition
      P 1-3
      6-9      		 Continuity
      R 2-3
      N 3-5
      6-9
      D 3-7
      3 3 -4
      2,L 3-8

    NG: REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY 

    OK: CHECK AND REPLACE HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM) 

  5. INSPECT STARTER RELAY 
    1. Remove the starter relay from the engine room R/B.
      Fig 3: Identifying Starter Relay
      G04968615Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
    2. Inspect the starter relay.

      Standard 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Connection Specified Condition
      1 -2 Continuity
      3-5 No continuity
      Continuity (Apply battery voltage to terminals 1 and 2)
    3. Reinstall the starter relay.

    NG: REPLACE STARTER RELAY 

    OK: GO TO NEXT STEP 

  6. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - BODY GROUND) 
    1. Check the harness and connector between the park/ neutral position switch and starter relay.
      1. Disconnect the P1 park/neutral position switch connector.
        Fig 4: Identifying P1 Park/Neutral Position Switch Connector
        G04968616Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
      2. Remove the starter relay from the engine room R/B.
      3. Measure the resistance between the wire harness side connectors.

        Standard resistance (Check for open) 

        TESTER CONNECTIONS SPECIFIED CONDITIONS

        Tester Connections Specified Conditions
        Park/neutral position switch (P1 -6) - Starter relay (1) Below 1 Ω

        Standard resistance (Check for short) 

        TESTER CONNECTIONS SPECIFIED CONDITIONS

        Tester Connections Specified Conditions
        Park/neutral position switch (P1 -6) or Starter relay (1) -Body ground 10 kΩ or higher
      4. Reconnect the park/neutral position switch connector.
      5. Reinstall the starter relay.
    2. Check the harness and connector between the starter relay, and body ground.
      1. Measure the resistance between each relay and body ground.

        Standard resistance (Check for open) 

        TESTER CONNECTIONS SPECIFIED CONDITIONS

        Tester Connections Specified Conditions
        Starter relay (2) - Body ground Below 1 Ω
      2. Reinstall the starter relay.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: GO TO NEXT STEP 

  7. INSPECT ENGINE ROOM RELAY BLOCK (STARTER RELAY VOLTAGE) 
    1. Remove the starter relay from the engine room R/B.
      Fig 5: Identifying Starter Relay
      G04968617Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
    2. Measure the voltage between the terminal of the engine room R/B and body ground.

      Standard voltage 

      TESTER CONNECTIONS SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      Starter relay (5) - Body ground 9 to 14 V
    3. Reinstall the starter relay.

    NG: CHECK AND REPLACE HARNESS AND CONNECTOR (STARTER RELAY - BATTERY) 

    OK: GO TO NEXT STEP 

  8. INSPECT STARTER ASSEMBLY 
    1. Inspect the starter assembly (See INSPECTION for Standard, INSPECTION for Cold area).

    NG: REPAIR OR REPLACE STARTER ASSEMBLY 

    OK: CHECK AND REPLACE HARNESS AND CONNECTOR (STARTER RELAY - STARTER, STARTER BATTERY) 

  9. CHECK FUSE (STA NO. 2) 
    1. Remove the STA No. 2 fuse from the driver side J/B.
      Fig 6: Identifying STA No. 2 Fuse
      G04968618Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
    2. Check for continuity in the STA No. 2 fuse.

      Standard: 

      Continuity 

    3. Reinstall the STA No. 2 fuse.

    NG: CHECK FOR SHORT IN ALL HARNESSES AND CONNECTORS CONNECTED NO. 2 STA FUSE AND REPLACE NO. 2 STA FUSE 

    OK: GO TO NEXT STEP 

  10. INSPECT IGNITION OR STARTER SWITCH ASSEMBLY 
    1. Disconnect the I18 ignition switch connector.
      Fig 7: Identifying I18 Ignition Switch Connector
      G04968619Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
    2. Check for continuity between the terminals shown in the chart below.

      Standard 

      TESTER CONNECTION SPECIFIED CONDITION

      Switch Position Tester Connection Specified Condition
      LOCK All terminal to terminal No continuity
      ACC 2-3 Continuity
      ON 2-3,2-4,3-4,6-7 Continuity
      START 1-2,1 -4,2-4,6-7,6-8,7-8 Continuity
    3. Reconnect the ignition switch connector.

    NG: REPLACE IGNITION OR STARTER SWITCH ASSEMBLY 

    OK: CHECK AND REPLACE HARNESS AND CONNECTOR (ECM-BATTERY) 

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