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Inspection Procedure

  1. CHECK OPERATION OF CRANKING 
    1. When starting the engine, check whether the starter motor starts.

    OK: CHECK FOR INTERMITTENT PROBLEMS  (See CHECK FOR INTERMITTENT PROBLEMS )

    NG: Go to next step 

  2. READ VALUE USING TECHSTREAM (STA SIGNAL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG) and turn the Techstream ON.
    3. Enter the following menus: Powertrain/Engine/Data List/Starter Signal.
    4. Check the result when the engine switch is turned on (IG) and the engine is started.

      Standard 

      ENGINE SWITCH POSITION CHART

      Starter Signal Engine Switch Position
      OFF on (IG)
      ON ENGINE START

    OK:  Go to step  10

    NG: Go to next step 

  3. INSPECT ECM (STAR AND STSW VOLTAGE) 
    1. Measure the voltage according to the value(s) in the table below while cranking the engine.

      Standard voltage 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

      Tester Connection Condition Specified Condition
      A6-2 (STAR) - E86-1 (E1) Cranking 11 to 14 V
      A6-27 (STSW) - E86-1 (E1) Cranking 11 to 14 V

      Result 

      RESULT CHART

      Terminal STAR Terminal STSW Proceed to
      11 to 14 V 11 to 14 V A
      0 V 11 to 14 V B
      0 V 0 V C

    B: REPLACE ECM  (See REMOVAL  )

    C:  Go to step  18

    Fig 1: Inspecting ECM (Star And STSW Voltage)
    G05804021Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    A: Go to next step 

  4. INSPECT ST CUT RELAY 
    1. Remove the ST CUT relay from the engine room No. 2 relay block.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

      Tester Connection Condition Specified Condition
      3 - 5 When no battery voltage applied to terminals 1 and 2 10 kΩ or higher
      3 - 5 When battery voltage applied to terminals 1 and 2 Below 1 Ω
    3. Reinstall the relay.

    NG: REPLACE ST CUT RELAY 

    Fig 2: ST CUT Relay Circuit Diagram
    G04942983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  5. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 
    1. Disconnect the park/neutral position (PNP) switch.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

      Tester Connection Shift Position Specified Condition
      4 - 5 P Below 1 Ω
      4 - 5 N Below 1 Ω
    3. Reconnect the PNP switch connector.

    NG: REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY  (See PARK/NEUTRAL POSITION SWITCH )

    Fig 3: Identifying PNP Switch Connector
    G04942993Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (ST CUT RELAY POWER SOURCE) 
    1. Remove the ST CUT relay from the engine room No. 2 relay block.
    2. Cranking the engine.
    3. Measure the voltage according to the value(s) in the table below while cranking the engine.

      Standard voltage 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

      Tester Connection Condition Specified Condition
      ST CUT relay (2) - Body ground Cranking 11 to 14 V
    4. Reinstall the relay.

    NG:  Go to step  16

    Fig 4: Checking Harness And Connector (ST CUT Relay Power Source)
    G05804024Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  7. CHECK HARNESS AND CONNECTOR (ST CUT RELAY - BODY GROUND) 
    1. Remove the ST CUT relay from the engine room No. 2 relay block.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

      Tester Connection Condition Specified Condition
      ST CUT relay (1) - Body ground Always Below 1 Ω
    3. Reinstall the relay.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 5: Checking Harness And Connector (ST CUT Relay - Body Ground)
    G05804024Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  8. CHECK HARNESS AND CONNECTOR (ECM 
    1. Disconnect the ECM connector.
    2. Remove the ST CUT relay from the engine room No. 2 relay block.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

      Tester Connection Condition Specified Condition
      A6-2 (STAR) - ST CUT relay (3) Always Below 1 Ω
    4. Reinstall the ST CUT relay.
    5. Reconnect the ECM connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 6: Checking Harness And Connector (ECM - ST CUT Relay)
    G05804026Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  9. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - STARTER RELAY) 
    1. Check the harness and the connectors between the park/neutral position switch and the starter relay.
      1. Disconnect the PNP switch connector.
      2. Remove the starter relay from the engine room No. 1 relay block.
      3. Measure the resistance according to the value(s) in the table below.

        Standard resistance (Check for open) 

        TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

        Tester Connection Condition Specified Condition
        Park/Neutral position switch (E77-S) - STARTER relay (1) Always Below 1 Ω

        Standard resistance (Check for short) 

        TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

        Tester Connection Condition Specified Condition
        Park/Neutral position switch (E77-5) or STARTER relay (1) - Body ground Always 10 kΩ or higher
      4. Reconnect the PNP switch connector.
      5. Reinstall the relay.
    2. Check the harness and the connector between the STARTER relay and the body ground.
      1. Remove the STARTER relay from the engine room No. 1 relay block.
      2. Measure the resistance according to the value(s) in the table below.

        Standard resistance (Check for open) 

        TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

        Tester Connection Condition Specified Condition
        STARTER relay (2) - Body ground Always Below 1 Ω
      3. Reinstall the relay.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (ST CUT RELAY - PARK/NEUTRAL POSITION SWITCH) 

    Fig 7: Checking Harness And Connector (Park/Neutral Position Switch - Starter Relay)
    G05804027Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH - STARTER RELAY) 

  10. INSPECT STARTER RELAY 
    1. Remove the STARTER relay from the engine room No. 1 relay block.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

      Tester Connection Condition Specified Condition
      3 - 5 When no battery voltage applied to terminals 1 and 2 10 kΩ or higher
      3 - 5 When battery voltage applied to terminals 1 and 2 Below 1 Ω
    3. Reinstall the relay.

    NG: REPLACE STARTER RELAY 

    Fig 8: Starter Relay Circuit Diagram
    G04942976Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  11. INSPECT FUSE (STARTER FUSE) 
    1. Remove the fusible link block from the engine room No. 1 relay block.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

      Tester Connection Condition Specified Condition
      1B-1 - 1G-4 Always Below 1 Ω
    3. Reinstall the fusible link block.

    NG: REPLACE FUSIBLE LINK BLOCK 

    Fig 9: Inspecting Fuse (Starter Fuse)
    G05804029Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  12. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - STARTER RELAY) 
    1. Check the harness and the connectors between the park/neutral position switch and the starter relay.
      1. Disconnect the PNP switch connector.
      2. Remove the STARTER relay from the engine room No. 1 relay block.
      3. Measure the resistance according to the value(s) in the table below.

        Standard resistance (Check for open) 

        TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

        Tester Connection Condition Specified Condition
        Park/Neutral position switch (E77-5) - STARTER relay (1) Always Below 1 Ω

        Standard resistance (Check for short) 

        TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

        Tester Connection Condition Specified Condition
        Park/Neutral position switch (E77-5) or STARTER relay (1) - Body ground Always 10 kΩ or higher
      4. Reconnect the PNP switch connector.
      5. Reinstall the relay.
    2. Check the harness and the connector between the STARTER relay and the body ground.
      1. Remove the STARTER relay from the engine room No. 1 relay block.
      2. Measure the resistance according to the value(s) in the table below.

        Standard resistance (Check for open) 

        TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

        Tester Connection Condition Specified Condition
        Starter relay (2) - Body ground Always Below 1 Ω
      3. Reinstall the relay.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 10: Checking Harness And Connector (Park/Neutral Position Switch - Starter Relay)
    G05804027Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  13. CHECK HARNESS AND CONNECTOR (STARTER RELAY - BODY GROUND) 
    1. Remove the STARTER relay from the engine room No. 1 relay block.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

      Tester Connection Condition Specified Condition
      STARTER relay (2) - Body ground Always Below 1 Ω
    3. Reinstall the relay.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 11: Checking Harness And Connector (Starter Relay - Body Ground)
    G05751823Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  14. INSPECT ENGINE ROOM RELAY BLOCK (STARTER RELAY VOLTAGE) 
    1. Remove the starter relay from the engine room No. 1 relay block.
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

      Tester Connection Condition Specified Condition
      Starter relay (5) - Body ground Always 11 to 14 V
    3. Reinstall the relay.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER RELAY - STARTER FUSE) 

    Fig 12: Inspecting Engine Room Relay Block (Starter Relay Voltage)
    G05751823Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  15. INSPECT STARTER ASSEMBLY 
    1. Inspect the starter (See INSPECTION ).

    NG: REPAIR OR REPLACE STARTER ASSEMBLY 

    OK: Go to next step 

  16. CHECK HARNESS AND CONNECTOR (STARTER RELAY - STARTER ASSEMBLY) 
    1. Remove the STARTER relay from the engine room No. 1 relay block.
    2. Disconnect the starter connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

      Tester Connection Condition Specified Condition
      STARTER relay (3) - E48-1 Always Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER RELAY - STARTER ASSEMBLY) 

    Fig 13: Checking Harness And Connector (Starter Relay - Starter Assembly)
    G05804033Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER - BATTERY) 

  17. CHECK HARNESS AND CONNECTOR (ST CUT RELAY 
    1. Remove the ST CUT relay from the engine room No. 2 relay block.
    2. Disconnect the power source control ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

      Tester Connection Condition Specified Condition
      ST CUT relay (2) - K73-15 (STR2) Always Below 1 Ω
    4. Reinstall the relay.
    5. Reconnect the ECU connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 14: Checking Harness And Connector (ST CUT Relay - Power Source Control ECU)
    G05804034Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START  (See HOW TO PROCEED WITH TROUBLESHOOTING )

  18. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - ECM) 
    1. Check the harness and the connectors between the power source control ECU and ECM.
      1. Disconnect the power source control ECU connector.
      2. Disconnect the ECM connector.
      3. Measure the resistance according to the value(s) in the table below.

        Standard resistance (Check for open) 

        TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

        Tester Connection Condition Specified Condition
        K73-39 (STSW) - A6-27 (STSW) Always Below 1 Ω

        Standard resistance (Check for short) 

        TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

        Tester Connection Conditon Specified Condition
        K73-39 (STSW) or A6-27 (STSW) - Body ground Always 10 kΩ or higher
      4. Reconnect the ECM connector and power source control ECM connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 15: Checking Harness And Connector (Power Source Control ECU - ECM)
    G05804035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START  (See HOW TO PROCEED WITH TROUBLESHOOTING )

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