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Home >> Toyota >> 2011 >> Highlander Hybrid Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 63 (Engine Control System (2GR-FE) (Diagnostic Codes (P1604 - P2610) & Circuit Tests))) >> SFI System >> Starter Signal Circuit >> Procedure

Starter Signal Circuit: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. INSPECT TERMINAL VOLTAGE (ST RELAY TERMINAL) 
    1. Remove the ST relay from the engine room relay block.
      Fig 1: Identifying St Relay From The Engine Room Relay Block
      GTY299661Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Condition Specified Condition
      ST relay terminal 2 - Body ground Engine cranking 9 to 14 V
      TEXT IN ILLUSTRATION

      *1 Engine Room Relay Block
      *2 ST Relay

      HINT: 

      The engine does not crank because the relay is not installed.

    3. Reinstall the ST relay.

    NG → See step   11 

    OK: Go to next step 

  2. INSPECT ST RELAY 
    1. Remove the ST relay from the engine room relay block.
      Fig 2: Identifying Relay Test Terminals
      GTY120773Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

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

    NG → REPLACE ST RELAY 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (ST RELAY - BODY GROUND) 
    1. Remove the ST relay from the engine room relay block.
      Fig 3: Identifying ST Relay From The Engine Room Relay Block
      GTY303910Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      ST relay terminal 1 - Body ground Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *1 Engine Room Relay Block
      *2 ST Relay
    3. Reinstall the ST relay.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (ST RELAY - BODY GROUND) 

    OK: Go to next step 

  4. INSPECT TERMINAL VOLTAGE (ST RELAY TERMINAL) 
    1. Remove the ST relay from the engine room relay block.
      Fig 4: Identifying ST Relay From The Engine Room Relay Block
      GTY303910Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Condition Specified Condition
      ST relay terminal 5 - Body ground Cranking 9 to 14 V
      TEXT IN ILLUSTRATION

      *1 Engine Room Relay Block
      *2 ST Relay
    3. Reinstall the ST relay.

    NG → See step   6 

    OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (ST RELAY - STARTER) 
    1. Remove the ST relay from the engine room relay block.
    2. Disconnect the starter connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      ST relay terminal 3 - B12-1 Always Below 1 Ω
    4. Reconnect the starter connector.
    5. Reinstall the ST relay.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (ST RELAY - STARTER) 

    OK → REPAIR OR REPLACE STARTER ASSEMBLY 

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

      Standard resistance (Check for open)

      Tester Connection Condition Specified Condition
      ST relay terminal 5 - D24-7 (ST2) Always Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Condition Specified Condition
      ST relay terminal 5 or D24-7 (ST2) - Body ground Always 10 kΩ or higher
    4. Reinstall the ST relay.
    5. Reconnect the ignition switch connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (ST RELAY - IGNITION SWITCH ASSEMBLY) 

    OK: Go to next step 

  7. INSPECT IGNITION SWITCH ASSEMBLY 
    1. Disconnect the ignition switch assembly connector.
      Fig 5: Identifying Ignition Switch Assembly Connector
      GTY298721Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Ignition Switch Position Specified Condition
      All terminals LOCK 10 kΩ or higher
      D24-4 (AM1) - D24-3 (ST1) START Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Ignition Switch Assembly)
    3. Reconnect the ignition switch assembly connector.

    NG → See step   13 

    OK: Go to next step 

  8. CHECK HARNESS AND CONNECTOR (ST RELAY - PARK/NEUTRAL POSITION SWITCH) 
    1. Remove the ST relay from the engine room relay block.
    2. Disconnect the park/neutral position switch connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)

      Tester Connection Condition Specified Condition
      ST relay terminal 2 - B5-5 Always Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Condition Specified Condition
      ST relay terminal 2 or B5-5 - Body ground Always 10 kΩ or higher
    4. Reinstall the ST relay.
    5. Reconnect the park/neutral position switch connector.

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

    OK: Go to next step 

  9. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 
    1. Inspect the park/neutral position switch assembly (U151E:, refer to INSPECTION , U151F:, refer to INSPECTION ).
      RESULT:

      Result Proceed To
      OK A
      NG (with U151E) B
      NG (with U151F) C

    B → See step   14 

    C → See step   15 

    A: Go to next step 

  10. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - IGNITION SWITCH ASSEMBLY) 
    1. Disconnect the park/neutral position switch connector.
    2. Disconnect the ignition switch assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)

      Tester Connection Condition Specified Condition
      B5-4 - D24-3 (ST1) Always Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Condition Specified Condition
      B5-4 or D24-3 (ST1) - Body ground Always 10 kΩ or higher
    4. Reconnect the park/neutral position switch connector.
    5. Reconnect the ignition switch assembly connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH - IGNITION SWITCH ASSEMBLY) 

    OK: Go to next step 

  11. INSPECT IGNITION SWITCH ASSEMBLY 
    1. Disconnect the ignition switch assembly connector.
      Fig 6: Identifying Ignition Switch Assembly Connector
      GTY298721Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Ignition Switch Position Specified Condition
      All terminals LOCK 10 kΩ or higher
      D24-4 (AM1) - D24-3 (ST1) START Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Ignition Switch Assembly)
    3. Reconnect the ignition switch assembly connector.

    NG → See step   13 

    OK: Go to next step 

  12. INSPECT FUSE (AM1 FUSE) 
    1. Remove the AM1 fuse from the instrument panel junction block.
      Fig 7: Identifying AM1 Fuse In Instrument Panel Junction Block
      GTY172417Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      AM1 fuse Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *1 Instrument Panel Junction Block
    3. Reinstall the AM1 fuse.

    NG → REPLACE FUSE (AM1 FUSE) 

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

  13. REPLACE IGNITION SWITCH ASSEMBLY. Refer to  COMPONENTS 
  14. REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to  COMPONENTS 
  15. REPLACE PARK/NEUTRAL POSITION SWITCH. Refer to  COMPONENTS 
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