СИСТЕМА SFI Starter Signal Circuit

Информация добавлена 08-08-2017

DESCRIPTION

While the engine is being cranked, current flows from terminal STAR of the power management control ECU to the park/neutral position switch and also flows to terminal STA of the ECM (STA signal).

WIRING DIAGRAM

Refer to DTC P0617.

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CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tech Tips

This chart is based on the premise that the engine can crank normally. If the engine cannot cranknormally, proceed to Problem Symptoms Table.

Click here

PROCEDURE


  1. READ VALUE USING GTS (STARTER SIGNAL)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Starter Signal.


      Powertrain > Engine and ECT > Data List
      Tester Display
      Starter Signal

    5. Read the value.

      OK
      Ignition Switch Position Starter Signal
      On (IG) Close
      START Open
      Result
      Proceed to
      OK
      NG

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

  2. CHECK STARTER RELAY (ST) (POWER SOURCE)

    B001TBIC02
    *1 Starter Relay (ST)
    *2 Engine Room Relay Block

    1. Remove the starter relay (ST) from the engine room relay block and junction block.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      Starter relay (ST) terminal 1 - Body ground Engine cranking 11 to 14 V

      Tech Tips

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

    3. Reinstall the starter relay (ST).

      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (STARTER RELAY (ST) - PARK/NEUTRAL POSITION SWITCH ASSEMBLY) Click here

    OK

  3. INSPECT STARTER RELAY (ST)


    1. Inspect the starter relay (ST).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE STARTER RELAY (ST)

    OK

  4. CHECK HARNESS AND CONNECTOR (STARTER RELAY (ST) - BODY GROUND)


    1. Remove the starter relay (ST) from the engine room relay block.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      Starter relay (ST) terminal 2 - Body ground Always Below 1 Ω

    3. Reinstall the starter relay (ST).

      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH)

    NG

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

  5. CHECK HARNESS AND CONNECTOR (STARTER RELAY (ST) - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)


    1. Remove the starter relay (ST) from the engine room relay block.

    2. Disconnect the C33 park/neutral position switch connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      Starter relay (ST) terminal 1 - C33-5 Always Below 1 Ω
      Starter relay (ST) terminal 1 or C33-5 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. Inspect the park/neutral position switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - POWER MANAGEMENT CONTROL ECU)


    1. Disconnect the C33 park/neutral position switch connector.

    2. Disconnect the G38 power management control ECU connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      C33-4 - G38-3 (STAR) Always Below 1 Ω
      C33-4 or G38-3 (STAR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    GO TO ENTRY AND START SYSTEM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR