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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 >> MIL Circuit >> Procedure

MIL Circuit: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK THAT MIL IS ILLUMINATED 
    1. Turn the ignition switch on (IG).
    2. Check the illumination of the MIL.

      Result

      Result Proceed to
      MIL remains illuminated (Even after ignition switch is turned on (IG) and several seconds have passed, MIL still remains illuminated) A
      MIL remains off (Does not illuminate at all) B

    B → See step   5 

    A: Go to next step 

  2. CHECK WHETHER MIL TURNS OFF 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch on (IG) and turn the tester on.
    3. Select the following menu items: Powertrain / Engine and ECT / Trouble Code.
    4. Check if any DTCs have been stored. Note down any DTCs.
    5. Clear the DTCs, refer to DTC CHECK / CLEAR .
    6. Check if the MIL goes off.

      Standard

      MIL goes off.

    NG → See step   3 

    OK → REPAIR CIRCUITS INDICATED BY OUTPUT DTCS 

  3. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS) 
    1. Disconnect the ECM connector.
    2. Turn the ignition switch on (IG).
    3. Check that the MIL is not illuminated.

      OK

      MIL is not illuminated.

    4. Reconnect the ECM connector.

    NG → See step   4 

    OK → See step   8 

  4. CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM) 
    1. Disconnect the ECM connector.
    2. Disconnect the combination meter connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for Open)

      Tester Connection Condition Specified Condition
      D61-13 (W) - E1-10 (CHK) Always Below 1 Ω

      Standard resistance (Check for Short)

      Tester Connection Condition Specified Condition
      D61-13 (W) or E1-10 (CHK) - Body ground Always 10 kΩ or higher
    4. Reconnect the ECM connector.
    5. Reconnect the combination meter connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION METER - ECM) 

    OK → See step   9 

  5. CHECK THAT ENGINE STARTS 
    1. Turn the ignition switch on (IG).
    2. Start the engine.

      Result

      Result Proceed to
      Engine starts A
      Engine does not start* B

      HINT: 

      *: The tester cannot communicate with the ECM.

    B → See step   10 

    A: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (COMBINATION METER - BODY GROUND) 
    1. Disconnect the ECM connector.
    2. Turn the ignition switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Condition Specified Condition
      D61-13 (W) - Body ground Ignition switch on (IG) 11 to 14 V
    4. Reconnect the ECM connector.

    NG → See step   7 

    OK → See step   8 

  7. CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM) 
    1. Disconnect the ECM connector.
    2. Disconnect the combination meter connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for short)

      Tester Connection Condition Specified Condition
      D61-13 (W) - E1-10 (CHK) Always Below 1 Ω

      Standard resistance (Check for Short)

      Tester Connection Condition Specified Condition
      D61-13 (W) or E1-10 (CHK) - Body ground Always 10 kΩ or higher
    4. Reconnect the ECM connector.
    5. Reconnect the combination meter connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION METER - ECM) 

    OK → See step   9 

  8. REPLACE ECM. Refer to  COMPONENTS 
  9. REPLACE COMBINATION METER ASSEMBLY. Refer to  COMPONENTS 
  10. GO TO VC OUTPUT CIRCUIT. Refer to  VC Output Circuit  
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