POWER MIRROR CONTROL SYSTEM Mirror Heater does not Operate with Rear Defogger Switch

SYSTEM DESCRIPTION

The mirror heater operates when the following conditions are met: 1) the air conditioning amplifier sends a rear defogger switch signal through the CAN communication line to the front door ECU LH and RH, and 2) the defogger operates.

WIRING DIAGRAM

A001D7XE06

PROCEDURE


  1. CHECK DTC


    1. Use the intelligent tester to check if the CAN communication system is functioning normally.

      Result:
      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output (for LHD) B
      CAN DTC is output (for RHD) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK DEFOGGER SYSTEM


    1. Check that the defogger operates normally.

      OK
      Defogger operates normally.

    NG

    GO TO WINDOW DEFOGGER SYSTEM Click here

    OK

  3. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (MIRROR HEATER FUNCTION)


    1. Select the Active Test, use the intelligent tester to generate a control command, and then check the mirror heater function.

      Driver Door
      Tester Display Test Part Control Range
      Mirr Heater Mirror heater operation OFF / ON
      Passenger Door
      Tester Display Test Part Control Range
      Mirr Heater Mirror heater operation OFF / ON
      Result
      Result Proceed to
      Outer rear view mirror (for driver side) does not operate normally A
      Outer rear view mirror (for passenger side) does not operate normally B
      Outer rear view mirror (for driver side) and outer rear view mirror (for passenger side) operates normally C

    B

    INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (for Passenger Side) Click here

    C

    REPLACE AIR CONDITIONING AMPLIFIER Click here

    A

  4. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (for Driver Side)


    1. A001EX4E10

      for LHD:


      1. Remove the outer rear view mirror LH Click here.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        4 (HTR+) - 12 (HTR-) 25°C (77°F) 3.6 to 4.8 Ω

      3. Apply battery voltage and check the mirror heater operation.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Terminal 4 (HTR+)

        Battery negative (-) → Terminal 12 (HTR-)

        		 Mirror becomes warm

        Tech Tips

        It will take a short time for the mirror to become warm.

    2. A001DWME09

      for RHD:


      1. Remove the outer rear view mirror RH Click here.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        4 (HTR+) - 12 (HTR-) 25°C (77°F) 3.6 to 4.8 Ω

      3. Apply battery voltage and check the mirror heater operation.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Terminal 4 (HTR+)

        Battery negative (-) → Terminal 12 (HTR-)

        		 Mirror becomes warm

        Tech Tips

        It will take a short time for the mirror to become warm.


    OK

    REPLACE FRONT DOOR ECU (for Driver Side) Click here

    NG

  5. INSPECT OUTER MIRROR (for Driver Side)


    1. A001AXWE03

      for LHD:


      1. Remove the outer mirror LH Click here.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        1 - 2 25°C (77°F) 3.6 to 4.8 Ω
    2. A001DS0E03

      for RHD:


      1. Remove the outer mirror RH Click here.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        1 - 2 25°C (77°F) 3.6 to 4.8 Ω

    OK

    REPLACE OUTER MIRROR ACTUATOR ASSEMBLY (for Driver Side) Click here

    NG

    REPLACE OUTER MIRROR (for Driver Side) Click here

  6. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (for Passenger Side)


    1. A001DWME09

      for LHD:


      1. Remove the outer rear view mirror RH Click here.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        4 (HTR+) - 12 (HTR-) 25°C (77°F) 3.6 to 4.8 Ω

      3. Apply battery voltage and check the mirror heater operation.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Terminal 4 (HTR+)

        Battery negative (-) → Terminal 12 (HTR-)

        		 Mirror becomes warm

        Tech Tips

        It will take a short time for the mirror to become warm.

    2. A001EX4E10

      for RHD:


      1. Remove the outer rear view mirror LH Click here.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        4 (HTR+) - 12 (HTR-) 25°C (77°F) 3.6 to 4.8 Ω

      3. Apply battery voltage and check the mirror heater operation.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Terminal 4 (HTR+)

        Battery negative (-) → Terminal 12 (HTR-)

        		 Mirror becomes warm

        Tech Tips

        It will take a short time for the mirror to become warm.


    OK

    REPLACE FRONT DOOR ECU (for Passenger Side) Click here

    NG

  7. INSPECT OUTER MIRROR (for Passenger Side)


    1. A001DS0E03

      for LHD:


      1. Remove the outer mirror RH Click here.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        1 - 2 25°C (77°F) 3.6 to 4.8 Ω
    2. A001AXWE03

      for RHD:


      1. Remove the outer mirror LH Click here.

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

        Standard resistance
        Tester Connection Condition Specified Condition
        1 - 2 25°C (77°F) 3.6 to 4.8 Ω

    OK

    REPLACE OUTER MIRROR ACTUATOR ASSEMBLY (for Passenger Side) Click here

    NG

    REPLACE OUTER MIRROR (for Passenger Side) Click here