POWER MIRROR CONTROL SYSTEM (w/ Memory) Mirror Heater does not Operate with Rear Defogger Switch

DESCRIPTION

When the rear defogger switch is operated, the mirror heater signal is sent to the air conditioning amplifier assembly and then to each outer mirror control ECU assembly via CAN communication. Based on this signal, the outer mirror control ECU assemblies operate the mirror heaters.

WIRING DIAGRAM

A01G56BE06

INSPECTION PROCEDURE

Note


  • The power mirror control system is a part of the CAN communication system. This system features shared communication wiring that reduces the wiring complexity of the communication lines. The first step in any repair is to confirm the proper operation of the communication system. Proceed with troubleshooting after the communication has been verified (See CAN Communication System, Click here.

  • The mirror heater operation is linked with the defogger system or wiper and washer system. Confirm that these systems are operating normally before starting the inspection.

  • If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.

PROCEDURE


  1. CHECK WINDOW DEFOGGER SYSTEM


    1. Check window defogger system operation Click here.

      OK
      Window defogger system is normal.

    NG

    GO TO WINDOW DEFOGGER SYSTEM Click here

    OK

  2. PERFORM ACTIVE TEST USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Mirror L or Mirror R / Active Test.

    5. Perform an Active Test according to the display on the GTS.

      Mirror L / Mirror R
      Tester Display Test Part Control Range Diagnostic Note
      Mirror Heater Mirror heater operation ON / OFF

      • Operate with engine switch on (IG) and the vehicle stopped.

      • This test turns the mirror heater on or off.

      • Mirror heater operation can be confirmed by touch.
      Result
      Result Proceed to
      Mirror heater operation on both mirrors is not normal A
      Mirror heater operation on front passenger door mirror is not normal B
      Mirror heater operation on driver door mirror is not normal C

    B

    INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) Click here

    C

    INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) Click here

    A

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

  3. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR)


    1. A01G55SE29
      Text in Illustration
      *a

      Component without harness connected

      (Outer Rear View Mirror Assembly (Front Passenger Door))

      Remove the outer rear view mirror assembly (front passenger door) Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4 (+) - 12 (-) 25°C (77°F) 7.6 to 11.4 Ω

    NG

    INSPECT OUTER MIRROR RH Click here

    OK

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FRONT PASSENGER DOOR) Click here

  4. INSPECT OUTER MIRROR RH


    1. A01G731E01
      Text in Illustration
      *a

      Component without harness connected

      (Outer Mirror RH)

      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) 7.6 to 11.4 Ω

    NG

    REPLACE OUTER MIRROR RH Click here

    OK

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (FRONT PASSENGER DOOR) Click here

  5. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR)


    1. A01G55SE29
      Text in Illustration
      *a

      Component without harness connected

      (Outer Rear View Mirror Assembly (Driver Door))

      Remove the outer rear view mirror assembly (driver door) Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4 (+) - 12 (-) 25°C (77°F) 7.6 to 11.4 Ω

    NG

    INSPECT OUTER MIRROR LH Click here

    OK

    REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (DRIVER DOOR) Click here

  6. INSPECT OUTER MIRROR LH


    1. A01G9PUE01
      Text in Illustration
      *a

      Component without harness connected

      (Outer Mirror LH)

      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) 7.6 to 11.4 Ω

    NG

    REPLACE OUTER MIRROR LH Click here

    OK

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY (DRIVER DOOR) Click here