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

DESCRIPTION

When the rear window defogger switch is operated, the mirror heater signal is sent to the air conditioning amplifier assembly and then to the front multiplex network door ECU via CAN communication. Based on the signal, each front multiplex network door ECU operates the mirror heater.

WIRING DIAGRAM

A000NP3E07

CAUTION / NOTICE / HINT

Note


  • First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this problem.

  • First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no LIN communication malfunctions before troubleshooting this problem.

PROCEDURE


  1. CHECK POWER STEERING SYSTEM


    1. Using the GTS, inspect the auxiliary battery voltage reduction history item "Battery Control Count (Body ECU)" in the Data List Click here.

      Result
      Result Proceed to
      0 (no record is present) A
      Other than 0 (record is present) B

    B

    GO TO CHARGING SYSTEM Click here

    A

  2. CHECK WINDOW DEFOGGER SYSTEM


    1. Check the window defogger system operation Click here.

      OK
      Window defogger system is normal.

    NG

    GO TO WINDOW DEFOGGER SYSTEM Click here

    OK

  3. PERFORM ACTIVE TEST USING GTS (MIRROR HEATER FUNCTION)


    1. Using the GTS, perform the Active Test Click here.

      Front Left Door
      Tester Display Test Part Control Range Diagnostic Note
      Mirror Heater Mirror heater operation ON/OFF -
      Front Right Door
      Tester Display Test Part Control Range Diagnostic Note
      Mirror Heater Mirror heater operation ON/OFF -
      OK
      Mirror heater operates normally.
      Result
      Result Proceed to
      Mirror heater operation of both mirrors is normal A
      Mirror heater operation of RH side mirror is not normal B
      Mirror heater operation of LH side mirror is not normal C

    A

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    C

    INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH Click here

    B

  4. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH


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

    2. Inspect the outer rear view mirror assembly RH Click here.


    OK

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH Click here

    NG

  5. INSPECT OUTER MIRROR RH


    1. Remove the outer mirror RH Click here.

    2. Inspect the outer mirror RH Click here.


    OK

    REPLACE OUTER MIRROR ACTUATOR ASSEMBLY RH Click here

    NG

    REPLACE OUTER MIRROR RH Click here

  6. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH


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

    2. Inspect the outer rear view mirror assembly LH Click here.


    OK

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH Click here

    NG

  7. INSPECT OUTER MIRROR LH


    1. Remove the outer mirror LH Click here.

    2. Inspect the outer mirror LH Click here.


    OK

    REPLACE OUTER MIRROR ACTUATOR ASSEMBLY LH Click here

    NG

    REPLACE OUTER MIRROR LH Click here