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

DESCRIPTION

When the rear window defogger switch on the air conditioning control assembly is pressed, the operation signal is transmitted to the air conditioning amplifier assembly through a LIN communication line. When the air conditioning amplifier assembly receives the signal, it turns on the integration relay to operate the mirror heaters.

WIRING DIAGRAM

A003TZ4E01

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Air Conditioner / Active Test.

    5. Perform an Active Test according to the display on the intelligent tester.

      Air Conditioner (Air Conditioning Amplifier Assembly)
      Tester Display Test Part Control Range Diagnostic Note
      Mirror Heater Relay Mirror heater ON/OFF -
      Result
      Result Proceed to
      Mirror heater operation on both mirrors is not normal A
      Mirror heater operation on RH side mirror is not normal B
      Mirror heater operation on LH side mirror is not normal C

    B

    CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR RH - INTEGRATION RELAY, GROUND) Click here

    C

    CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR LH - INTEGRATION RELAY, GROUND)) Click here

    A

  2. CHECK DEFOGGER SYSTEM


    1. Check the rear window defogger operation.

      OK
      The rear window defogger operated normally.

    NG

    GO TO WINDOW DEFOGGER SYSTEM Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR RH - INTEGRATION RELAY, GROUND)


    1. Disconnect the H10 outer rear view mirror assembly RH connector.

    2. Disconnect the 1I engine room relay block connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1I-2 (MHTR) - H10-7 (+) Always Below 1 Ω
      H10-8 (-) - Body ground Always Below 1 Ω
      1I-2 (MHTR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR LH - INTEGRATION RELAY, GROUND)


    1. Disconnect the I10 outer rear view mirror assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1I-2 (MHTR) - I10-7 (+) Always Below 1 Ω
      I10-8 (-) - Body ground Always Below 1 Ω
      1I-2 (MHTR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE NO.1 INTEGRATION RELAY Click here

  5. CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR RH - INTEGRATION RELAY, GROUND)


    1. Disconnect the integration relay connector.

    2. Disconnect the H10 outer rear view mirror assembly RH connector.

    3. Disconnect the I10 outer rear view mirror assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H10-8 (-) - Body ground Always Below 1 Ω
      H10-7 (+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH Click here

  6. CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR LH - INTEGRATION RELAY, GROUND))


    1. Disconnect the integration relay connector.

    2. Disconnect the I10 outer rear view mirror assembly LH connector.

    3. Disconnect the H10 outer rear view mirror assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I10-8 (-) - Body ground Always Below 1 Ω
      I10-7 (+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH Click here