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

DESCRIPTION

w/ Navigation System:

When the window defogger switch, which is built into the multi-display assembly, is operated, the operation signals are transmitted to the A/C amplifier assembly through AVC-LAN and BEAN. When the A/C amplifier assembly receives the signals, it turns on the MIR HTR relay to operate the mirror heater.

w/o Navigation System:

When the window defogger switch, which is built into the multi-display assembly, is operated, the operation signals are transmitted to the A/C amplifier assembly through AVC-LAN and BEAN. When the A/C amplifier assembly receives the signals, it turns on the MIR HTR relay to operate the mirror heater.

Note

The power mirror control system is a part of the multiplex 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 Multiplex Communication System: Click here.

WIRING DIAGRAM

A015ZTOE02

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Check for multiplex communication system DTCs Click here.

      Result
      Result Proceed to
      DTC is not output (for w/ navigation system) A
      DTC is not output (for w/o navigation system) B
      Multiplex communication system DTC is output C

    B

    CHECK FOR DTC Click here

    C

    GO TO MULTIPLEX COMMUNICATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

    A

  2. CHECK FOR DTC (NAVIGATION SYSTEM)


    1. Check for navigation system DTCs Click here.

      Result
      Result Proceed to
      Navigation system DTC is output A
      Navigation system DTC is not output B

    B

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER Click here

    A

    GO TO NAVIGATION SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

  3. CHECK FOR DTC


    1. Check for audio and visual system DTCs Click here.

      Result
      Result Proceed to
      Audio and visual system DTC is not output A
      Audio and visual system DTC is output B

    B

    GO TO AUDIO AND VISUAL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

    A

  4. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

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

    4. Perform an Active Test according to the display on the tester.

      Air Conditioner
      Tester Display Test Part Control Range Diagnostic Note
      Mirror Heater Mirror heater operation OFF/ON -
      Result
      Result Proceed to
      Mirrors become warm (w/ Navigation System) A
      Mirrors become warm (w/o Navigation System) B
      Mirrors do not become warm C

    B

    REPLACE INTEGRATION CONTROL AND PANEL Click here

    C

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER Click here

    A

  5. REPLACE MULTI-DISPLAY


    1. Replace the multi-display Click here.


    NEXT

  6. CONFIRM MIRROR HEATER OPERATION


    1. Turn the engine switch on (IG).

    2. Press the window defogger switch, and check that the mirror heaters operate.

      OK
      Mirrors become warm.

    NG

    REPLACE A/C AMPLIFIER ASSEMBLY

    OK

    END (MULTI-DISPLAY DEFECTIVE)

  7. REPLACE INTEGRATION CONTROL AND PANEL


    1. Replace the integration control and panel Click here.


    NEXT

  8. CONFIRM MIRROR HEATER OPERATION


    1. Turn the engine switch on (IG).

    2. Press the window defogger switch, and check that the mirror heaters operate.

      OK
      Mirrors become warm.

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    OK

    END (INTEGRATION CONTROL AND PANEL DEFECTIVE)

  9. REPLACE RADIO RECEIVER ASSEMBLY


    1. Replace the radio receiver assembly Click here.


    NEXT

  10. CONFIRM MIRROR HEATER OPERATION


    1. Turn the engine switch on (IG)

    2. Press the window defogger switch, and check that the mirror heaters operate.

      OK
      Mirrors become warm.

    NG

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    OK

    REPLACE END (RADIO RECEIVER DEFECTIVE)

  11. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Select the Active Test, use the intelligent tester to issue a control command, and then check MIR HTR relay operation.

    2. Check that operation sound of the MIR HTR relay can be heard.

      OK
      Operation sound of the MIR HTR relay can be heard.

    NG

    INSPECT MIR HTR RELAY Click here

    OK

  12. INSPECT MIR HTR RELAY

    Click here.


    NG

    REPLACE MIR HTR RELAY

    OK

  13. CHECK HARNESS AND CONNECTOR (MIR HTR RELAY - BATTERY)


    1. A0160PTE01

      Disconnect the MIR HTR relay.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      Relay block terminal 5 - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (MIR HTR RELAY - OUTER REAR VIEW MIRROR)

    OK

  14. CHECK HARNESS AND CONNECTOR (MIR HTR RELAY - OUTER REAR VIEW MIRROR)


    1. A015YOPE02

      Disconnect the MIR HTR relay and outer rear view mirror assembly connectors.

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

      Standard Resistance
      Outer Rear View Mirror Assembly LH
      Tester Connection Condition Specified Condition
      Relay block terminal 3 - M15-3 (+) Always Below 1 Ω
      Relay block terminal 3 - Body ground Always 10 kΩ or higher
      M15-9 (-) - Body ground Always Below 1 Ω
      Outer Rear View Mirror Assembly RH
      Tester Connection Condition Specified Condition
      Relay block terminal 3 - L14-3 (+) Always Below 1 Ω
      Relay block terminal 3 - Body ground Always 10 kΩ or higher
      L14-9 (-) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (MIR HTR RELAY - OUTER REAR VIEW MIRROR)

    OK

    REPLACE OUTER REAR VIEW MIRROR Click here

  15. INSPECT MIR HTR RELAY

    Click here.


    NG

    REPLACE HEATER MIRROR RELAY

    OK

  16. CHECK HARNESS AND CONNECTOR (MIR HTR RELAY - BATTERY)


    1. A0160PTE01

      Disconnect the MIR HTR relay.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      Relay block terminal 1 - Body ground Engine switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (MIR HTR RELAY - OUTER REAR VIEW MIRROR)

    OK

  17. CHECK HARNESS AND CONNECTOR (MIR HTR RELAY - A/C AMPLIFIER ASSEMBLY)


    1. A015YXRE03

      Disconnect the MIR HTR relay and A/C amplifier assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Relay block terminal 2 - J58-2 (MHTR) Always Below 1 Ω
      Relay block terminal 2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE MIR HTR FUSE OR HARNESS

    OK

    REPLACE AIR CONDITIONING AMPLIFIER