LIGHTING SYSTEM Door Mirror Foot Light Circuit

DESCRIPTION

The outer mirror control ECU assembly controls the outer rear view mirror assembly (footwell) lights.

WIRING DIAGRAM

B001A66E06

CAUTION / NOTICE / HINT

Note


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

  • The lighting system uses CAN communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting.

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (FR FOOT LIGHT)


    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 / Active Test.

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

      Mirror
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Fr Foot Light

      Turns on the outer mirror foot lights/

      ON or OFF

      ON: Footwell light comes on

      OFF: Footwell light off

      		 -
      OK
      Outer rear view mirror assembly (footwell light) comes on.

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (OUTER MIRROR CONTROL ECU ASSEMBLY WAS DEFECTIVE)

    NG

  2. INSPECT OUTER REAR VIEW MIRROR ASSEMBLY


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

    2. A01WVZBE02
      Text in Illustration
      *a

      Component without harness connected

      (Outer Rear View Mirror Assembly RH)
      *b

      Component without harness connected

      (Outer Rear View Mirror Assembly LH)

      Connect a positive (+) lead from the battery to terminal 18 (LP) and a negative (-) lead to terminal 17 (-).

    3. Check that each function of the outer mirror footwell light operates normally.

      OK
      Outer mirror footwell light illuminate.
      Result
      Result Proceed to
      OK A
      NG (RH Side) B
      NG (LH Side) C

    B

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH Click here

    C

    REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH Click here

    A

  3. CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR ASSEMBLY - OUTER MIRROR CONTROL ECU ASSEMBLY)


    1. Disconnect the outer mirror control ECU assembly I37 and I40 connector.

    2. Disconnect the outer rear view mirror Assembly I33 and I35 connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      I35-18 (MLP) - I40-2 (LP) Always Below 1 Ω
      I35-17 (-) - I40-12 (HTR-) Always Below 1 Ω
      I35-18 (MLP) or I40-2 (LP) - Body ground Always 10 kΩ or higher
      I33-18 (MLP) - I37-2 (LP) Always Below 1 Ω
      I33-17 (-) - I37-12 (HTR-) Always Below 1 Ω
      I33-18 (MLP) or I37-2 (LP) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK OUTER MIRROR CONTROL ECU ASSEMBLY


    1. Replace the outer mirror control ECU assembly with a new or known good one Click here.

    2. Check that each function of the outer mirror footwell light operates normally.

      OK
      Outer mirror footwell light illuminate.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    A

    END (OUTER MIRROR CONTROL ECU ASSEMBLY WAS DEFECTIVE)

    B

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    C

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here