LIGHTING SYSTEM Rear Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) detects the condition of the rear door courtesy light switch using this circuit.

WIRING DIAGRAM

A005D26E05
*a Rear Door Courtesy Light Switch Assembly LH
*b Rear Door Courtesy Light Switch Assembly RH
*c Main Body ECU (Multiplex Network Body ECU)

PROCEDURE


  1. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Data List.

    5. Read the display on the GTS.

      Main Body
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      RR Door Courtesy SW Rear door courtesy light switch RH signal/ON or OFF

      ON: Rear door LH open and rear door RH closed

      ON: Rear door LH closed and rear door RH open

      ON: Rear door LH and rear door RH open

      OFF: Rear door LH and rear door RH closed

      		 -
      RL Door Courtesy SW Rear door courtesy light switch LH signal/ON or OFF

      ON: Rear door LH open and rear door RH closed

      ON: Rear door LH closed and rear door RH open

      ON: Rear door LH and rear door RH open

      OFF: Rear door LH and rear door RH closed

      		 -
      OK
      Normal conditions listed above are displayed.
      Result
      Result Proceed to
      OK A
      Rear door courtesy light switch LH and RH do not operate B

    A

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    B

  2. INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH AND RH)


    1. Remove the rear door courtesy light switch assembly Click here.

    2. Inspect the rear door courtesy light switch assembly Click here.

      OK
      Rear door courtesy light switch assembly is normal.

    NG

    REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - REAR COURTESY LIGHT SWITCH ASSEMBLY)


    1. Disconnect the L201 main body ECU (multiplex network body ECU) connector.

    2. Disconnect the R13 rear door courtesy light switch assembly LH connector.

    3. Disconnect the S10 rear door courtesy light switch assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L201-6 (LRCY) - R13-1 Always Below 1 Ω
      L201-6 (LRCY) - Body ground Always 10 kΩ or higher
      L201-6 (LRCY) - S10-1 Always Below 1 Ω

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR