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

A01HPX1E05

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING TECHSTREAM


    1. Connect the Techstream to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the Techstream on.

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

    5. Read the display on the Techstream.

      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 RH open

      OFF: Rear door RH closed

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

      ON: Rear door LH open

      OFF: Rear door LH closed

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

    B

    INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH OR RH) Click here

    A

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

  2. INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH OR 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.
      Result
      Result Proceed to
      OK (for Rear LH) A
      OK (for Rear RH) B
      NG C

    B

    CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) Click here

    C

    REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY Click here

    A

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


    1. Disconnect the I13 main body ECU (multiplex network body ECU) connector.

    2. Disconnect the N15 rear door courtesy light switch assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N15-1 - I13-1 (LCTY) Always Below 1 Ω
      N15-1 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

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


    1. Disconnect the I13 main body ECU (multiplex network body ECU) connector.

    2. Disconnect the O16 rear door courtesy light switch assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O16-1 - I13-6 (RCTY) Always Below 1 Ω
      O16-1 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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