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 assembly.

WIRING DIAGRAM

A003KPXE04
*a Rear Door Courtesy Light Switch Assembly LH
*b Rear Door Courtesy Light Switch Assembly RH
*c Instrument Panel Junction Block Assembly
*d Main Body ECU (Multiplex Network Body ECU)

CAUTION / NOTICE / HINT

Note

Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.

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 Data List according to the display on the GTS.


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

      OFF: Rear door RH closed

      ON: Rear door RH open

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

      OFF: Rear door LH closed

      ON: Rear door LH open

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      RR Door Courtesy SW
      RL Door Courtesy SW
      OK
      Normal conditions listed above are displayed.
      Result
      Result Proceed to
      OK A
      "RR Door Courtesy SW" is not normal B
      "RL Door Courtesy SW" is not normal C

    A

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

    C

    INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH Click here

    B

  2. INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH


    1. Remove the rear door courtesy light switch assembly RH.

      Click here

    2. Inspect the rear door courtesy light switch assembly RH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the 3A instrument panel junction block assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N47-1 - 3A-31 Always Below 1 Ω
      N47-1 or 3A-31 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    A003OLGC02
    *a

    Component without harness connected

    (Instrument Panel Junction Block Assembly)

    		 - -

    1. Remove the instrument panel junction block assembly.

      Click here

    2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3A-31 - MB-2 (RCTY) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

  5. INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH


    1. Remove the rear door courtesy light switch assembly LH.

      Click here

    2. Inspect the rear door courtesy light switch assembly LH.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the 3H instrument panel junction block assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N12-1 - 3H-24 Always Below 1 Ω
      N12-1 or 3H-24 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    A003KRRC03
    *a

    Component without harness connected

    (Instrument Panel Junction Block Assembly)

    		 - -

    1. Remove the instrument panel junction block assembly.

      Click here

    2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3H-24 - MB-13 (LCTY) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here