LIGHTING SYSTEM Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU RH detects the condition of each door courtesy switch and sends a signal to each ECU via the multiplex communication circuit.

WIRING DIAGRAM

A0161SIE06
A0161SIE07

INSPECTION PROCEDURE

Tech Tips

The procedure is the same for each door courtesy switch circuit. First, inspect the suspected door courtesy switch circuit.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

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

    5. Read the display on the intelligent tester.

      Body (Main Body ECU RH)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D door Courtesy SW Driver side door courtesy switch signal / ON or OFF

      ON: Driver side door is open

      OFF: Driver side door is closed

      		 -
      P door Courtesy SW Passenger side door courtesy switch signal / ON or OFF

      ON: Passenger side door is open

      OFF: Passenger side door is closed

      		 -
      Rear door Courtesy SW Rear (LH and RH) door courtesy switch / ON or OFF

      ON: Rear door (LH or RH) is open

      OFF: Rear door (LH and RH) is closed

      		 -
      OK
      Condition sign can be displayed.
      Result
      Result Proceed to
      OK A
      Driver side door courtesy switch does not operate B
      Front passenger side door courtesy switch does not operate C
      Both rear door courtesy switches do not operate D

    B

    INSPECT FRONT DOOR COURTESY SWITCH (LH OR RH) Click here

    C

    INSPECT FRONT DOOR COURTESY SWITCH (LH OR RH) Click here

    D

    INSPECT DOOR COURTESY SWITCH (REAR LH AND REAR RH) Click here

    A

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  2. INSPECT FRONT DOOR COURTESY SWITCH (LH OR RH)

    Inspect the front door courtesy switch LH*1 or RH*2 Click here.

    OK
    Door courtesy switch is normal.

    Tech Tips


    • *1: for LHD

    • *2: for RHD


    NG

    REPLACE FRONT DOOR COURTESY SWITCH (LH OR RH) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY SWITCH (LH OR RH) - MAIN BODY ECU RH)


    1. A015ZIKE04

      Disconnect the P1 ECU connector.

    2. Disconnect the Q11*1 or P9*2 switch connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      P1-14 (DCTY) - Q11-1 Always Below 1 Ω
      P1-14 (DCTY) or Q11-1 - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      P1-14 (DCTY) - P9-1 Always Below 1 Ω
      P1-14 (DCTY) or P9-1 - Body ground Always 10 kΩ or higher

      Tech Tips


      • *1: for LHD

      • *2: for RHD


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)

  4. INSPECT FRONT DOOR COURTESY SWITCH (LH OR RH)

    Inspect the front door courtesy switch RH*1 or LH*2 Click here.

    OK
    Door courtesy switch is normal.

    Tech Tips


    • *1: for LHD

    • *2: for RHD


    NG

    REPLACE FRONT DOOR COURTESY SWITCH (LH OR RH) Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY SWITCH (LH OR RH) - MAIN BODY ECU RH)


    1. A015Z2NE28

      Disconnect the J75 ECU connector.

    2. Disconnect the P9*1 or Q11*2 switch connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      J75-23 (PCTY) - P9-1 Always Below 1 Ω
      J75-23 (PCTY) or P9-1 - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      J75-23 (PCTY) - Q11-1 Always Below 1 Ω
      J75-23 (PCTY) or Q11-1 - Body ground Always 10 kΩ or higher

      Tech Tips


      • *1: for LHD

      • *2: for RHD


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)

  6. INSPECT DOOR COURTESY SWITCH (REAR LH AND REAR RH)

    Inspect the rear door courtesy switches LH and RH Click here.

    OK
    Door courtesy switches are normal.

    NG

    REPLACE DOOR COURTESY SWITCH (REAR LH OR REAR RH) Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (DOOR COURTESY SWITCH (REAR LH OR REAR RH) - MAIN BODY ECU RH)


    1. A0162ZXE10

      Check the wire harness between the cowl side junction block RH and rear door courtesy switch LH.


      1. Disconnect the RA junction block connector.

      2. Disconnect the Q17 switch connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        RA-11 (LCTY) - Q17-1 Always Below 1 Ω
        RA-11 (LCTY) or Q17-1 - Body ground Always 10 kΩ or higher
    2. A0162Y2E02

      Check the wire harness between the main body ECU RH and rear door courtesy switch RH.


      1. Disconnect the P1 ECU connector.

      2. Disconnect the P16 switch connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        P1-16 (RCTY) - P16-1 Always Below 1 Ω
        P1-16 (RCTY) or P16-1 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)