THEFT DETERRENT SYSTEM Door Courtesy Switch Circuit

DESCRIPTION

The theft body ECU receives a door open or closed signal from front door courtesy light switch and combination meter assembly.

WIRING DIAGRAM

B003LUCE03

CAUTION / NOTICE / HINT

Note

If the body ECU has been replaced, it is necessary to initialize the body ECU.

Click here

PROCEDURE


  1. CHECK METER / GAUGE SYSTEM


    1. Check the meter / gauge system (door courtesy switch) is functioning normally.

      Click here

      Result
      Result
      OK
      NG

    NG

    GO TO METER / GAUGE SYSTEM Click here

    OK

  2. CHECK FRONT DOOR COURTESY SWITCH CIRCUIT


    1. Remove the body ECU.

      Click here

    2. Connect the instrument panel junction block assembly connector.

    3. Disconnect the G9 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-18 (DCTY) - Body ground Driver side door closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      G33-14 (PCTY) - Body ground Front passenger side door closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω
      Result
      Proceed to
      OK
      NG (for Driver Side)
      NG (for Passenger Side)

    NG (for Driver Side)

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    NG (for Passenger Side)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK DOOR COURTESY SWITCH SIGNAL (ACTY)


    1. B003L0ZC01
      *a

      Component with harness connected

      (Instrument Panel Junction Block Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      2Q-2 - Body ground All doors closed → any door open 11 to 14 V → Below 1 V
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  4. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BODY ECU)


    1. Remove the body ECU.

      Click here

    2. Connect the instrument panel junction block assembly connectors.

    3. Disconnect the G9 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G9-12 (DOOR) - A-21 (ACTY) Always Below 1 Ω
      G9-12 (DOOR) - Body ground Always 10 kΩ or higher
      Result
      Result
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) Click here

    OK

  5. CHECK BODY ECU


    1. Disconnect the combination meter assembly connector.

    2. B003RCTC01
      *a

      Front view of wire harness connector

      (to Combination Meter Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      G9-12 (DOOR) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPLACE BODY ECU Click here

  6. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the 2Q instrument panel junction block assembly connector.

    2. Disconnect the G9 combination meter assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G9-12 (DOOR) - 2Q-2 Always Below 1 Ω
      G9-12 (DOOR) - Body ground Always 10 kΩ or higher
      Result
      Result
      OK
      NG

    OK

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR