REAR POWER SEAT CONTROL SYSTEM Parking Brake Switch Circuit

DESCRIPTION

This circuit includes the parking brake switch assembly and fold seat control ECU.

WIRING DIAGRAM

A01DSAFE01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK BRAKE WARNING LIGHT


    1. Check that the brake warning light comes on when the parking brake is applied and goes off when the parking brake is released.

      OK
      The brake warning light operates as specified above.

    NG

    INSPECT PARKING BRAKE SWITCH ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (FOLD SEAT CONTROL ECU - PARKING BRAKE SWITCH)


    1. Disconnect the d1*1 or c1*2 ECU connector.


      • *1: for LH Side

      • *2: for RH Side

    2. Disconnect the G77 parking brake switch connector.

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

      Standard Resistance
      for LH Side
      Tester Connection Condition Specified Condition
      d1-40 (PKB1) - G77-1 Always Below 1 Ω
      d1-40 (PKB1) - Body ground Always 10 kΩ or higher
      for RH Side
      Tester Connection Condition Specified Condition
      c1-40 (PKB1) - G77-1 Always Below 1 Ω
      c1-40 (PKB1) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  3. INSPECT PARKING BRAKE SWITCH ASSEMBLY


    1. A01DSXEE02

      Remove the parking brake switch assembly Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - Switch body On (Shaft is not pressed) Below 1 Ω
      1 - Switch body Off (Shaft is pressed) 10 kΩ or higher

    NG

    REPLACE PARKING BRAKE SWITCH ASSEMBLY Click here

    OK

    REPLACE FOLD SEAT CONTROL ECU Click here