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Home >> Lexus >> 2005 >> ES 330 >> Repair and Diagnosis >> External Pages >> Different car >> Section 124 (Lighting System - Diagnostics) >> Lighting System >> Parking Brake Switch Circuit >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Start the inspection from step  1 in the case of using the hand-held tester, and start from step  2 in the case of not using the hand-held tester.

  1. READ VALUE OF HAND-HELD TESTER 
    1. Connect the hand-held tester to DLC3.
    2. Turn the ignition switch ON and push the hand-held tester main switch ON.
    3. Select the items below in the DATA LIST, and read the displays on the hand-held tester.

    BODY NO.1: 

    DIAGNOSIS PROCEDURE (BODY NO. 1)

    Item Measurement Item/Display (Range) Normal Condition Diagnostic Note
    PARKING BRAKE SW Parking brake SW signal/ON or OFF ON: Parking brake pedal is ON OFF: Parking brake pedal is OFF -
    1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE   ) 
    2. NG: GO TO NEXT STEP 
  2. INSPECT PARKING BRAKE SWITCH ASSY 
    1. Check that there is continuity between the terminal and the body ground when parking brake switch is operated.

      Standard: 

      ON (When shaft is pressed): No continuity 

      OFF (When shaft is not pressed): Continuity 

    1. NG: REPLACE PARKING BRAKE SWITCH ASSY 
    2. OK: GO TO NEXT STEP 
  3. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the 1K connector from instrument panel junction block assy.
    2. Check the continuity between the terminal 1K-10 of the instrument panel junction block assy connector side and body ground.

      Standard: 

      INSTRUMENT PANEL JUNCTION BLOCK ASSY CONNECTOR SIDE AND BODY GROUND

      Tester connection Condition Specified condition
      1K - 10 - Body ground Shaft of parking brake switch is pressed No continuity
      1K - 10 - Body ground Shaft of parking brake switch is not pressed Continuity
    Fig 1: Checking Harness And Connector
    G02630050Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE