Inspection Procedure
WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK BRAKE WARNING LIGHT
- 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.
OK: Go to step 3
NG: Go to Next Step
- Check that the brake warning light comes on when the parking brake is applied and goes off when the parking brake is released.
- INSPECT PARKING BRAKE SWITCH
- Remove the parking brake switch.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition Switch connector - Switch body ON (When shaft is not pressed) Below 1 Ω Switch connector - Switch body OFF (When shaft is pressed) 10 kΩ or higher
NG: REPLACE PARKING BRAKE SWITCH
OK: Go to Next Step
- CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - PARKING BRAKE SWITCH)
- Disconnect the multi-display connector E62 and parking brake switch connector A32.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition PKB - A32-1 Always Below 1 Ω PKB - Body ground Always 10 kΩ or higher
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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE