Inspection Procedure
WARNING: This page is about a different car, the 2008 Lexus IS F. 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 it is released.
OK: The brake warning light operates as specified above.
NG: Go to step 3
OK: Go to Next Step
- Check that the brake warning light comes on when the parking brake is applied and goes off when it is released.
- CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - PARKING BRAKE SWITCH)
- Disconnect the multi-display connector and parking brake switch connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Condition Specified Condition J50-23 (PKB) - A25-1 Always Below 1 Ω J50-23 (PKB) - Body ground Always 10 kΩ or higher
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
- 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 CONDITIONTester 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 (See REMOVAL )
OK: REPAIR OR REPLACE HARNESS OR CONNECTOR