Parking Brake Switch Circuit [06/2018 - 03/2019]: Procedure
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- 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.
Result
Proceed to OK NG
Result:
NG
GO TO ELECTRIC PARKING BRAKE SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]
Result:
OK
See step 2
- 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 (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - RADIO AND DISPLAY RECEIVER ASSEMBLY)
- Disconnect the I56 radio and display receiver assembly connector.
- Disconnect the A51 skid control ECU (brake actuator assembly) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition I56-20 (PKB) - A51-35 (PKB) Always Below 1 Ω I56-20 (PKB) or A51-35 (PKB) - Body ground Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [06/2018 - 01/2019] , or refer to PROBLEM SYMPTOMS TABLE [01/2019 - 03/2019]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR