Pinpoint Tests AC: The Parking Brake On Warning Chime Does Not Operate Correctly

Instrumentation and Warning Chimes

Pinpoint Tests

Pinpoint Test AC: The Parking Brake On Warning Chime Does Not Operate Correctly

Refer to wiring Diagram Set 60, Instrument Cluster for schematic and connector information. Diagrams By Number

Normal Operation

The parking brake on warning chime warns that the parking brake is engaged when the vehicle is in motion. The parking brake warning chime sounds if the ignition key is in the ON position, the parking brake is engaged, and the vehicle speed is greater than 5 km/h (3 mph). The Instrument Cluster (IC) receives the vehicle speed data from the PCM over the High Speed Controller Area Network (HS-CAN) communication bus. The IC uses the ignition RUN/START position status to determine ignition key position. The IC monitors these messages and operates the chime when all 3 inputs are received.

This pinpoint test is intended to diagnose the following:

- IC



PINPOINT TEST AC: THE PARKING BRAKE ON WARNING CHIME DOES NOT OPERATE CORRECTLY

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AC1 CHECK THE SPEEDOMETER OPERATION


- Ignition ON.
- Monitor the speedometer operation while driving over 5 km/h (3 mph).
- Does the speedometer operate correctly?

Yes
GO to AC2.

No
Go To Pinpoint Test D. Pinpoint Test D: The Speedometer Is Inoperative/Inaccurate

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AC2 CHECK THE PARKING BRAKE WARNING INDICATOR OPERATION


- Apply and release the parking brake.
- Monitor the brake warning indicator while applying and releasing the parking brake.
- Does the brake warning indicator turn on when the parking brake is applied and turn off when released?

Yes
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.

No
Go To Pinpoint Test I. Pinpoint Test I: The Brake Warning Indicator Is Never On

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