Pinpoint Tests AO: The Parking Brake Warning Chime Is Inoperative

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test AO: The Parking Brake Warning Chime Is Inoperative

Normal Operation

The Instrument Cluster (IC) uses vehicle speed data sent from the PCM over the High Speed Controller Area Network (HS-CAN) and parking brake switch status sent from the Smart Junction Box (SJB) over the Medium Speed Controller Area Network (MS-CAN) to determine when to turn on the parking brake warning indicator.

The parking brake warning chime sounds if the ignition switch is in the ON position, the parking brake is engaged, and the vehicle speed is greater than 5 km/h (3 mph). The parking brake warning chime stops sounding and resets if the parking brake is released, the ignition switch is not in the ON position, if the vehicle speed is below 5 km/h (3 mph), or after 90 seconds from the time the chime is activated.

NOTE: Be sure that the brake warning chime operation is verified with the vehicle moving at least 5 km/h (3 mph) with the parking brake slightly applied (just enough to turn the brake warning indicator on).

This pinpoint test is intended to diagnose the following:

- Brake warning indication
- IC



PINPOINT TEST AO: THE PARKING BRAKE WARNING CHIME IS INOPERATIVE

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AO1 CHECK THE KEY-IN-IGNITION WARNING CHIME OPERATION


- Ignition OFF.
- With the ignition switch in the OFF position and the key in the ignition lock cylinder, open the LH front door and observe the key-in-ignition warning chime operation.
- Does the key-in-ignition warning chime operate correctly?

Yes
GO to AO2.

No
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.

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AO2 CHECK THE BRAKE WARNING INDICATOR FOR CORRECT OPERATION


- Ignition ON.
- Apply and release the parking brake.
- Does the brake warning indicator turn on when applied and turn off when released?

Yes
GO to AO3.

No
Go To Pinpoint Test J (never on) or Go To Pinpoint Test K (always on). Pinpoint Test J: The Brake Warning Indicator Is Never On Pinpoint Test K: The Brake Warning Indicator Is Always On

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AO3 CHECK THE SPEEDOMETER FOR CORRECT OPERATION


- Ignition ON.
- Drive the vehicle and verify that the speedometer is operating correctly.
- Does the speedometer operate correctly?

Yes
GO to AO4.

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

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AO4 RETRIEVE THE RECORDED DTCs FROM THE SJB SELF-TEST


- Check for recorded SJB DTCs from the self-test.
- Are any DTCs recorded?

Yes
REFER to Body Control Systems.

No
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.

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