Pinpoint Tests AZ: The Parking Brake Warning Chime Is Inoperative
Instrumentation, Message Center and Warning Chimes
Pinpoint Tests
Pinpoint Test AZ: 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 4.8 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 4.8 km/h (3 mph), or after 90 seconds from the time the chime is activated.
NOTE: Make sure that the brake warning chime operation is verified with the vehicle moving at least 4.8 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 concern
- Speedometer concern
- IC
PINPOINT TEST AZ: THE PARKING BRAKE WARNING CHIME IS INOPERATIVE
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AZ1 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 AZ2.
No
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.
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AZ2 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 AZ3.
No
GO to Pinpoint Test R (never on) or GO to Pinpoint Test S (always on). Pinpoint Test R: The Brake Warning Indicator is Never On Pinpoint Test S: The Brake Warning Indicator is Always On
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AZ3 CARRY OUT THE PARKING BRAKE WARNING CHIME ACTIVE COMMANDS USING THE SCAN TOOL
- Enter the following diagnostic mode on the scan tool: IC DataLogger .
- Select the IC parking brake warning chime (CHIME_P_BRK) active commands. Command the parking brake warning chime on.
- Does the parking brake warning chime sound?
Yes
GO to AZ4.
No
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.
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AZ4 CHECK THE SPEEDOMETER FOR CORRECT OPERATION
- Drive the vehicle and verify that the speedometer is operating correctly.
- Does the speedometer operate correctly?
Yes
GO to AZ5.
No
GO to Pinpoint Test I. Pinpoint Test I: The Speedometer Is Inoperative
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AZ5 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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