PRE-RELEASE
DTC C028F
| DTC C028F |
| Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
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| DTC Descriptors |
DTC C028F 01
Handbrake solenoid valve regulator circuit. Short to Battery
DTC C028F 02
Handbrake solenoid valve regulator circuit. Short to Ground
DTC C028F 08
Handbrake solenoid valve regulator circuit. Performance signal invalid.
| Circuit/System Description |
The parking brake control module has an internal motor, apply actuator, release actuator, and temperature sensor. The parking brake control module also contains the logic for applying and releasing the park brake when commanded by the park brake control switch. When the parking brake control module receives a signal from the switch the internal circuit board temperature is checked to verify it is within operating range before the control module performs the requested operation. The parking brake control module contains an internal park brake solenoid actuator, and performs diagnostics on the solenoid actuator circuitry to verify it is functioning properly
| Conditions for Running the DTC |
Ignition OFF, ACCESSORY, or RUN mode.
| Conditions for Setting the DTC |
The parking brake control module detects an internal park brake solenoid malfunction.
| Action Taken When the DTC Sets |
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The electric parking brake is disabled, one release allowed.
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A message and/or a warning indicator may be displayed.
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| Conditions for Clearing the DTC |
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The parking brake control module clears the history DTC when a current DTC is not detected in 40 ignition cycles.
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The condition for setting the DTC is no longer present.
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| Reference Information |
Schematic Reference
Park Brake System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Electronic Parking Brake Control Module Description
Electrical Information Reference
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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Scan Tool Reference
Control Module References for scan tool information
| Circuit/System Verification |
Verify that DTC C028F is not set.
| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for parking brake control module replacement, setup, and programming
