DTC C028B
Diagnostic Instructions
DTC Descriptors
| DTC C028B 08: Park Brake Motor Position Sensor
Signal Performance-Signal Invalid |
| DTC C028B 26: Park Brake Motor Position Sensor
Signal Low Frequency |
| DTC C028B 29: Park Brake Motor Position Sensor
Signal Too Few Pulses |
| DTC C028B 2A: Park Brake Motor Position Sensor
Signal Too Many Pulses |
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 parking brake when commanded by the park brake
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
also contains an internal park brake motor position sensor which
monitors the park brake motor position.
The Park Brake Motor Position Sensor is an internal sensor to
the park brake control module, this sensor is used to monitor the
park brake motor position.
Conditions for Running the DTC
Ignition OFF, ACCESSORY, or RUN mode.
Conditions for Setting the DTC
The parking brake control module detects an internal motor
position sensor signal malfunction.
Action Taken When the DTC Sets
| • |
The electric parking brake is
disabled, one release allowed. |
| • |
A message and/or a warning
indicator may be displayed. |
Conditions for Clearing the DTC
| • |
The parking brake control
module clears the history DTC when a current DTC is not detected in
40 ignition cycles. |
| • |
Calibrate the parking brake
control module. |
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
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Verify DTC C028B is not set.
If DTC is set, perform the Parking Brake Calibration procedure in
Configuration/Reset Functions. If the DTC resets replace the K83
Parking Brake Control Module.
Repair Instructions
Perform the
Diagnostic Repair Verification
|
