DTC C056E
Diagnostic Instructions
DTC Descriptors
| DTC C056E 41: Electronic Control Unit Software
Not Programmed |
| DTC C056E 42: Electronic Control Unit Software
Calibration Not Programmed |
| DTC C056E 5A: Electronic Control Unit Software
Not Plausible |
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
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.
Conditions for Running the DTC
Ignition OFF, ACCESSORY, or RUN mode.
Conditions for Setting the DTC
The parking brake control module has detected an internal
software malfunction.
Actions Taken When DTC Sets
C056E 41, C056E 5A
| • |
The electric parking brake is
disabled. |
| • |
A message and/or a warning
indicator may be displayed. |
C056E 42
| • |
The electric parking brake
functionality is degraded. |
| • |
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. |
| • |
The condition for the DTC is
no longer present. |
| • |
The latest software and
calibrations are programmed into 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 C056E is not set.
If the DTC is set, perform the
Electronic Parking Brake Control Module Programming and Setup .
If the DTC resets, replace the K83 Parking Brake Control Module.
Repair Instructions
Perform the
Diagnostic Repair Verification
|
