DTC P057B-P057E
Diagnostic Instructions
DTC Descriptors
| DTC P057B 00: Brake Pedal Position Sensor
Performance |
| DTC P057C 00: Brake Pedal Position Sensor
Circuit Low Voltage |
| DTC P057D 00: Brake Pedal Position Sensor
Circuit High Voltage |
| DTC P057E 00: Brake Pedal Position Sensor
Circuit Erratic |
Circuit/System Description
The body control module (BCM) monitors the brake pedal position
sensor. When the brake pedal is applied, the BCM detects a
predetermined voltage signal. The BCM sends a serial data message
to the engine control module (ECM) indicating the status of the
stop lamps.
Conditions for Running the DTC
The engine is ON.
Conditions for Setting the DTC
| • |
The ECM receives an invalid
brake pedal status serial data message from the BCM. |
| • |
This diagnostic runs
continuously. |
Action Taken When the DTC Sets
| • |
The malfunction indicator lamp
(MIL) will not illuminate. |
| • |
The cruise control system is
disabled. |
Conditions for Clearing the DTC
| • |
The condition responsible for
setting the DTC no longer exists. |
| • |
A history DTC will clear after
40 malfunction free ignition cycles have occurred. |
Reference Information
Schematic Reference
Exterior Lights Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Exterior Lighting Systems Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
| 1. |
Ignition ON, verify that DTC
C0277 is not present in the BCM. |
| 2. |
Observe the stop lamps while
applying and releasing the brake pedal. Verify the stop lamps
operate properly. |
| 3. |
Replace the module which sets
the DTC and verify the DTC does not reset. |
| ⇒ |
If the DTC resets replace the K9 Body Control
Module. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
Control Module References for control module replacement,
setup, and programming
|
