Circuit Description
The body control module (BCM) monitors the status of the park brake. When the BCM receives a ground input from the park brake switch, a serial data message is sent to the instrument panel cluster (IPC) requesting illumination of the red brake warning indicator.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
This code is set when the fallowing criteria are met.
| • | The BCM receives a ground from the park brake switch. |
| • | The vehicle speed is greater than 8 km/h (5 mph). |
Action Taken When the DTC Sets
This DTC is set for information purposes only and does not effect operation of the vehicle.
Conditions for Clearing the DTC
| • | The condition for the DTC is no longer present and the DTC is cleared with a scan tool. |
| • | The electronic brake control module (EBCM) automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
Diagnostic Aids
This DTC may indicate that the vehicle has been driven with the park brake engaged. If this DTC is set with a complaint of an intermittent red brake warning indicator, check for a intermittent short to ground on the park brake signal circuit. Refer to Inducing Intermittent Fault Conditions in Wiring Systems.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Body Control System Schematics Connector End View Reference: Computer/Integrating Systems Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 |
Does the red brake warning lamp turn OFF? | Go to Diagnostic Aids | Go to Brake Warning Indicator Always On in Hydraulic Brakes |
