B2745

DTC B2745

Circuit Description
The driver may disable the traction control system (TCS) by pressing the traction control switch. The body control module (BCM) supplies a 12-volt signal on the traction control signal circuit. When the traction control switch is pressed, this voltage signal is grounded.

DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B2745 Traction Control Switch Circuit

Conditions for Running the DTC
The ignition is ON.

Conditions for Setting the DTC
The BCM detects low voltage on the traction control signal circuit for 60 seconds.

Action Taken When the DTC Sets
^ The BCM sends a serial data message to the electronic brake control module (EBCM) informing the EBCM that the desired TCS state cannot be determined.
^ The EBCM defaults the TCS status to enabled.

Conditions for Clearing the DTC
The DTC clears automatically from Current status when the fault is corrected. Use a scan tool to clear the DTC from History status.

Diagnostic Aids
An intermittent short to ground on the traction control signal circuit is the most likely cause of a history DTC when no problem is found. When the Conditions for Setting this DTC are present, the driver is not able to disable traction control.





Test Description
The number below refers to the step number on the diagnostic table.
3. This step tests for a short to ground within the traction control switch. DTC B0828 may set during this step.