Pinpoint Test O: The Traction Control System Cannot Be Disabled

Anti-Lock Control

Pinpoint Test O: The Traction Control System Cannot Be Disabled

Refer to Wiring Diagram Set 60, Instrument Cluster for schematic and connector information Electrical Diagrams.

NOTE: MyKey(R) allows users to configure traction control to be either always on or selectable. If a MyKey(R) restricted key is in use with the AdvanceTrac(R) always on feature configured to "on", the traction control system cannot be disabled. An admin key must be used in order to enable and disable the traction control system.

Normal Operation

Traction control system status is shown by an indicator in the Instrument Panel Cluster (IPC). When the driver deactivates the traction control, the IPC (Instrument Panel Cluster) sends a message to the ABS module over the High Speed Controller Area Network (HS-CAN). The ABS module deactivates the traction control system and sends a message to the IPC (Instrument Panel Cluster) to illuminate the stability/traction control indicator (sliding car icon) OFF light. The traction control system remains deactivated until the driver changes the traction control state in the message center or until the ignition switch is cycled.

This pinpoint test is intended to diagnose the following:

- Communication concern

- IPC (Instrument Panel Cluster)

PINPOINT TEST O : TRACTION CONTROL SYSTEM CANNOT BE DISABLED

O1 CHECK FOR IPC (Instrument Panel Cluster) DTCs

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: Self-Test- IPC (Instrument Panel Cluster).

Is DTC U0121:00 retrieved from the IPC (Instrument Panel Cluster)?

Yes
REFER to Instrument Panel, Gauges and Warning Indicators.

No
GO to O2.

O2 CHECK THE MESSAGE CENTER TRACTION CNTRL SELECTION

- Using the message center button, navigate to the SETTINGS menu, then the DRIVER ASSIST menu and view the TRACTION CNTRL setting.

- Configure the traction control on and then off again.

Does the TRACTION CNTRL selection change when configured to on and off?

Yes
GO to O3.

No
REFER to Instrument Panel, Gauges and Warning Indicators to diagnose message center does not operate correctly.

O3 CHECK THE STABILITY/TRACTION CONTROL INDICATOR (SLIDING CAR ICON) OFF LIGHT

- Ignition ON.

- Using the message center button, navigate to the SETTINGS menu, then the DRIVER ASSIST menu and view the TRACTION CNTRL setting.

- Configure the traction control on and then off again.

Does the stability/traction control indicator (sliding car icon) OFF indicator illuminate when the traction control is turned off?

Yes
The system is operating correctly at this time. TEST the system for normal operation.

No
REFER to Instrument Panel, Gauges and Warning Indicators to diagnose the stability/traction control disabled indicator does not operate correctly.