Pinpoint Test O: The Stability/Traction Control Indicator Is Never/Always On

Instrumentation, Message Center and Warning Chimes

Pinpoint Test O: The Stability/Traction Control Indicator Is Never/Always On

Normal Operation

The Instrument Panel Cluster (IPC) receives the stability/traction control data from the ABS module over the High Speed Controller Area Network (HS-CAN) communication bus. The stability/traction control indicator flashes when the vehicle traction control is in active mode or is being controlled by the ABS module. The IPC (Instrument Panel Cluster) monitors the stability/traction control message from the ABS module and either flashes the stability/traction control indicator or turns it on steady depending on the condition.

If the stability/traction control message is invalid for 5 seconds or less or if the IPC (Instrument Panel Cluster) does not receive the stability/traction control message for 5 seconds or less, the IPC (Instrument Panel Cluster) defaults the stability/traction control indicator to the last indication mode (on/off) based upon the last known good message. If the stability/traction control message is missing for more than 5 seconds, the IPC (Instrument Panel Cluster) sets DTC U0121:00 in continuous memory and defaults the stability/traction control indicator on.

This pinpoint test is intended to diagnose the following:

- Stability/traction control concern

- ABS module

- IPC (Instrument Panel Cluster)

PINPOINT TEST O : THE STABILITY/TRACTION CONTROL INDICATOR IS NEVER/ALWAYS ON

O1 CARRY OUT THE IPC (Instrument Panel Cluster) INDICATOR LAMP CONTROL ACTIVE COMMAND USING THE SCAN TOOL

- Ignition ON.

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

- Select the IPC (Instrument Panel Cluster) stability/traction control indicator (TC/IVD/RSCLMP) active command. Command the stability/traction control active indicator on and off while observing the stability/traction control indicator.

Does the stability/traction control indicator illuminate when commanded on and turn off when commanded off?

Yes
GO to O2.

No
INSTALL a new IPC (Instrument Panel Cluster). REFER to Instrument Panel Cluster (IPC) Service and Repair. TEST the system for normal operation.

O2 RETRIEVE THE RECORDED DTCs FROM THE IPC (Instrument Panel Cluster) SELF-TEST

- Check for recorded DTCs from the IPC (Instrument Panel Cluster) self-test.

Are any DTCs recorded?

Yes
For DTC U0121:00, GO to Pinpoint Test AO Pinpoint Test AO: DTC U0121:00.

For all other DTCs, REFER to DTC Charts Instrumentation, Message Center and Warning Chimes.

No
GO to O3.

O3 RETRIEVE THE RECORDED DTCs FROM THE ABS MODULE SELF-TEST

- Check for recorded DTCs from the ABS module self-test.

Are any DTCs recorded?

Yes
REFER to Antilock Brakes / Traction Control Systems.

No
If the stability/traction control indicator is never on, the system is operating correctly at this time.

If the stability/traction control indicator is always on, INSTALL a new ABS module. TEST the system for normal operation.