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

Instrumentation, Message Center and Warning Chimes

Pinpoint Test V: 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 stability/traction control is in active mode or is being controlled by the ABS module. The stability/traction control indicator turns on steady if a fault condition exists in the stability/traction control system. 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.

Whenever a fault is detected in the ABS module and the ABS warning indicator is illuminated, the stability/traction control indicator also illuminates and stability/traction control is disabled.

If the stability/traction control status message is missing for less than 5 seconds, the stability/traction control indicator remains in the last indication mode (on or off) based upon the last known good message received. 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 V : THE STABILITY/TRACTION CONTROL INDICATOR IS NEVER/ALWAYS ON

V1 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.

- Enter the IPC (Instrument Panel Cluster) active command mode and select the stability/traction control indicator (TC/IVD/RSCLMP) active command. Command the stability/traction control 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 V2.

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

V2 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 BK. Pinpoint Test BK: DTC U0121:00

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

No
GO to V3.

V3 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
INSTALL a new ABS module. TEST the system for normal operation.