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

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

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

Normal Operation

The Instrument Panel Cluster (IPC) receives the traction control data from the ABS module over the High Speed Controller Area Network (HS-CAN) communication bus. The traction control indicator flashes when the vehicle traction control is in active mode or is being controlled by the ABS module. The traction control indicator turns on steady if a fault condition exists in the traction control system. The IPC monitors the traction control message from the ABS module and either flashes the 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 traction control indicator also illuminates and traction control is disabled.

If the traction control status message is missing for less than 5 seconds, the traction control indicator remains in the last indication mode (on or off) based upon the last known good message received. If the traction control message is missing for more than 5 seconds, the IPC sets DTC U0121:00 in continuous memory and defaults the traction control indicator on.

This pinpoint test is intended to diagnose the following:

- Traction control concern
- ABS module
- IPC



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

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V1 CARRY OUT THE IPC INDICATOR LAMP CONTROL ACTIVE COMMAND USING THE SCAN TOOL


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IPC DataLogger .
- Enter the IPC active command mode and select the traction control indicator (TC/IVD/RSCLMP) active command. Command the traction control indicator on and off while observing the traction control indicator.
- Does the traction control indicator illuminate when commanded on, and turn off when commanded off?

Yes
GO to V2.

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

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V2 RETRIEVE THE RECORDED DTCs FROM THE IPC SELF-TEST


- Check for recorded DTCs from the IPC self-test.
- Are any DTCs recorded?

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

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

No
GO to V3.

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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. REFER to Antilock Brakes / Traction Control Systems. TEST the system for normal operation.

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