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

Instrumentation and Warning Chimes

Pinpoint Tests

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

Normal Operation

The Instrument Cluster (IC) 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 the traction control system has been disabled and a fault condition exists in the system. The IC 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.

If the traction control 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 data message. If the traction control message is missing for more than 5 seconds, the IC sets DTC U0121 in continuous memory and defaults the traction control indicator on.

This pinpoint test is intended to diagnose the following:

- Traction control concern
- ABS module
- IC



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

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P1 CARRY OUT THE IC INDICATOR LAMP CONTROL ACTIVE COMMAND USING THE SCAN TOOL


- Enter the following diagnostic mode on the scan tool: IC DataLogger.
- Enter the IC active command mode and select the traction control indicator (STAB_IND) active command. Command the traction control active indicator on and off. Observe the traction control indicator.
- Does the traction control indicator illuminate when commanded on, and turn off when commanded off?

Yes
GO to P2.

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

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P2 RETRIEVE THE RECORDED DTCs FROM THE IC SELF-TEST


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

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

For all other DTCs, REFER to DTC Charts. Diagnostic Trouble Code Tests and Associated Procedures

No
GO to P3.

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P3 RETRIEVE THE RECORDED DTCs FROM THE ABS MODULE SELF-TEST


- Check for recorded ABS module DTCs from the 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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