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

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

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

Normal Operation

The traction control indicator informs the driver that a traction control event is taking place, by flashing the indicator. It is also used to indicate a traction control system concern by illuminating the indicator constantly (not flashing). The Instrument Cluster (IC) receives the traction control signal from the ABS module through the communication network. When a traction control event is taking place, the ABS module sends a message to the IC over the communication network to flash the traction control indicator. When a traction control system concern exists, the ABS module sends a message to the IC to turn on the traction control indicator.

This pinpoint test is intended to diagnose the following:

- ABS module
- IC



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

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Z1 RETRIEVE THE RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND ABS MODULE SELF-TESTS


- Check for recorded ABS module DTCs from the continuous and on-demand self-tests.
- Are any DTCs recorded?

Yes
REFER to Antilock Brakes / Traction Control Systems. Testing and Inspection

No
GO to Z2.

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Z2 RETRIEVE THE RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND IC SELF-TESTS


- Check for recorded IC DTCs from the continuous and on-demand self-tests.
- Is DTC C1093 recorded?

Yes
REFER to Antilock Brakes / Traction Control Systems. Testing and Inspection

No
GO to Z3.

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Z3 CARRY OUT THE IC INDICATOR LAMP ACTIVE COMMAND USING THE SCAN TOOL


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IC DataLogger.
- Select the IC traction control indicator (STAB_IND) active command on and off while monitoring the traction control indicator.
- Does the traction control indicator illuminate when commanded on, and turn off when commanded off?

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

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

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