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

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test AB: 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 system. The IPC 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 missing for more than 5 seconds, the IPC sets DTC U0121:87 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

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

-------------------------------------------------
AB1 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 U0121:87, GO to Pinpoint Test AR. Pinpoint Test AR: DTC U0121:87

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

No
GO to AB2.

-------------------------------------------------
AB2 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 Vehicle Dynamic Systems Diagnostic Trouble Code Tests and Associated Procedures.

No
GO to AB3.

-------------------------------------------------
AB3 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 stability/traction control indicator (TC/IVD/RSC_LMP) 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
INSTALL a new ABS module. REFER to Vehicle Dynamic Systems Service and Repair. TEST the system for normal operation.

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

-------------------------------------------------