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

Instrumentation, Message Center and Warning Chimes

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

Normal Operation

On vehicles with stability control, the Instrument Panel Cluster (IPC) receives the stability/traction control indicator request from the ABS module over the High Speed Controller Area Network (HS-CAN) communication bus. On vehicles with Engine Only Traction Control (EOTC), the IPC (Instrument Panel Cluster) receives the traction control indicator request from the PCM over the HS-CAN (High Speed Controller Area Network) communication bus. The stability/traction control indicator flashes rapidly when the vehicle stability/traction control is in active mode or is being controlled by the ABS module or PCM. The stability/traction control indicator flashes slowly generally when a configuration conflict or concern is present in the ABS or PCM. 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 or PCM and either flashes the stability/traction control indicator or turns it on steady depending on the condition. The stability/traction control indicator is also used to indicate a trailer sway condition (if equipped).

If the stability/traction control indicator status message is missing for less than 5 seconds, the IPC (Instrument Panel Cluster) defaults the stability/traction control indicator to its last state (on or off) based upon the last known good message received. If the stability/traction control indicator status message is missing for more than 5 seconds, the IPC (Instrument Panel Cluster) sets DTC U0100:00 (engine only traction control) or DTC U0121:00 (stability control) 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 (with stability control)

- PCM (with EOTC (Engine Only Traction Control) )

- IPC (Instrument Panel Cluster)

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

R1 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.

- Select the IPC (Instrument Panel Cluster) stability/traction control indicator (TC/IVD/RSCLMP) active command. Command the stability/traction control active 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 R2.

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

R2 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 BD. Pinpoint Test BD: DTC U0121:00

For all other DTCs, REFER to DTC Charts. Instrumentation, Message Center and Warning Chimes
No
For stability control, GO to R3.

For EOTC (Engine Only Traction Control), GO to R4.

R3 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
If the stability/traction control indicator is never on, the system is operating correctly at this time.

If the stability/traction control indicator is always on, INSTALL a new ABS module. TEST the system for normal operation.

R4 RETRIEVE THE RECORDED DTCs FROM PCM KOEO (Key ON Engine OFF) SELF-TEST

- Check the recorded PCM DTCs from the Key ON Engine OFF (KOEO) self-test.

Are any DTCs recorded?

Yes
REFER to Computers and Control Systems Information. TEST the system for normal operation.

No
If the stability/traction control indicator is never on, the system is operating correctly at this time.
If the stability/traction control indicator is always on, INSTALL a new PCM. TEST the system for normal operation.