Pinpoint Test BG: The ControlTrac 4WD (Four-Wheel Drive) Gauge Is Inoperative

Instrumentation, Message Center and Warning Chimes

Pinpoint Test BG: The ControlTrac 4WD (Four-Wheel Drive) Gauge Is Inoperative

Normal Operation

The ControlTrac 4WD (Four-Wheel Drive) gauge indicates the level of power applied to each wheel in a continuous display over the vehicle. The Instrument Panel Cluster (IPC) uses multiple inputs to determine the ControlTrac 4WD (Four-Wheel Drive) gauge display. The first is an engine torque message sent to the IPC (Instrument Panel Cluster) from the PCM over the High Speed Controller Area Network (HS-CAN). The second is an AWD (All-Wheel Drive) torque message sent from the Transfer Case Control Module (TCCM) to the IPC (Instrument Panel Cluster) over the HS-CAN (High Speed Controller Area Network). The third is wheel speed data sent from the PCM to the IPC (Instrument Panel Cluster) over the HS-CAN (High Speed Controller Area Network).

As power is applied to the wheels, the display area around the wheels begin to light up and fill in. The lowest power is displayed closest to the wheel. As the amount of power increases, the display begins to fill rearward and/or forward of the vehicle.

If the engine torque data, wheel speed data or AWD (All-Wheel Drive) torque message is missing for 5 seconds or less or if the IPC (Instrument Panel Cluster) receives invalid engine torque data, wheel speed data or AWD (All-Wheel Drive) torque for 5 seconds or less, the IPC (Instrument Panel Cluster) defaults the display area fill around the wheels off.

If the IPC (Instrument Panel Cluster) does not receive the engine torque data or wheel speed data from the PCM for more than 5 seconds, the IPC (Instrument Panel Cluster) sets DTC U0100:00 in continuous memory and defaults the display area fill around the wheels off.

If the IPC (Instrument Panel Cluster) does not receive the AWD (All-Wheel Drive) torque message from the TCCM (Transfer Case Control Module) for 5 seconds, the IPC (Instrument Panel Cluster) sets DTC U0401:00 in continuous memory and defaults the display area fill around the wheels off.

NOTE: If DTC U0100:00 sets in the IPC (Instrument Panel Cluster), other observable symptoms may be an inoperative tachometer, temperature gauge or odometer.

This pinpoint test is intended to diagnose the following:

- 4WD (Four-Wheel Drive) concern

- IPC (Instrument Panel Cluster)

PINPOINT TEST BG : THE CONTROLTRAC 4WD (Four-Wheel Drive) GAUGE IS INOPERATIVE

BG1 RETRIEVE THE RECORDED DTCs FROM THE IPC (Instrument Panel Cluster) SELF-TEST

- Check for recorded IPC (Instrument Panel Cluster) DTCs from the self-test.

Are any DTCs recorded?

Yes
REFER to DTC Charts. Instrumentation, Message Center and Warning Chimes
No
GO to BG2.

BG2 RETRIEVE THE RECORDED DTCs FROM THE PCM KOEO (Key ON Engine OFF) SELF-TEST

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

Are any DTCs recorded?

Yes
For all 4WD (Four-Wheel Drive) related DTCs, REFER to Transfer Case.

For all other DTCs, REFER to Computers and Control Systems. TEST the system for normal operation.
No
GO to BG3.

BG3 RETRIEVE THE RECORDED DTCs FROM THE TCCM (Transfer Case Control Module) SELF-TEST

- Check for recorded PCM DTCs from the TCCM (Transfer Case Control Module) self-test.

Are any DTCs recorded?

Yes
REFER to Transfer Case.
No
GO to BG4.

BG4 CHECK THE DISPLAY MODE MENU SETTING

- In the gauge display mode, check the ControlTrac 4WD (Four-Wheel Drive) gauge.

Does the ControlTrac 4WD (Four-Wheel Drive) gauge display?

Yes
The ControlTrac 4WD (Four-Wheel Drive) gauge is operating correctly at this time. The display mode was not set to correct display mode.
No
INSTALL a new IPC (Instrument Panel Cluster). REFER to Instrument Panel Cluster (IPC) . TEST the system for normal operation.