Diagnostic Aids

For DTC U3000:41, the PSCM will remove steering assist, enter into a manual mode and transmit an invalid steering angle message over the HS-CAN bus. The module will also send a message to the instrument cluster to display the POWER STEERING ASSIST FAULT message in the message center.

For DTC U3000:46, initially the PSCM will use a default steering assist and may set DTC U2100:00. If DTC U3000:46 returns on the next ignition cycle, then the PSCM will remove steering assist, enter into a manual mode and send a message to the instrument cluster to display the POWER STEERING ASSIST FAULT message in the message center.

For DTC U3000:49, the presence of this DTC may or may not affect steering assist. It will depend on what other DTCs (if any) are set along with U3000:49. Diagnose all other DTCs before diagnosing U3000:49.

For DTC U3000:61, the PSCM will remove steering assist, enter into a manual mode and transmit an invalid steering angle message over the HS-CAN bus. The PSCM will also send a message to the instrument cluster to display the POWER STEERING ASSIST FAULT message in the message center.

For DTC U3000:72, this DTC indicates that a specific internal relay is either stuck open or has excessive resistance. In cold climates or climates where frost is possible, the relay contacts could develop a layer of frost which may prevent a clean connection between the relay contacts. It may be necessary to allow the vehicle to remain outside overnight in a cold climate to duplicate the DTC trigger conditions. If U3000:72 sets again on subsequent ignition cycles, then the PSCM will remove steering assist, enter into a manual mode and send a message to the instrument cluster to display the POWER STEERING ASSIST FAULT message in the message center.

• For DTC U3000:96, the instrument cluster will display the POWER STEERING ASSIST FAULT in the message center when this DTC is set. DTC U3000:96 cannot be cleared using the scan tool, to clear this DTC follow the pinpoint test instructions.