Diagnostic Aids

For DTC U3000:41, the PSCM disables steering assist, enters manual mode and transmits an invalid steering angle message over the HS-CAN. The module also sends a message to the instrument cluster to display POWER STEERING ASSIST FAULT in the message center. For DTC U3000:46, initially the PSCM uses a default steering assist and may set DTC U2100:00. If DTC U3000:46 returns on the next ignition cycle, the PSCM disables steering assist, enters manual mode and sends a message to the instrument cluster to display POWER STEERING ASSIST FAULT in the message center. For DTC U3000:49, the presence of this DTC may or may not affect steering assist. It depends 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 disables steering assist, enters manual mode and transmits an invalid steering angle message over the HS-CAN. The PSCM also sends a message to the instrument cluster to display POWER STEERING ASSIST FAULT in the message center. For DTC U3000:72, this DTC indicates 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, the PSCM disables steering assist, enters manual mode and sends a message to the instrument cluster to display POWER STEERING ASSIST FAULT in the message center.

For DTC U3000:96, the IPC displays POWER STEERING ASSIST FAULT in the message center when this DTC is set. DTC U3000:96 cannot be cleared using a diagnostic scan tool, to clear this DTC follow the pinpoint test instructions.

The presence of any one of these DTCs prevents the active park assist system (if equipped) and lane keep assist system (if equipped) from activating. If set during an active park or lane keep assist event, the event is terminated and the assist system is deactivated.