C0000
DTC C0000
Circuit Description
The power steering control module (PSCM) receives a class 2 vehicle speed message from the engine control module (ECM) via the class 2 serial data circuit. The PSCM uses this vehicle speed message and other inputs to determine the desired amount of steering assist.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0000 Vehicle Speed Information Circuit
Conditions for Running the DTC
* The ignition is ON.
* DTC U1300, U1301, or U2100 are not set.
* Vehicle speed is greater than 8.1 km/h (5 mph).
Conditions for Setting the DTC
The PSCM receives an invalid or no vehicle speed message from the ECM.
Action Taken When the DTC Sets
* DTC C0000 is stored in memory.
* The instrument panel cluster (IPC) message center displays the PWR STR warning message.
* Steering assist level defaults to 120 km/h (74.5 mph) vehicle speed level of assist.
Conditions for Clearing the DTC
* A current DTC will clear on the next consecutive malfunction-free ignition cycle.
* A history DTC will clear after 100 consecutive malfunction-free ignition cycles.
Test Description
2. This step tests for the presence of vehicle speed related DTCs in the control modules where the vehicle speed message originates.
