Circuit Description
The power steering control module (PSCM) receives a vehicle speed message from the powertrain control module (PCM) via the serial data circuit. The PSCM uses this vehicle speed message, and other inputs, to determine the desired amount of steering assist.
Conditions for Running the DTC
| • | The ignition is ON. |
| • | DTC U1300 or U1301 are not set. |
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 IPC displays the SERVICE VEHICLE SOON warning indicator. |
| • | Steering assist is set to a default level. |
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. |
| • | Using a scan tool. |
Test Description
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Power Steering Schematics Connector End View Reference: Power Steering Connector End Views | |||
1 | Did you perform the Power Steering System Diagnostic System Check? | Go to Step 2 | |
Does the scan tool indicate the presents of any vehicle related DTCs? | Go to Diagnostic System Check - Automatic Transmission in Automatic Transmission - 5AT, or to Diagnostic System Check - Automatic Transmission in Automatic Transmission VT25-E, or to Diagnostic System Check - Manual Transmission in Manual Transmission - Getrage 5 Speed | Go to Step 3 | |
3 |
Does the DTC reset? | Go to Step 2 | System OK |
