Circuit Description
The power steering control module (PSCM) receives a class 2 power moding message from the body control module (BCM) to determine the position of the ignition switch. After a power mode OFF message is received, the PSCM monitors the ignition 1 voltage circuit to detect if a short to voltage fault exists.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0848 Device Ignition 1 Circuit High
Conditions for Running the DTC
| • | The ignition is OFF. |
| • | The class 2 power mode message indicates OFF. |
Conditions for Setting the DTC
| • | The PSCM ignition 1 voltage circuit is shorted to voltage. |
| • | DTCs U1300 and U1301 are not set. |
Action Taken When the DTC Sets
| • | DTC C0848 is stored in memory. |
| • | The instrument panel cluster (IPC) displays the SERVICE VEHICLE SOON warning indicator. |
Conditions for Clearing the MIL/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 |
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Power Steering Schematics Connector End Views Reference: Power Steering Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 | Test the ignition 1 voltage circuit for a short to voltage. Refer to Testing for a Short to Voltage and Wiring Repairs . Did you find and correct the condition? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections |
3 |
Does the DTC reset? | Go to Step 2 | System OK |
