Circuit Description
The power steering control module (PSCM) continuously monitors the voltage and current levels being commanded to the electric power steering (EPS) motor. The PSCM compares the desired and actual current levels to detect malfunctions in the EPS motor, or the circuits to the motor.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0475 Electric Steering Motor Circuit
Conditions for Running the DTC
| • | The ignition is ON. |
| • | No voltage DTCs are present. |
Conditions for Setting the DTC
A short to ground, short to voltage, or an open in the EPS motor, or the circuits to the motor.
Action Taken When the DTC Sets
| • | A DTC C0475 is stored in memory. |
| • | The IPC message center displays the PWR STR warning message. |
| • | No steering assist is provided. |
Conditions for Clearing the DTC
| • | A current DTC will clear on the next 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 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 | Inspect for poor connections at the electric power steering (EPS) motor harness connector, refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 6 | Go to Step 3 |
3 | Test the EPS motor control circuits for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 6 | Go to Step 4 |
4 | Test the EPS motor control circuits for a short to voltage. Refer to Testing for a Short to Voltage and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 6 | Go to Step 5 |
5 | Replace the EPS assembly. Refer to Steering Column Replacement in Steering Wheel and Column. Did you complete the repair? | Go to Step 6 | -- |
6 |
Does the DTC reset? | Go to Step 2 | System OK |
