• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
The power steering control module (PSCM) continuously monitors the voltage and current levels being commanded to the power steering motor. The PSCM compares the commanded and feedback current levels to detect malfunctions in the power steering motor.
• | Engine running. |
• | Power steering system voltage is 9-16 volts. |
• | Steering input is present. |
A short to ground, short to voltage, or an open/high resistance in the power steering motor, or the circuits to the motor.
• | The driver information center (DIC) displays the POWER STEERING warning message. |
• | No steering assist is provided. |
• | A current DTC will clear on the next malfunction-free ignition cycle. |
• | A history DTC will clear after 100 consecutive malfunction-free ignition cycles. |
Power Steering System Description and Operation
Control Module References for scan tool information
⇒ | If DTC is set, replace the steering column. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.