C0532

DTC C0532

CIRCUIT DESCRIPTION
The rear wheel steering module monitors the input signal of the rear wheel position sensor and the hall sensor circuits. The rear wheel steering module tracks the signals sent by the rear wheel position sensor and the hall sensor circuits, phase A, phase B, and phase C. If any one of the hall sensor circuits are open, shorted to voltage or shorted to ground while the rear steering motor is tracking the rear wheel position sensor, an invalid motor position will occur, thus setting the DTC.

If the rear wheel position sensor signals have invalid values the rear wheel steering control module will not be able to track the position of the rear wheel position sensor, causing an invalid motor position, thus setting the DTC.

CONDITIONS FOR RUNNING THE DTC
The fault is detected when the ignition is ON and the engine is ON.

CONDITIONS FOR SETTING THE DTC
Comparison of the rear position sensor and the rear wheel position differ by more than 1.4°.

ACTION TAKEN WHEN THE DTC SETS
- The Service 4 Wheel Steer indicator in IPC will be displayed.
- The code is displayed on the scan tool as DTC C0532.
- The output command to the motor is zeroed. The motor drive circuits are disabled using commands to open the power relay, and to close the motor shorting relay.
- The rear wheels are returned to the centered position.

CONDITIONS FOR CLEARING THE DTC
- The conditions for setting the DTC are not currently present.
- The rear wheel steering control module receives a clear code command from the scan tool.
- The DTC clears after 100 malfunction free ignition cycles.

DIAGNOSTIC AIDS
- Inspect for poor connections at the harness connector of the rear wheel steering control module, rear wheel position sensor and the rear wheel steering motor connectors. Refer to Diagnostic Aids For Circuit Testing And Wiring Repair procedures.
- Inspect the rear wheel position sensor for damage. If none is found then remove and inspect the sensor and coupler for damage or water intrusion. Refer to Rear Position Sensor Replacement. If water damage is found, refer to Rack and Pinion Boot Replacement.
- Observe the rear wheel steering mode select switch. If all of the mode indicator LEDs are illuminated the rear wheel steering control module has lost its memory settings and the scan tool must be used to re-calibrate the rear wheel steering alignment data in the rear wheel steering control module. Refer to Measuring Wheel Alignment (With Rear Wheel Steering) Measuring Wheel Alignment (Without Rear Wheel Steering)

TEST DESCRIPTION

Steps 1-5:

Steps 6-8:

The numbers below refer to the step numbers on the diagnostic table.
2. This step tests for the proper operation of the rear steering position sensor.
3. This step tests for the proper operation of the rear steering motor position sensor.
4. This step performs the diagnostic procedure for the rear steering position sensor.
5. This step performs the diagnostic procedure for the rear steering motor position sensor.