Diagnostic Instructions

DTC Descriptors

DTC C0460 00: Steering Position Signal

DTC C0460 42: Steering Position Signal Initialization Not Accomplished

DTC C0460 4B: Steering Position Signal Calibration Not Accomplished

DTC C0460 5A: Steering Position Signal Not Plausible

DTC C0460 71: Steering Position Signal Internal Failure

DTC C0460 72: Steering Position Signal Rolling Count Invalid

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Steering Wheel Position Sensor 12-Volt Reference Voltage	C0292	C0292	C0292	--
Low Reference	C0460 00	C0460 00	--	--
Steering Wheel Position Signal Can HI	C0460 00	C0460 00	--	C0460 42, C0460 4B, C0460 5A, C0460 71, C0460 72
Steering Wheel Position Signal Can Lo	C0460 00	C0460 00	--	C0460 42, C0460 4B, C0460 5A, C0460 71, C0460 72

Circuit/System Description

The steering angle sensor shares a 12-volt ignition supply voltage with the electronic brake control module (EBCM) and the yaw-rate/lateral sensor. The EBCM applies a ground to the steering angle sensor low reference circuit, which is shared with the yaw-rate/lateral sensor.

The steering angle sensor provides a serial data signal output to the EBCM that represents the steering wheel degree of rotation. The EBCM utilizes this signal to calculate the driver intended driving direction.

Conditions for Running the DTC

Conditions for Setting the DTC

Action Taken When the DTC Sets

Conditions for Clearing the DTC

Diagnostic Aids

Reference Information

Schematic Reference

Antilock Brake System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

ABS Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Position the steering wheel to the straight-ahead, centered, position.
2. Install a scan tool, ignition ON, engine OFF, and view SWPS signal. One of the signals should be approximately 0-720 degrees.
3. As the steering wheel is turned, each signal should travel smoothly between 0 and 720 degrees.

Circuit/System Testing

1. Verify that DTC C0186 or C0196 is not set

⇒	If DTC C0186 or C0196 is set, refer to DTC C0186or DTC C0196

2. Ignition OFF, disconnect the harness connector at the EBCM.
3. Ignition ON, test for less than 1 volt between the circuit terminal of the appropriate circuit and ground.

•	Reference voltage circuit terminal 5

•	Reference ground circuit terminal 40

•	Serial Data circuit terminals 18 and 19

⇒	If greater than the specified range, test the appropriate circuit for a short to voltage.

4. Ignition OFF, test for infinite resistance between the ignition voltage terminal of the appropriate sensor listed below and ground.

•	Reference voltage circuit terminal 5

•	Reference ground circuit terminal 40

•	Serial Data circuit terminals 18 and 19

⇒	If less than the specified value, test the appropriate circuit for a short to ground.

5. Ignition OFF, disconnect the harness connector at the Steering Angle Sensor.
6. Ignition OFF, test for less than 2 ohms between the appropriate circuit terminals listed below.

•	Reference voltage circuit terminal 5 at the EBCM harness connector and terminal 1 at the Steering Angle Sensor harness connector.

•	Reference ground circuit terminal 40 at the EBCM harness connector and terminal 6 at the Steering Angle Sensor harness connector.

•	Communication circuit terminal 18 at the EBCM harness connector and terminal 3 at the Steering Angle Sensor harness connector.

•	Communication circuit terminal 19 at the EBCM harness connector and terminal 4 at the Steering Angle Sensor harness connector.

⇒	If greater than the specified value, test the ignition voltage circuit for an open or high resistance.

7. If all circuits test normal, replace the Steering Angle Sensor. If the DTC resets replace the EBCM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.