Test Description

WARNING: This page is about a different car, the 2007 Pontiac Montana SV6, 2007 Chevrolet Uplander, and 2007 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

3: This step tests the circuitry in the high voltage range.
4: This step tests the circuitry in the low voltage range.
5: This step tests the low reference circuit of the steering wheel position sensor.

DTC C0460 or C0461

Step	Action	Values	Yes	No
Schematic Reference: Antilock Brake System Schematics Connector End View Reference: Antilock Brake System Connector End Views
1	Did you perform the Diagnostic System Check - Vehicle?	-	Go to Step 2	Go to Diagnostic System Check - Vehicle
2	Use the scan tool to clear the DTC. Start the engine. With the engine running, turn the steering wheel back and forth from lock to lock. Does the DTC reset?	-	Go to Step 3	Go to Diagnostic Aids
3	Turn OFF the ignition. Disconnect the steering wheel position sensor harness connector. Turn ON the ignition. Select the vehicle stability enhancement system (VSES) Data List on the scan tool. Observe the Analog SWPS Signal parameter on the scan tool. Does the scan tool indicate that the Steering Wheel Position Sensor Data parameter is less than specified value?	0.2 V	Go to Step 4	Go to Step 9
4	Connect a 3-amp fused jumper wire between the steering wheel position 5-volt reference circuit and the analog steering signal circuit. Observe the Analog SWPS Signal parameter on the scan tool. Does the scan tool indicate that the steering wheel position sensor data parameter is greater than specified value?	4.8 V	Go to Step 5	Go to Step 6
5	Use a DMM to measure the voltage between the steering wheel position 5-volt reference circuit and the steering wheel position low reference circuit. Does the voltage measure greater than the specified value?	4.8 V	Go to Step 10	Go to Step 8
6	Test the 5-volt reference circuit of the steering wheel position sensor for an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	-	Go to Step 14	Go to Step 7
7	Test the signal circuit of the steering wheel position sensor for an open or a short to ground. Refer to Testing for Short to Ground and Wiring Repairs . Did you find and correct the condition?	-	Go to Step 14	Go to Step 11
8	Test the low reference circuit of the steering wheel position sensor for an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	-	Go to Step 14	Go to Step 11
9	Test the signal circuit of the steering wheel position sensor for a short to voltage. Refer to Testing for Short to Ground and Wiring Repairs . Did you find and correct the condition?	-	Go to Step 14	Go to Step 13
10	Inspect for poor connections at the harness connector of the steering wheel position sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition?	-	Go to Step 14	Go to Step 12
11	Inspect for poor connections at the harness connector of the electronic brake control module (EBCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition?	-	Go to Step 14	Go to Step 13
12	Replace the steering wheel position sensor. Refer to Steering Wheel Position Sensor or Steering Shaft Lower Bearing Replacement . Did you complete the replacement?	-	Go to Step 14	-
13	Replace the EBCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement?	-	Go to Step 14	-
14	Use the scan tool to clear all DTCs from all modules. Operate the vehicle within the conditions for running the DTC as specified in the supporting text. Does the DTC reset?	-	Go to Step 2	System OK