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Test Description

WARNING: This page is about a different car, the 2004 Cadillac CTS. 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.

  1. 2:  Perform the Steering Position Sensor Test in order to verify if the steering wheel position sensor (SWPS) is operating properly.
  2. 3:  Tests for the proper operation of the steering wheel position signal A circuit in the low voltage range.
  3. 4:  Tests for the proper operation of the steering wheel position signal B circuit in the low voltage range.
  4. 5:  Tests for the proper operation of the steering wheel position signal A circuit in the high voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to ground.
  5. 6:  Tests for the proper operation of the steering wheel position signal B circuit in the high voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to ground.
  6. 7:  Tests for a short to voltage in the 5-volt reference circuit.
  7. 8:  Tests for a high resistance or an open in the low reference circuit.
DTC C0460 or C0461

Step Action Values Yes No
Schematic Reference: ABS Schematics 
Connector End View Reference: ABS Connector End Views 
1 Did you perform the Diagnostic System Check-ABS? - Go to Step 2  Go to Diagnostic System Check - ABS 
2 
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With the scan tool, perform the Steering Position Sensor Test.
Did the SWPS pass the test?		 - Go to Diagnostic Aids Go to Step 3 
3 
  1. Turn OFF the ignition.
  2. Disconnect the steering wheel position sensor (SWPS) connector.
  3. Turn ON the ignition, with the engine OFF.
  4. With the scan tool, observe the Dual Analog SWPS Input A parameter in the VSES data list.
Does the scan tool indicate the Dual Analog SWPS Input A parameter is less than the specified value?		 0.2 V Go to Step 4  Go to Step 13 
4  With the scan tool, observe the Dual Analog SWPS Input B parameter.
Does the scan tool indicate the Dual Analog SWPS Input B parameter is less than the specified value?		 0.2 V Go to Step 5  Go to Step 14 
5 
  1. Turn OFF the ignition.
  2. Connect a 3-amp fused jumper wire between the 5-volt reference circuit of the steering wheel position sensor (SWPS) and the signal A circuit of the steering wheel position sensor (SWPS).
  3. Turn ON the ignition, with the engine OFF.
  4. With the scan tool, observe the Dual Analog SWPS Input A parameter.
Does the scan tool indicate that the Dual Analog SWPS Input A parameter is greater than the specified value?		 4.9 V Go to Step 6  Go to Step 10 
6 
  1. Turn OFF the ignition.
  2. Disconnect the fused jumper wire.
  3. Connect a 3-amp fused jumper wire between the 5-volt reference circuit of the steering wheel position sensor (SWPS) and the signal B circuit of the steering wheel position sensor (SWPS).
  4. Turn ON the ignition, with the engine OFF.
  5. With the scan tool, observe the Dual Analog SWPS Input B parameter.
Does the scan tool indicate that the Dual Analog SWPS Input B parameter is greater than the specified value?		 4.9 V Go to Step 7  Go to Step 10 
7 
  1. Disconnect the fused jumper wire.
  2. Measure the voltage between the 5-volt reference circuit of the steering wheel position sensor (SWPS) and the low reference circuit of the steering wheel position sensor (SWPS).
Does the voltage measure less the specified value?		 5 V Go to Step 8  Go to Step 9 
8 
  1. Turn OFF the ignition.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  3. Measure the resistance from the low reference circuit of the steering wheel position sensor (SWPS) to a good ground.
Does the resistance measure less than the specified value?		 5 Ω Go to Step 16  Go to Step 15 
9 Test the 5-volt reference circuit of the steering wheel position sensor (SWPS) for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 20  Go to Step 17 
10 Test the 5-volt reference circuit of the steering wheel position sensor (SWPS) for the following conditions:
  • An open
  • A short to ground
  • A high resistance

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 20  Go to Step 11 
11 Test the signal A circuit of the steering wheel position sensor (SWPS) for the following conditions:
  • An open
  • A short to ground
  • A high resistance

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 20  Go to Step 12 
12 Test the signal B circuit of the steering wheel position sensor (SWPS) for the following conditions:
  • An open
  • A short to ground
  • A high resistance

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 20  Go to Step 17 
13 Test the signal A circuit of the steering wheel position sensor (SWPS) for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 20  Go to Step 17 
14 Test the signal B circuit of the steering wheel position sensor (SWPS) for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 20  Go to Step 17 
15
  1. Disconnect the EBCM harness connector.
  2. Install the J 39700  universal pinout box using the J 39700-300  cable adapter to the EBCM harness connector only. See Special Tools and Equipment .
  3. Test the low reference circuit of the steering wheel position sensor (SWPS) for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 20  Go to Step 17 
16 Inspect for poor connections at the harness connector of the steering wheel position sensor (SWPS). 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 20  Go to Step 18 
17 Inspect for poor connections at the harness connector of the EBCM. 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 20  Go to Step 19 
18 Replace the steering wheel position sensor (SWPS). Refer to Steering Wheel Position Sensor or Steering Shaft Lower Bearing Replacement in Steering Wheel and Column.
Did you complete the repair?		 - Go to Step 20  -
19 Replace the EBCM. Refer to Electronic Brake Control Module Replacement (CTS)  or Electronic Brake Control Module Replacement (CTS-V) .
Did you complete the repair?		 - Go to Step 20  -
20
  1. Clear the DTCs using the scan tool.
  2. 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
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