C1036

C1036 - REAR WHEEL SPEED SENSOR CIRCUIT






For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on.

- Set Condition:
When the Rear Wheel Speed Sensor circuit fails the diagnostic test.






DIAGNOSTIC TEST

1. CHECK FOR DTC C1036 - REAR WHEEL SPEED SENSOR CIRCUIT






Note: This DTC must be active for the results of this test to be valid.

1. Turn the ignition on.
2. With the scan tool, record and erase DTC's.
3. Cycle the ignition switch from off to on.
4. With the scan tool, read DTC's.

Does the scan tool display: C1036- REAR WHEEL SPEED SENSOR CIRCUIT?

Yes
- Go To 2.

No
- Refer to the Intermittent Condition Diagnostic Procedure.
- Perform ABS Verification Test-VER 1. Refer to ABS Verification Test


2. CHECK CONNECTOR/TERMINAL FOR DAMAGE






Note: Check all terminals for broken, bent, pushed out, or corroded terminals.

1. Turn the ignition off.
2. Inspect the Anti-Lock Brake Module harness connector, Rear WSS, and Rear WSS harness connector.

Is the Rear WSS or any of the connectors/terminals damaged?

Yes
- Repair as necessary.
- Perform ABS Verification Test-VER 1. Refer to ABS Verification Test

No
- Go To 3.

3. CHECK (B222) REAR WSS SUPPLY CIRCUIT VOLTAGE






1. Turn the ignition off.
2. Disconnect the Rear WSS harness connector.
3. Turn the ignition on.
4. Measure the voltage between the (B222) Rear WSS Supply circuit and ground.

Is the voltage above 10 volts?

Yes
- Go to 6.

No
- Go To 4.

4. CHECK (B222) REAR WSS SUPPLY CIRCUIT SHORT TO GROUND






1. Turn the ignition off.
2. Disconnect the Anti-Lock Brake Module harness connector.
3. Disconnect the Rear WSS harness connector.
4. Using a 12-volt test light connected to 12-volts, probe the (B222) Rear WSS Supply circuit.

Does the test light illuminate brightly?

Yes
- Repair the (B222) Rear WSS Supply circuit for a short to ground.
- Perform ABS Verification Test-VER 1. Refer to ABS Verification Test

No
- Go To 5.


5. CHECK (B222) REAR WSS SUPPLY CIRCUIT OPEN






1. Turn the ignition off.
2. Disconnect the Anti-Lock Brake Module harness connector.
3. Disconnect the Rear WSS harness connector.
4. Connect a jumper wire between the (B222) Rear WSS Supply circuit and ground.
5. Using a 12-volt test light connected to 12-volts, probe the (B222) Rear WSS Supply circuit.

Does the test light illuminate brightly?

Yes
- Go to 6.

No
- Repair the (B222) Rear WSS Supply circuit for an open.
- Perform ABS Verification Test-VER 1. Refer to ABS Verification Test


6. CHECK (B22) REAR WSS SIGNAL CIRCUIT SHORT TO VOLTAGE






1. Turn the ignition off.
2. Disconnect the Rear WSS harness connector.
3. Turn the ignition on.
4. Measure the voltage between the (B22) Rear WSS Signal circuit and ground.

Is the voltage above one volt?

Yes
- Repair the (B22) Rear WSS Signal circuit for a short to voltage.
- Perform ABS Verification Test-VER 1. Refer to ABS Verification Test

No
- Go To 7.

7. CHECK (B22) REAR WSS SIGNAL CIRCUIT SHORT TO GROUND






1. Turn the ignition off.
2. Disconnect the Anti-Lock Brake Module harness connector.
3. Disconnect the Rear WSS harness connector.
4. Using a 12-volt test light connected to 12-volts, probe the (B22) Rear WSS Signal circuit.

Does the test light illuminate brightly?

Yes
- Repair the (B22) Rear WSS Signal circuit for a short to ground.
- Perform ABS Verification Test-VER 1. Refer to ABS Verification Test

No
- Go To 8.

8. CHECK (B22) REAR WSS SIGNAL CIRCUIT OPEN






1. Turn the ignition off.
2. Disconnect the Anti-Lock Brake Module harness connector.
3. Disconnect the Rear WSS harness connector.
4. Connect a jumper wire between the (B22) Rear WSS Signal circuit and ground.
5. Using a 12-volt test light connected to 12-volts, probe the (B22) Rear WSS Signal circuit.

Does the test light illuminate brightly?

Yes
- Go To 9.

No
- Repair the (B22) Rear WSS Signal circuit for an open.
- Perform ABS Verification Test-VER 1. Refer to ABS Verification Test

9. CHECK (B22) REAR WSS SIGNAL CIRCUIT AND (B222) REAR WSS SUPPLY CIRCUIT SHORT TOGETHER






1. Turn the ignition off.
2. Disconnect the Anti-Lock Brake Module harness connector.
3. Disconnect the Rear WSS harness connector.
4. Measure the resistance between the (B22) Rear WSS Signal circuit and the (B222) Rear WSS Supply circuit.

Is the resistance above 5.0 ohms?

Yes
- Go To 10.

No
- Repair the (B22) Rear WSS Signal circuit and the (B222) Rear WSS Supply circuit for a short together.
- Perform ABS Verification Test-VER 1. Refer to ABS Verification Test


10. CHECK REAR WSS






1. Turn the ignition off.
2. Reconnect all connectors.
3. Disconnect the Rear WSS harness connector.
4. Turn the ignition on.
5. Measure the voltage of the (B222) Rear WSS Supply circuit while reconnecting the Rear WSS harness connector.

Did the (B222) Rear WSS Supply circuit drop voltage to 0 volts?

Yes
- Replace the Rear WSS.
- Perform ABS Verification Test-VER 1. Refer to ABS Verification Test

No
- Go To 11.

11. CHECK REAR WSS OUTPUT






1. Turn the ignition off.
2. Reconnect all connectors.
3. Turn the ignition on.
4. Measure the amperage of the (B22) Rear WSS Signal circuit in the Rear WSS harness connector.
5. Slowly rotate the Rear wheel.

Does the amperage toggle between 7 mA to 14 mA?

Yes
- Go To 12.

No
- Replace the Rear WSS.
- Perform ABS Verification Test-VER 1. Refer to ABS Verification Test


12. ANTI-LOCK BRAKE MODULE INTERNAL FAULT - (B222) REAR WSS SUPPLY CIRCUIT






1. Turn the ignition off.
2. Remove the Anti-Lock Brake Module harness connector strain relief to access wires.
3. Reconnect the Anti-Lock Brake Module harness connector.
4. Turn the ignition on.
5. Measure the voltage between the (B222) Rear WSS Supply circuit and ground.

Is the voltage above 10 volts?

Yes
- Go To 13.

No
- Replace the Anti-Lock Brake Module.
- Perform ABS Verification Test-VER 1. Refer to ABS Verification Test


13. ANTI-LOCK BRAKE MODULE INTERNAL FAULT - (B22) REAR WSS SIGNAL CIRCUIT






1. Turn the ignition off.
2. Remove the Anti-Lock Brake Module harness connector strain relief to access wires.
3. Reconnect the Anti-Lock Brake Module harness connector.
4. Turn the ignition on.
5. Measure the voltage between the (B222) Rear WSS Supply circuit and the (B22) Rear WSS Signal circuit.

Is the voltage above 10 volts?

Yes
- Refer to Intermittent Condition Diagnostic Procedure.
- Perform ABS Verification Test-VER 1. Refer to ABS Verification Test

No
- Replace the Anti-Lock Brake Module.
- Perform ABS Verification Test-VER 1. Refer to ABS Verification Test