C1036

C1036-REAR WHEEL SPEED SENSOR CIRCUIT





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

NOTE: The Electronic Stability Control (ESC) may also be referred to as Electronic Stability Program (ESP) depending on the vehicle model year and configuration. Certain components may also reference ESP, ESC, or use the traction control symbol.

- When Monitored:
With the ignition on and no system under voltage or over voltage condition present.

- Set Condition:
If the measured wheel speed sensor feedback voltage is less than.304 of a volt, the sensor is considered open.

If the measured wheel speed sensor feedback voltage is greater than 1.39 volts, or if a sensor over current condition is detected, the sensor is considered shorted.

If a shorted or open condition is present for more than 100 msec, the DTC will set.





1. DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, clear DTCs.
3. Turn the ignition off.
4. Turn the ignition on.
5. With the scan tool, select View DTCs.

Is the status Active for this DTC?

Yes

- Go To 2

No

- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Perform the ABS-INTERMITTENT CONDITION TEST. ABS Intermittent Condition Test.

2. WHEEL SPEED SENSOR INSPECTION
1. Turn the ignition off.
2. Inspect the Wheel Speed Sensor for proper mounting.
3. Inspect the Wheel Speed Sensor harness and connector.

Were any problems found?

Yes

- Repair as necessary.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

No

- Go To 3

3. CHECK (B222) REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT VOLTAGE




1. Disconnect the Rear Wheel Speed Sensor harness connector.
2. Turn the ignition on.
3. Measure the voltage between the (B222) Rear Wheel Speed Sensor Supply circuit and ground.

Is the voltage above 10 volts?

Yes

- Go To 4

No

- Go To 6

4. (B222) REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT SHORTED TO VOLTAGE




1. Turn the ignition off.
2. Disconnect the ABS Module harness connector.
3. Turn the ignition on.
4. Measure the voltage of the (B222) Rear Wheel Speed Sensor Supply circuit.

Is there any voltage present?

Yes

- Repair the (B222) Rear Wheel Speed Sensor Supply circuit for a short to voltage.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

No

- Go To 5

5. (B22) REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT SHORTED TO GROUND




1. Turn the ignition off.
2. Measure the resistance between the (B22) Rear Wheel Speed Sensor Signal circuit and ground.

Is the resistance above 5.0 Ohms?

Yes

- Replace the Rear Wheel Speed Sensor.
- Perform the ABS VERIFICATION TEST. ABS Verification Test

No

- Repair the (B22) Rear Wheel Speed Sensor Signal circuit for a short to ground.
- Perform the ABS VERIFICATION TEST. ABS Verification Test

6. (B222) REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT SHORTED TO GROUND




1. Turn the ignition off.
2. Disconnect the Anti-lock Brake Module harness connector.

NOTE: Check connector - Clean/repair as necessary.

3. Measure the resistance between the (B222) Rear Wheel Speed Sensor Supply circuit and ground.

Is the resistance above 5.0 Ohms?

Yes

- Go To 7

No

- Repair the (B222) Rear Wheel Speed Sensor Supply circuit for a short to ground.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

7. (B222) REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT OPEN




1. Measure the resistance of the (B222) Rear Wheel Speed Sensor Supply circuit.

Is the resistance below 5 Ohms?

Yes

- Go To 8

No

- Repair the open (B222) Rear Wheel Speed Sensor Supply circuit.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

8. (B22) REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT OPEN




1. Measure the resistance of the (B22) Rear Wheel Speed Sensor Signal circuit.

Is the resistance below 5 Ohms?

Yes

- Go To 9

No

- Repair the open (B22) Rear Wheel Speed Sensor Signal circuit.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

9. (B22) REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE




1. Turn the ignition on.
2. Measure the voltage of the (B22) Rear Wheel Speed Sensor Signal circuit.

Is there any voltage present?

Yes

- Repair the (B22) Rear Wheel Speed Sensor Signal circuit for a short to voltage.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

No

- Go To 10

10. (B222) REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT SHORTED TO THE (B22) REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT




1. Turn the ignition off.
2. Measure the resistance between the (B222) Rear Wheel Speed Sensor Supply circuit and the (B22) Rear Wheel Speed Sensor Signal circuit at the Anti-lock Brake Module harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Repair (B222) Rear Wheel Speed Sensor Supply circuit for a short to the (B22) Rear Wheel Speed Sensor Signal circuit.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

No

- Replace the Anti-Lock Brakes Module.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.