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C101C






C101C-RIGHT FRONT WHEEL SPEED SENSOR SIGNAL ERRATIC PERFORMANCE





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

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

- Set Condition:
Each time excessive wheel speed sensor acceleration or deceleration is detected, a fault counter increments. If the fault counter exceeds a specified value, the DTC will set.





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

Is the status Active for this DTC?

Yes

- Go To 2

No

- Go To 15

2. WHEEL SPEED SENSOR INSPECTION
1. Turn the ignition off to the lock position.
2. Inspect the Wheel Speed Sensor for proper mounting.
3. Inspect the Wheel Speed Sensor harness and connector.
4. Inspect the Wheel Speed Sensor for excessive debris on the sensor.

Were any problems found?

Yes

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

No

- Go To 3

3. TONE WHEEL DAMAGED/MISSING
1. Inspect the Tone Wheel.

NOTE: The Tone Wheel Teeth should be perfectly square, not bent or nicked.

Were any problems found?

Yes

- Replace the Tone Wheel.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

No

- Go To 4

4. EXCESSIVE WHEEL SPEED SENSOR AIR GAP
1. Measure the Wheel Speed Sensor Air Gap.

Were any problems found?

Yes

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

No

- Go To 5

5. WHEEL BEARING LOOSE/BINDING
1. Inspect the wheel bearings for excessive run out or improper clearance.

Were any problems found?

Yes

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

No

- Go To 6

6. (B7) RIGHT FRONT WHEEL SPEED SENSOR SUPPLY CIRCUIT SHORTED TO GROUND




1. Turn the ignition off to the lock position.
2. Disconnect the Right Front Wheel Speed Sensor harness connector.
3. Disconnect the ABS Module harness connector.

NOTE: Check connector - Clean/repair as necessary.

4. Measure the resistance between the (B7) Right Front Wheel Speed Sensor Supply circuit and ground.

Is the resistance above 5.0 Ohms?

Yes

- Go To 7

No

- Repair the (B7) Right Front Wheel Speed Sensor Supply circuit for a short to ground.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

7. (B6) RIGHT FRONT WHEEL SPEED SENSOR SIGNAL CIRCUIT SHORTED TO GROUND




1. Measure the resistance between the (B6) Right Front Wheel Speed Sensor Signal circuit and ground.

Is the resistance above 5.0 Ohms?

Yes

- Go To 8

No

- Repair the (B6) Right Front Wheel Speed Sensor Signal circuit for a short to ground.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

8. (B7) RIGHT FRONT WHEEL SPEED SENSOR SUPPLY CIRCUIT OPEN




1. Measure the resistance of the (B7) Right Front Wheel Speed Sensor Supply circuit.

Is the resistance below 5 Ohms?

Yes

- Go To 9

No

- Repair the open (B7) Right Front Wheel Speed Sensor Supply circuit.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

9. (B6) RIGHT FRONT WHEEL SPEED SENSOR SIGNAL CIRCUIT OPEN




1. Measure the resistance of the (B6) Right Front Wheel Speed Sensor Signal circuit.

Is the resistance below 5 Ohms?

Yes

- Go To 10

No

- Repair the open (B6) Right Front Wheel Speed Sensor Signal circuit.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

10. (B7) RIGHT FRONT WHEEL SPEED SENSOR SUPPLY CIRCUIT SHORTED TO VOLTAGE




1. Ignition on, engine off.
2. Measure the voltage of the (B7) Right Front Wheel Speed Sensor Supply circuit.

Is there any voltage present?

Yes

- Repair (B7) Right Front Wheel Speed Sensor Supply circuit for a short to voltage.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

No

- Go To 11

11. (B6) RIGHT FRONT WHEEL SPEED SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE




1. Measure the voltage of the (B6) Right Front Wheel Speed Sensor Signal circuit.

Is there any voltage present?

Yes

- Repair the (B6) Right Front Wheel Speed Sensor Signal circuit for a short to voltage.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

No

- Go To 12

12. (B7) RIGHT FRONT WHEEL SPEED SENSOR SUPPLY CIRCUIT SHORTED TO THE (B6) RIGHT FRONT WHEEL SPEED SENSOR SIGNAL CIRCUIT




1. Turn the ignition off to the lock position.
2. Measure the resistance between the (B7) Right Front Wheel Speed Sensor Supply circuit and the (B6) Right Front Wheel Speed Sensor Signal circuit at the ABS Module harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Repair (B7) Right Front Wheel Speed Sensor Supply circuit for a short to the (B6) Right Front Wheel Speed Sensor Signal circuit.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

No

- Go To 13

13. RIGHT FRONT WHEEL SPEED SENSOR




1. Connect the Right Front Wheel Speed Sensor harness connector.
2. Measure the resistance between the (B7) Right Front Wheel Speed Sensor Supply circuit and (B6) Right Front Wheel Speed Sensor Signal circuit at the ABS Module harness connector.

NOTE: The resistance should be approximately 1600-2300 Ohms at 76° F (24.5° C).

Is the resistance within the noted range?

Yes

- Go To 14

No

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

14. ANTI-LOCK BRAKE SYSTEM (ABS) MODULE
1. Inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
2. Inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.
3. Perform any Technical Service Bulletins that may apply.

Were any problems found?

Yes

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

No

- Replace the Anti-lock Brake System (ABS) Module.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

15. WIRING HARNESS INSPECTION
1. Turn the ignition off to the lock position.

NOTE: Towing the vehicle with ignition ON may set this DTC.

2. Inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
3. Inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.
4. Perform any Technical Service Bulletins that may apply.

Were any problems found?

Yes

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

No

- Test Complete.

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