FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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1000 - 1999: 1110







1110 - RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT





When Monitored and Set Condition

- When Monitored (Supply circuit): Ignition on. The Controller Antilock Brake (CAB) monitors the wheel speed circuit every 7 milliseconds (ms).
- When Monitored (Signal circuit): Wheel speed comparison is checked at drive off or every 7 milliseconds (ms). Sensor Signal continuity is checked every 7 milliseconds. Wheel speed phase length supervision is checked every 7 milliseconds.
- Set Condition (Supply circuit): If the CAB detects an open or shorted wheel speed sensor circuit, the Diagnostic Trouble Code (DTC) will set.
- Set Condition (Signal circuit): If, during an ABS stop, the CAB commands any valve solenoid on for an extended length of time, and does not see a corresponding wheel speed change, the Diagnostic Trouble Code (DTC) is set. The DTC can also set if the Signal is missing or erratic.





For a complete Antilock Brake System (ABS) Circuit Diagram Brakes - ABS Electrical Diagnostics.

Diagnostic Test

1. WITH THE SCAN TOOL, READ DTCs
Turn the ignition on.
With the scan tool, record and erase DTCs.
Turn the ignition off.
Turn the ignition on.
With the scan tool, read DTCs.
Does the scan tool display a Right Front Wheel Speed Sensor Circuit DTC?

Yes

- Go to 2

No

- Go to 13

2. INSPECT THE RIGHT FRONT WHEEL SPEED SENSOR
Turn the ignition off.
Inspect the Right Front Wheel Speed Sensor and connector.
Is the Sensor or Connector damaged?

Yes

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

No

- Go to 3

3. MEASURE THE VOLTAGE OF THE RIGHT FRONT WHEEL SPEED SENSOR 12 VOLT SUPPLY CIRCUIT




With the ignition off.
Disconnect the Right Front Wheel Speed Sensor harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Turn the ignition on.
Measure the voltage of the Right Front Wheel Speed Sensor 12 Volt Supply circuit at the Right Front Wheel Speed Sensor harness connector.
Is the voltage above 10 volts?

Yes

- Go to 8

No

- Go to 4

4. MEASURE THE VOLTAGE OF THE RIGHT FRONT WHEEL SPEED SENSOR 12 VOLT SUPPLY CIRCUIT




Turn the ignition off.
Measure the voltage of the Right Front Wheel Speed Sensor 12 Volt Supply circuit at the Right Front Wheel Speed Sensor harness connector.
Is the voltage below 1.0 volt?

Yes

- Go to 6

No

- Go to 5

5. CHECK THE RIGHT FRONT WHEEL SPEED SENSOR 12 VOLT SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE




With the ignition off.
Disconnect the CAB harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the voltage of the Right Front Wheel Speed Sensor 12 Volt Supply circuit.
Is the voltage below 1.0 volt?

Yes

- Replace the Controller Antilock Brake (CAB) Module. Removal.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Repair the Right Front Wheel Speed Sensor 12 Volt Supply circuit for a short to voltage.
- Perform ABS VERIFICATION TEST. ABS Verification Test

6. MEASURE THE RESISTANCE BETWEEN GROUND AND THE RIGHT FRONT WHEEL SPEED SENSOR 12 VOLT SUPPLY CIRCUIT




With the ignition off.
Disconnect the CAB harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance between ground and the Right Front Wheel Speed Sensor 12 Volt Supply circuit at the CAB harness connector.
Is the resistance below 100k ohms?

Yes

- Repair the Right Front Wheel Speed Sensor 12 Volt Supply circuit for a short to ground.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Go to 7

7. MEASURE THE RESISTANCE OF THE RIGHT FRONT WHEEL SPEED SENSOR 12 VOLT SUPPLY CIRCUIT




With the ignition off.
Measure the resistance of the Right Front Wheel Speed Sensor 12 Volt Supply circuit from the CAB harness connector to the Right Front Wheel Speed Sensor harness connector.
Is the resistance below 5.0 ohms?

Yes

- Go to 8

No

- Repair the Right Front Wheel Speed Sensor 12 Volt Supply circuit for an open.
- Perform ABS VERIFICATION TEST. ABS Verification Test

8. MEASURE THE RESISTANCE OF THE RIGHT FRONT WHEEL SPEED SENSOR SIGNAL CIRCUIT




With the ignition off.
Reconnect the CAB harness connector.
Measure the resistance between ground and the Right Front Wheel Speed Sensor Signal circuit.
Is the resistance less than 100 ohms?

Yes

- Go to 11

No

- Go to 9

9. MEASURE THE RESISTANCE OF THE RIGHT FRONT WHEEL SPEED SENSOR SIGNAL CIRCUIT




With the ignition off.
Measure the resistance between ground and the Right Front Wheel Speed Sensor Signal circuit.
Is the resistance greater than 300 ohms?

Yes

- Go to 10

No

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

10. MEASURE THE RESISTANCE OF THE RIGHT FRONT WHEEL SPEED SENSOR SIGNAL CIRCUIT




With the ignition off.
Disconnect the CAB harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance of the Right Front Wheel Speed Sensor Signal circuit from the CAB harness connector to the Right Front Wheel Speed Sensor harness connector.
Is the resistance below 5.0 ohms?

Yes

- Go to 12

No

- Repair the Right Front Wheel Speed Sensor Signal circuit for an open.
- Perform ABS VERIFICATION TEST. ABS Verification Test.

11. MEASURE THE RESISTANCE BETWEEN GROUND AND THE RIGHT FRONT WHEEL SPEED SENSOR SIGNAL CIRCUIT




With the ignition off.
Disconnect the CAB harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance between ground and the Right Front Wheel Speed Sensor Signal circuit at the CAB harness connector.
Is the resistance below 100k ohms?

Yes

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

No

- Go to 12

12. MEASURE THE RESISTANCE BETWEEN THE RIGHT FRONT WHEEL SPEED SENSOR 12 VOLT SUPPLY CIRCUIT AND THE SENSOR SIGNAL CIRCUIT




With the ignition off.
Measure the resistance between the Right Front Wheel Speed Sensor 12 Volt Supply circuit and the Right Front Wheel Speed Sensor Signal circuit at the CAB harness connector.
Is the resistance below 100k ohms?

Yes

- Repair the Right Front Wheel Speed Sensor 12 Volt Supply circuit for a short to the Right Front Wheel Speed Sensor Signal circuit.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Replace the Controller Antilock Brake (CAB) Module. Removal.
- Perform ABS VERIFICATION TEST. ABS Verification Test

13. VISUALLY INSPECT COMPONENTS FOR DAMAGE AND CORRECT INSTALLATION
Visually inspect the related wiring harness and connectors. Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out, or corroded terminals.
Visually inspect the Right Front Wheel Speed Sensor, connector and tone wheel for damage and correct installation.
Are there any visible Sensor, connector or tone wheel concerns?

Yes

- Correct the sensor, connector or tone wheel concerns as necessary.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Go to 14

14. MONITOR ALL WHEEL SPEED SENSORS WITH THE SCAN TOOL
With the scan tool, erase DTCs.
Start the engine.
With an assistant to drive, use the scan tool to monitor all wheel speed sensors. Slowly accelerate as straight as possible from a stop to 24 km/h (15 MPH).
Is the Right Front Wheel Speed Sensor Signal 0 or differing from others by more than 5 km/h (3 MPH)?

Yes

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

No

- Inspect and repair the related wiring harness for a possible intermittent condition.
- Perform ABS VERIFICATION TEST. ABS Verification Test