C1018

C1018-RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT HIGH





For a complete wiring diagram consult Diagrams/Electrical.


- When Monitored:
With the ignition on.

- Set Condition:
If the Right Front Wheel Speed Sensor circuit fails the diagnostic test.








Diagnostic Test


1. CHECK FOR DTC C1018-RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT HIGH
NOTE: This DTC must be active for the results of this test to be valid.

Turn the ignition on.
With the scan tool, record and erase DTCs.
Cycle the ignition switch from off to on.
With the scan tool, read DTCs.
Does the scan tool display: C1018-RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT HIGH?

Yes


- Go To 2


No



- Refer to the ABS-INTERMITTENT CONDITION TEST. Testing and Inspection




2. CHECK CONNECTOR/TERMINAL FOR DAMAGE

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

Turn the ignition off.
Inspect the Anti-Lock Brake Module harness connector, Right Front WSS, and Right Front WSS harness connector.
Is the Right Front WSS or any of the connectors/terminals damaged?

Yes


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


No


- Go To 3




3. CHECK (B7) RIGHT FRONT WSS 12 VOLT SUPPLY CIRCUIT VOLTAGE




Disconnect the Right Front WSS harness connector.
Turn the ignition on.
Measure the voltage of the (B7) Right Front WSS 12 Volt Supply circuit.
Is the voltage above 10.0 volts?

Yes


- Go To 5


No


- Go To 4




4. CHECK (B7) RIGHT FRONT WSS 12 VOLT SUPPLY CIRCUIT FOR AN OPEN




Connect a jumper wire between ground and the (B7) Right Front WSS Supply circuit in the Anti-Lock Brakes Module harness connector.
Using a 12-volt test light connected to 12-volts, probe the (B7) Right Front WSS Supply circuit.
Does the test light illuminate brightly?

Yes


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


No


- Repair the (B7) Right Front WSS Supply circuit for an open.
- Perform ABS VERIFICATION TEST. ABS Verification Test




5. CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT OPEN




Connect a jumper wire between ground and the (B6) Right Front WSS Signal circuit in the Anti-Lock Brakes Module harness connector.
Using a 12-volt test light connected to 12-volts, probe the (B6) Right Front WSS Signal circuit.
Does the test light illuminate brightly?

Yes


- Go To 6


No


- Repair the (B6) Right Front WSS Signal circuit for an open.
- Perform ABS VERIFICATION TEST. ABS Verification Test




6. CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT FOR AN SHORT TO VOLTAGE




Turn the ignition on.
Remove all jumper wires.
Measure the voltage between the (B6) Right Front WSS Signal circuit and ground.
Is the voltage above one volt?

Yes


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


No


- Go to 7




7. CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT AND (B7) RIGHT FRONT WSS 12 VOLT SUPPLY CIRCUIT SHORTED TOGETHER




Turn the ignition off.
Measure the resistance between the (B6) Right Front WSS Signal circuit and the (B7) Right Front WSS Supply circuit.
Is the resistance above 120 ohms?

Yes

Go To 8


No


- Repair the (B6) Right Front WSS Signal circuit and the (B7) Right Front WSS Supply circuit for a short together.
- Perform ABS VERIFICATION TEST. ABS Verification Test.




8. RIGHT FRONT WHEEL SPEED SENSOR
Replace the Right Front Wheel Speed Sensor.
Perform ABS VERIFICATION TEST. ABS Verification Test.

CAUTION: Ensure brake capability is available before road testing.

Road test the vehicle over 40 km/h (25 mph.).

NOTE: Vehicle must be driven above 40 km/h (25 mph) for set conditions to be meet.

With the scan tool, read ABS DTCs.
Did DTC C1018-RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT HIGH reset?

Yes


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


No


- Test Complete.