Right Front Sensor Circuit Failure

RIGHT FRONT SENSOR CIRCUIT FAILURE





For a complete wiring diagram Consult Diagrams/Electrical.

- When Monitored:
With the ignition on.

- Set Condition:
If the CAB detects an open or shorted wheel speed sensor circuit, the Diagnostic Trouble Code (DTC) will set.





Diagnostic Test

1. CHECK FOR DTC RIGHT FRONT SENSOR CIRCUIT FAILURE
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: RIGHT FRONT SENSOR CIRCUIT FAILURE?

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 diagnostic procedure. ABS Intermittent Condition Test

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 Controller (CAB) 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 6

No

- Go To 4

4. CHECK (B7) RIGHT FRONT WSS 12 VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND




Turn the ignition off.
Disconnect the Right Front WSS harness connector.
Disconnect the Anti-Lock Brake Controller (CAB) 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

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

No

- Go To 5

5. 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 Controller (CAB) 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 Controller (CAB).
- 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

6. CHECK (B6) RIGHT FRONT WSS SIGNAL CIRCUIT SHORT TO GROUND




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

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

No

- Go To 7

7. 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 Controller (CAB) 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 8

No

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

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




Turn the ignition on.
Remove all jumper wires.
Using a 12-volt test light connected between the (B6) Right Front WSS Signal circuit and ground.
Does the test light illuminate brightly?

Yes

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

No

- Go To9

9. 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 5.0 ohms?

Yes

Go To 10

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

10. 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 25 km/h (15 m.p.h.).

NOTE: Vehicle must be driven above 25 km/h (15 m.p.h.) for set conditions to be meet.

With the scan tool, read ABS DTCs.
Did DTC RIGHT FRONT SENSOR CIRCUIT FAILURE reset?

Yes

- Replace the Anti-Lock Brakes Controller (CAB).
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Test Complete.