Right Rear Sensor Circuit Failure

RIGHT REAR 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 REAR 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 REAR 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 Module harness connector, Right Rear WSS, and Right Rear WSS harness connector.
Is the Right Rear 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 (B2) RIGHT REAR WSS 12 VOLT SUPPLY CIRCUIT VOLTAGE




Disconnect the Right Rear WSS harness connector.
Turn the ignition on.
Measure the voltage of the (B2) Right Rear WSS 12 Volt Supply circuit.
Is the voltage above 10.0 volts?

Yes

- Go To 6

No

- Go To 4

4. CHECK (B2) RIGHT REAR WSS 12 VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND




Turn the ignition off.
Disconnect the Right Rear WSS harness connector.
Disconnect the Anti-Lock Brake Module harness connector.
Using a 12-volt test light connected to 12-volts, probe the (B2) Right Rear WSS Supply circuit.
Does the test light illuminate brightly?

Yes

- Repair the (B2) Right Rear WSS Supply circuit for a short to ground.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Go To 5

5. CHECK (B2) RIGHT REAR WSS 12 VOLT SUPPLY CIRCUIT FOR AN OPEN




Connect a jumper wire between ground and the (B2) Right Rear WSS Supply circuit in the Anti-Lock Brakes Controller (CAB) harness connector.
Using a 12-volt test light connected to 12-volts, probe the (B2) Right Rear 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 (B2) Right Rear WSS Supply circuit for an open.
- Perform ABS VERIFICATION TEST. ABS Verification Test

6. CHECK (B1) RIGHT REAR WSS SIGNAL CIRCUIT FOR A SHORT TO GROUND




Using a 12-volt test light connected to 12-volts, probe the (B1) Right Rear WSS Signal circuit.
Does the test light illuminate brightly?

Yes

- Repair the (B1) Right Rear WSS Signal circuit for a short to ground.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Go To 7

7. CHECK (B1) RIGHT REAR WSS SIGNAL CIRCUIT FOR AN OPEN




Connect a jumper wire between ground and the (B1) Right Rear WSS Signal circuit in the Anti-Lock Brakes Controller (CAB) harness connector.
Using a 12-volt test light connected to 12-volts, probe the (B1) Right Rear WSS Signal circuit.
Does the test light illuminate brightly?

Yes

- Go To 8

No

- Repair the (B1) Right Rear WSS Signal circuit for an open.
- Perform ABS VERIFICATION TEST. ABS Verification Test

8. CHECK (B1) RIGHT REAR WSS SIGNAL CIRCUIT SHORT TO VOLTAGE




Turn the ignition on.
Remove all jumper wires.
Using a 12-volt test light connected to 12-volts, probe the (B1) Right Rear WSS Signal circuit.
Does the test light illuminate brightly?

Yes

- Repair the (B1) Right Rear WSS Signal circuit for a short to voltage.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Go To9

9. CHECK (B1) RIGHT REAR WSS SIGNAL CIRCUIT FOR A SHORT TO (B2) RIGHT REAR WSS 12 VOLT SUPPLY CIRCUIT




Turn the ignition off.
Measure the resistance between the (B1) Right Rear WSS Signal circuit and the (B2) Right Rear WSS Supply circuit.
Is the resistance above 5.0 ohms?

Yes

Go To 10

No

- Repair the (B1) Right Rear WSS Signal circuit and the (B2) Right Rear WSS Supply circuit for a short together.
- Perform ABS VERIFICATION TEST. ABS Verification Test

10. RIGHT REAR WHEEL SPEED SENSOR
Replace the Right Rear 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 mph).

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

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

Yes

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

No

- Test Complete.