Diagnostic Test

WARNING: This page is about a different car, the 2007 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

1) CHECK FOR DTC C102B-RIGHT REAR WHEEL SPEED SENSOR CIRCUIT
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: C102B-RIGHT REAR WHEEL SPEED SENSOR CIRCUIT?

Yes
1. Go to 2).
No
1. 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.
2. Refer to ABS-INTERMITTENT CONDITION in DIAGNOSIS AND TESTING.
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
1. Repair as necessary.
2. Perform ABS VERIFICATION TEST .
No
1. Go to 3).
3) CHECK (B2) RIGHT REAR WSS 12 VOLT SUPPLY CIRCUIT VOLTAGE

Fig 1: Checking Right Rear WSS 12-Volt Supply Circuit Voltage
Courtesy of CHRYSLER LLC

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
1. Go to 6).
No
1. Go to 4).
4) CHECK (B2) RIGHT REAR WSS 12 VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND

Fig 2: Checking Right Rear WSS 12-Volt Supply Circuit For A Short To Ground
Courtesy of CHRYSLER LLC

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
1. Repair the (B2) Right Rear WSS Supply circuit for a short to ground.
2. Perform ABS VERIFICATION TEST .
No
1. Go to 5).
5) CHECK (B2) RIGHT REAR WSS 12 VOLT SUPPLY CIRCUIT FOR AN OPEN

Fig 3: Checking Right Rear WSS 12-Volt Supply Circuit For Open
Courtesy of CHRYSLER LLC

Connect a jumper wire between ground and the (B2) Right Rear WSS Supply circuit in the Anti-Lock Brakes 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
1. Replace the Anti-Lock Brakes Module in accordance with the Service Information.
2. Perform ABS VERIFICATION TEST .
No
1. Repair the (B2) Right Rear WSS Supply circuit for an open.
2. Perform ABS VERIFICATION TEST .
6) CHECK (B1) RIGHT REAR WSS SIGNAL CIRCUIT FOR A SHORT TO GROUND

Fig 4: Checking Right Rear WSS Signal Circuit For Short To Ground
Courtesy of CHRYSLER LLC

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
1. Repair the (B1) Right Rear WSS Signal circuit for a short to ground.
2. Perform ABS VERIFICATION TEST .
No
1. Go to 7).
7) CHECK (B1) RIGHT REAR WSS SIGNAL CIRCUIT FOR AN OPEN

Fig 5: Checking Right Rear WSS Signal Circuit For Open
Courtesy of CHRYSLER LLC

Connect a jumper wire between ground and the (B1) Right Rear WSS Signal circuit in the Anti-Lock Brakes Module 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
1. Go to 8).
No
1. Repair the (B1) Right Rear WSS Signal circuit for an open.
2. Perform ABS VERIFICATION TEST .
8) CHECK (B1) RIGHT REAR WSS SIGNAL CIRCUIT SHORT TO VOLTAGE

Fig 6: Checking Right Rear WSS Signal Circuit For Short To Voltage
Courtesy of CHRYSLER LLC

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
1. Repair the (B1) Right Rear WSS Signal circuit for a short to voltage.
2. Perform ABS VERIFICATION TEST .
No
1. Go to 9).
9) CHECK (B1) RIGHT REAR WSS SIGNAL CIRCUIT FOR A SHORT TO (B2) RIGHT REAR WSS 12 VOLT SUPPLY CIRCUIT

Fig 7: Checking Right Rear WSS Signal Circuit For A Short To Right Rear WSS 12-Volt Supply Circuit
Courtesy of CHRYSLER LLC

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 step 10).

No
1. Repair the (B1) Right Rear WSS Signal circuit and the (B2) Right Rear WSS Supply circuit for a short together.
2. Perform ABS VERIFICATION TEST .
10) RIGHT REAR WHEEL SPEED SENSOR
Replace the Right Rear Wheel Speed Sensor in accordance with the Service Information.

Perform 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 C102B-RIGHT REAR WHEEL SPEED SENSOR CIRCUIT reset?

Yes
1. Replace the Anti-Lock Brakes Module in accordance with the Service Information.
2. Perform ABS VERIFICATION TEST .
No
1. Test Complete.