Diagnostic Test

VERIFY THE DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, erase DTCs.
3. Cycle the ignition switch from off to on.
4. With the scan tool, select View DTCs.
  Is the DTC active at this time?
  
  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 TEST. Refer to ABS INTERMITTENT CONDITION .
CHECK CONNECTOR/TERMINAL FOR DAMAGE
NOTE:
Check all terminals for broken, bent, pushed out, or corroded terminals.
1. Turn the ignition off to the lock position.
2. Inspect the Wheel Speed Sensor for proper mounting.
3. Inspect the Wheel Speed Sensor harness and connector.
4. Inspect the Wheel Speed Sensor for excessive debris on the sensor.
  Were any problems found?
  
  Yes
  - Repair as necessary in accordance with the Service Information.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Go To 3.
CHECK (B4) LEFT REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT VOLTAGE

Fig 1: Measuring Left Front Wheel Speed Sensor Supply Circuit Voltage
Courtesy of CHRYSLER GROUP, LLC
1. Disconnect the Left Rear Wheel Speed Sensor harness connector.
2. Turn the ignition on.
3. Measure the voltage between the (B4) Left Rear Wheel Speed Sensor Signal circuit and ground.
  Is the voltage above 10 volts?
  
  Yes
  - Go To 6.
  No
  - Go To 4.
(B4) LEFT REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

Fig 2: Checking Left Front Wheel Speed Sensor Supply Circuit For A Short To Ground
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the ABS Module harness connector.
3. Measure the resistance between the (B4) Left Rear Wheel Speed Sensor Signal circuit and ground.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the (B4) Left Rear Wheel Speed Sensor Signal circuit for a short to ground.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Go To 5.
(B4) LEFT REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT FOR AN OPEN

Fig 3: Checking Left Rear Wheel Speed Sensor Signal Circuit For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (B4) Left Rear Wheel Speed Sensor Signal circuit between the Left Rear Wheel Speed Sensor harness connector and the ABS harness connector.
  Is the resistance below 5 Ohms?
  
  Yes
  - Go To 6.
  No
  - Repair the open (B4) Left Rear Wheel Speed Sensor Signal circuit.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
(B3) LEFT REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE

Fig 4: Checking Left Front Wheel Speed Sensor Signal Circuit For A Short To Voltage
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition on.
2. Measure the voltage of the (B3) Left Rear Wheel Speed Sensor Supply circuit at the Left Rear Wheel Speed Sensor harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (B3) Left Rear Wheel Speed Sensor Supply circuit for a short to voltage.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Go To 7.
(B3) LEFT REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

Fig 5: Checking Left Front Wheel Speed Sensor Signal Circuit For A Short To Ground
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Measure the resistance between the (B3) Left Rear Wheel Speed Sensor Supply circuit and ground.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the (B3) Left Rear Wheel Speed Sensor Supply circuit for a short to ground.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Go To 8.
(B3) LEFT REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT FOR AN OPEN

Fig 6: Checking Left Rear Wheel Speed Sensor Signal Circuit For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (B3) Left Rear Wheel Speed Sensor Supply circuit between the Left Rear Wheel Speed Sensor harness connector and the ABS harness connector.
  Is the resistance below 5 Ohms?
  
  Yes
  - Go To 9.
  No
  - Repair the open (B3) Left Rear Wheel Speed Sensor Supply circuit.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
(B4) LEFT REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT FOR A SHORT TO THE (B3) LEFT REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT

Fig 7: Checking Left Front Wheel Speed Sensor Supply Circuit For A Short To The Left Front Wheel Speed Sensor Signal Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off to the lock position.
2. Measure the resistance between the (B3) Left Rear Wheel Speed Sensor Supply circuit and the (B4) Left Rear Wheel Speed Sensor Signal circuit at the ABS Module harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair (B3) Left Rear Wheel Speed Sensor Supply circuit for a short to the (B4) Left Rear Wheel Speed Sensor Signal circuit.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Go To 10.
LEFT REAR WHEEL SPEED SENSOR
1. Replace the Left Rear Wheel Speed Sensor in accordance with the Service Information. Refer to SENSOR, WHEEL SPEED, FRONT, REMOVAL .
2. Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  CAUTION:
  Make sure brake capability is available before road testing.
3. 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.
4. With the scan tool, read ABS DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Replace the Antilock Brake System (ABS) Module in accordance with the Service Information. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM, REMOVAL .
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Test complete.