Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY THE DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Cycle the ignition switch from off to on.
4. With the scan tool, read 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 STANDARD PROCEDURE .
CHECK CONNECTOR/TERMINAL FOR DAMAGE
NOTE:
Check all terminals for broken, bent, pushed out, or corroded terminals.
1. Turn the ignition off.
2. Inspect the Wheel Speed Sensor harness and connector.
3. 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 STANDARD PROCEDURE .
  No
  - Go To 3
CHECK (B2) RIGHT REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT VOLTAGE
1. Disconnect the Right Rear Wheel Speed Sensor harness connector.
2. Turn the ignition on.
3. Measure the voltage between the (B2) Right Rear Wheel Speed Sensor Supply circuit and ground.
  Is the voltage above 10 volts?
  
  Yes
  - Go To 6
  No
  - Go To 4
(B2) RIGHT REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT SHORTED TO GROUND
1. Turn the ignition off.
2. Disconnect the ABS Module harness connector.
3. Measure the resistance between the (B2) Right Rear Wheel Speed Sensor Supply circuit and ground.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the (B2) Right Rear Wheel Speed Sensor Supply circuit for a short to ground.
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 5
(B2) RIGHT REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT OPEN
1. Measure the resistance of the (B2) Right Rear Wheel Speed Sensor Supply circuit between the Right 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 (B2) Right Rear Wheel Speed Sensor Supply circuit.
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
(B1) RIGHT REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
1. Turn the ignition on.
2. Measure the voltage of the (B1) Right Rear Wheel Speed Sensor Signal circuit at the Right Rear Wheel Speed Sensor harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the (B1) Right Rear Wheel Speed Sensor Signal circuit for a short to voltage.
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 7
(B1) RIGHT REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
1. Turn the ignition off.
2. Measure the resistance between the (B1) Right Rear Wheel Speed Sensor Signal circuit and ground.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the (B1) Right Rear Wheel Speed Sensor Signal circuit for a short to ground.
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 8
(B1) RIGHT REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT OPEN
1. Measure the resistance of the (B1) Right Rear Wheel Speed Sensor Signal circuit between the Right Rear Wheel Speed Sensor harness connector and the ABS Module harness connector.
  Is the resistance below 5 Ohms?
  
  Yes
  - Go To 9
  No
  - Repair the open (B1) Right Rear Wheel Speed Sensor Signal circuit.
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
(B2) RIGHT REAR WHEEL SPEED SENSOR SUPPLY CIRCUIT SHORTED TO THE (B1) RIGHT REAR WHEEL SPEED SENSOR SIGNAL CIRCUIT
1. Turn the ignition off.
2. Measure the resistance between the (B2) Right Rear Wheel Speed Sensor Supply circuit and the (B1) Right Rear Wheel Speed Sensor Signal circuit at the ABS Module harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair (B2) Right Rear Wheel Speed Sensor Supply circuit for a short to the (B1) Right Rear Wheel Speed Sensor Signal circuit.
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 10
RIGHT REAR WHEEL SPEED SENSOR
1. Replace the Right 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 STANDARD PROCEDURE .
  CAUTION:
  Make sure braking capability is available before road testing.
3. Road test the vehicle over 40 km/h (25 mph).
  NOTE:
  Vehicle must be driven for several minutes above 40 km/h (25 mph) for set conditions to be meet.
4. With the scan tool, read ABS DTCs.
  Does the DTC remain active?
  
  Yes
  - Replace the Anti-lock 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 STANDARD PROCEDURE .
  No
  - Test complete.