Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

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 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 Brake Pedal Travel Sensor for proper mounting.
3. Inspect the Brake Pedal Travel Sensor harness and connector.
4. Inspect the Anti-lock Brake System (ABS) Module harness and connector.
  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
(B937) PEDAL TRAVEL SENSOR RETURN CIRCUIT SHORTED TO VOLTAGE
1. Disconnect the ABS Module harness connector.
2. Disconnect the Brake Pedal Travel Sensor harness connector.
3. Turn the ignition on.
4. Measure the voltage between the (B937) Pedal Travel Sensor Return circuit and ground.
  Is the voltage above 5 volts?
  
  Yes
  - Repair the (B937) Pedal Travel Sensor Return circuit for a short to voltage.
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 4
(B237) PEDAL TRAVEL SENSOR FEED CIRCUIT SHORTED TO VOLTAGE
1. Measure the voltage between the (B237) Pedal Travel Sensor Feed circuit and ground.
  Is the voltage above 5 volts?
  
  Yes
  - Repair the (B237) Pedal Travel Sensor Feed circuit for a short to voltage.
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 5
(B237) PEDAL TRAVEL SENSOR FEED CIRCUIT SHORTED TO GROUND
1. Turn the ignition off.
2. Measure the resistance between the (B237) Pedal Travel Sensor Feed circuit and ground.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the (B237) Pedal Travel Sensor Feed circuit for a short to ground.
  - Perform the ABS VERIFICATION. Refer to STANDARD PROCEDURE .
  No
  - Go To 6
BRAKE PEDAL POSITION (BPP) SENSOR
1. Replace the Brake Pedal Position Sensor in accordance with the Service Information. Refer to SWITCH, STOP LAMP, REMOVAL .
2. Turn the ignition on.
  NOTE:
  When performing the Brake Pedal Calibration routine, make sure the brake pedal is not pressed.
3. With the scan tool, under "Miscellaneous Functions" run the Brake Pedal Calibration routine.
4. With the scan tool, erase the DTCs.
5. With the scan tool, read the 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.
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .