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.

BRAKE PEDAL CALIBRATION
1. Turn the ignition on.
2. With the scan tool, read and record the ABS DTCs.
  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. Park the vehicle.
  Was the Brake Pedal Calibration routine successful?
  
  Yes
  - Go To 2
  No
  - Perform the Brake Pedal Calibration routine again, if still unsuccessful.
  - Go To 3
VERIFY THE DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, erase the DTCs.
3. Start the engine.
4. Press the brake pedal slowly.
5. With the scan tool, read ABS DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go To 3
  No
  - Test complete.
INSPECT THE BRAKE PEDAL POSITION (BPP) SENSOR FOR INCORRECT INSTALLATION, DAMAGE OR MECHANICAL FAILURE
1. Turn the ignition off.
2. Visually inspect the BPP Sensor for Improper installation, damage or mechanical failure. Refer to SWITCH, STOP LAMP, INSTALLATION .
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 4
MASTER CYLINDER BRAKE PRESSURE
1. Turn the ignition on.
2. With the scan tool, under "Data Display" monitor the Master Cylinder Brake Pressure and the Brake Pedal Sensor voltage.
3. Press the brake pedal slowly.
  Did the Master Cylinder Brake Pressure and the Brake Pedal Sensor voltage change?
  
  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
  - Go To 5
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 .