Theory Of Operation
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.
The brake switch stuck on test checks for a high vehicle speed condition where the brake switch is continually pressed.
- When Monitored:
With the ignition on.
- Set Condition: The brake switch rationality checks both failure modes of the Brake Pedal Position (BPP) Sensor. The brake switch stuck on test checks for a high vehicle speed condition where the brake pedal is continually pressed. The brake switch stuck off test checks for brake pressure present with the brake switch saying not pressed.
Possible Causes
| BRAKE PEDAL POSITION (BPP) SENSOR IMPROPERLY INSTALLED, DAMAGE OR MECHANICAL FAILURE |
| BRAKE PEDAL POSITION (BPP) SENSOR NOT CALIBRATED |
| BRAKE PEDAL POSITION ASSEMBLY |
| BRAKE PEDAL POSITION (BPP) SENSOR |
| ANTI-LOCK BRAKE SYSTEM (ABS) MODULE |