Possible Causes
WARNING: This page is about a different car, the 2014 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| FUSED RUN/START CIRCUIT OPEN |
| VACUUM PUMP RELAY CONTROL CIRCUIT OPEN |
| VACUUM PUMP RELAY CONTROL CIRCUIT SHORTED TO GROUND |
| ELECTRIC VACUUM PUMP RELAY |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .