Possible Causes
WARNING: This page is about a different car, the 2019 RAM 3500 HD and 2019 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| LOOSE OR BROKEN ACCESSORY DRIVE BELT OR DEFECTIVE TENSIONER |
| FAULTY BATTERY, CABLES OR CONNECTIONS |
| HIGH RESISTANCE IN THE PCM FUSED B+ CIRCUIT |
| ALTERNATOR |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .