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 |
|---|
| LOW DATA LINK (-) CIRCUIT SHORTED TO VOLTAGE |
| LOW DATA LINK (-) CIRCUIT SHORTED TO GROUND |
| LOW DATA LINK (-) CIRCUIT OPEN/HIGH RESISTANCE |
| HIGH DATA LINK (+) CIRCUIT SHORTED TO VOLTAGE |
| HIGH DATA LINK (+) CIRCUIT SHORT TO GROUND |
| HIGH DATA LINK (+) CIRCUIT OPEN/HIGH RESISTANCE |
| ASD SUPPLY CIRCUIT OPEN/HIGH RESISTANCE |
| ASD SUPPLY CIRCUIT SHORT TO GROUND |
| FUSED B+ CIRCUIT OPEN/HIGH RESISTANCE |
| FUSED B+ CIRCUIT SHORT TO GROUND |
| DEF HCU GROUND CIRCUIT OPEN/HIGH RESISTANCE |
| DEF HEATER CONTROL UNIT |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .