Possible Causes
WARNING: This page is about a different car, the 2024 RAM ProMaster EV. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| LOCAL INTERCONNECT NETWORK (LIN) BUS CIRCUIT FAILURE |
| WEAK B+ FEED TO THE ELECTRIC COOLANT HEATER (ECH) |
| WEAK GROUND TO THE ELECTRIC COOLANT HEATER (ECH) |
| ELECTRIC COOLANT HEATER (ECH) |
| ELECTRIC VEHICLE CONTROL UNIT (EVCU) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .