DTC 90d0: LOST COMMUNICATION WITH RCM (ROOF CONTROL MODULE): Notes
WARNING: This page is about a different car, the 2009 Dodge Sprinter. However, it is still accessible from the selected car via links, so may be relevant.
For complete wiring diagrams, refer to SYSTEM WIRING DIAGRAMS .
- When Monitored:
With the ignition on.
Battery voltage between 10 and 16 volts.
Ignition Off Draw (IOD) fuse installed.
EIS (CGW) is configured correctly.
- Set Condition:
Bus messages not received from the Roof Control Module (RCM) for approximately two to five seconds.
| Possible Causes |
|---|
| CAN C BUS CIRCUITS OPEN OR SHORTED |
| DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES |
| EIS (CGW) NOT CONFIGURED CORRECTLY |
| ROOF CONTROL MODULE POWER AND GROUND |
| ROOF CONTROL MODULE (RCM) |
| MODULE THAT SET THE DTC |