DTC 90D1: Lost Communication With Roof Control Module: Notes
WARNING: This page is about a different car, the 2007 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 article.
- When Monitored:
With the ignition on.
Battery voltage between 10 and 16 volts.
IOD fuse installed.
EIS (CGW) is configured correctly.
- Set Condition:
Bus messages not received from the RCM for approximately 2 to 5 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 |
| MODULE THAT SET THE DTC |