Diagnostic Trouble Code (DTC) Information CEM-DF07
Condition
The central electronic module (CEM) checks the voltage in CAN L and CAN H on the low speed network.
The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers a short-circuit between CAN L and CAN H in the low speed network.
The diagnostic trouble code (DTC) can be diagnosed with the ignition in positions I or II.
In the event of DFxx diagnostic trouble codes (DTCs), the central electronic module (CEM) must not be replaced as the diagnostic trouble code (DTC) indicates a short-circuit in one or more conductors in the Control area network The central electronic module (CEM) is the only control module that monitors the voltage level in the Control area network wiring. The central electronic module (CEM) is therefore the only control module that can store a diagnostic trouble code (DTC) for a short-circuit in one of the cables to ground or supply voltage. Do not replace the central electronic module (CEM) in the event of a CAN fault unless VIDA fault-tracing has indicated that the central electronic module (CEM) has an internal fault.
Substitute Value
- None.
Possible Source
- Short-circuit between CAN L and CAN H in the low speed network.
Fault symptom[s]
- No gauges working
- The instrument lighting does not operate
- Cannot be controlled using the remote control.