Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CEM-4F40

Condition




The central electronic module (CEM) checks the signal from the rear right-hand seat belt buckle.
The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers that the voltage is too low or an open-circuit in the signal cable.
The diagnostic trouble code (DTC) can be diagnosed in key positions I, II and III.

Substitute value
- None.

Possible source
- Short-circuit to ground in the signal cable between the rear right-hand seat belt buckle and the central electronic module (CEM)
- Short-circuit to ground in the connector
- Open-circuit in the signal cable in the seat belt buckle
- Open-circuit in the signal cable between the rear right-hand seat belt buckle and the central electronic module (CEM)
- Cross-connection of signal conductor between the seat belt buckle and the central electronic module (CEM).
- Damaged fuse.

Fault symptom[s]
- The information lamp is lit
- Message in the display.