Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CEM-1C21

Condition
The central electronic module (CEM) checks the output signal to the relay coil for relay infotainment.
Diagnostic trouble code (DTC) CEM-1C21 is stored if the central electronic module (CEM) registers that the output signal to the relay coil is too high.
Diagnostic trouble code (DTC) CEM-1C21 can be detected when the relay is activated.

Substitute value
- None.

Possible source
- Short-circuit to supply voltage in the relay circuit
- Defective relay.

Fault symptom[s]
- Audio unit not operating.