Diagnostic Trouble Code (DTC) Information CEM-B112B87

Condition 

The Central Electronic Module (CEM) both transmits and receives information via a standardized serial communication method - LIN (Local Interconnect Network).

The diagnostic trouble code (DTC) is stored if the control module detects that:

• A serious malfunction, e. g., that LIN-communication to Steering wheel module (SWM) is blocked.

The control module's test for the diagnostic trouble code (DTC) starts in the event of:

• Ignition switch position I and II.

Substitute Value 

• None.

Possible Source 

• Short-circuit between the LIN wiring.
• Open-circuit in the LIN wiring.
• Internal fault in another unit in the same part of the LIN network.

Fault symptom[s] 

• Turn signal lever does not work
• Windshield wiper does not work