Abcence of LIN bus 1 communication
â–¶ How to fix
• Try to run the auto adress routine of the LIN actuators. • Check connector and wiring for LIN Bus 1 on MBS. • Check the common 12V power feed to the LIN actuators.
What you'll see
Defroster may not work as intended.
System reaction
Functions dependent on information on LIN Bus 1 are degraded/missing in MBS (Master), such as the air flaps connected to the defroster.
Diagnostic depth
Detection
The fault is validated as present if the ECU does not detect communication on LIN Bus 1 within the timeout period
Possible cause
• LIN actuators on LIN Bus 1 not auto adressed. • Defective connection/wiring for LIN Bus 1. • Defective actuators on LIN Bus 1. • Defective common 12V power supply to LIN actuators.