Towing Recognition Control Module -J345-: Notes

General Information 

The Towing Recognition Control Module -J345- recognizes "trailer mode" when there is a power decrease of at least 5 W and transmits this information to various control modules via the CAN data bus.

The Vehicle Electrical System Control Module -J519- and the Comfort System Central Control Module -J393- supply the Towing Recognition Control Module -J519- with information via the CAN data bus.

1. At least turn signals or side marker lamps must be switched on to detect "trailer mode".

For information on testing control modules, diagnosing malfunctions, malfunction indicators and fault finding. Refer to [For engine(s) CNNA, CCTA, CBFA] Towing Recognition Control Module J345 .