Tow Sensor: Description and Operation

Towing Recognition Control Module

Towing Recognition Control Module - arrow - is located behind side trim at left rear in luggage compartment.





• Additional information:

318Golf 2004

319Golf 2004 - Electrical System



=> Owner's Manual

• At this time, only control modules manufactured by Westphalia are installed in the Golf.

• Use the power outlet tester (V.A.G 1537/A) or (VAS 5800) to test the control module.

Control Module for towing sensor (J345) detects from a performance decrease of at least 5 W the "use of trailer " and sends this information to diverse control modules via CAN-Bus.

Via CAN-Bus, Control Module for towing sensor ( J345) is supplied with information (light control) from Vehicle Electrical System Control Module (J519) and Comfort System Central Control Module (J393).

* At least the turn signal or parking light must be switched on to detect "use of trailer".

DTC recognition and display:

Control Module for towing sensor (J345) is equipped with On Board Diagnostics (OBD) which assists troubleshooting.

For troubleshooting, use Vehicle Diagnostic, Testing and Information System (VAS 5051A) in operating mode " Guided Fault Finding".

The trailer socket can be checked with the trailer socket tester (VAS 5800) or socket tester ( V.A.G 1537/A)

Special tools, testers and auxiliary items required

• Trailer socket tester (VAS 5800)

• Power outlet tester (V.A.G 1537/A)

* Power outlet tester (V.A.G 1537/A ) becomes too warm after a few minutes of use and switches off automatically. After a cooling off phase, power outlet tester (V.A.G 1537/A ) functions normally again.