Jetta Sedan L5-2.5L (CBTA) (2009)
Tow Sensor: Scan Tool Testing and Procedures
Towing Recognition Control Module, Output Diagnostic Test Mode
Special tools, testers and auxiliary items required
‹› Vehicle Diagnosis, Testing and Information System ( VAS 5051A)
‹› Power outlet tester (V.A.G 1537/A)
The towing recognition control module (J345) detects "use of a trailer" by a performance decrease of at least 5 W.
(V.A.G 1537/A) becomes too warm after a few minutes of use and switches off automatically. After a cooling off phase, ( V.A.G 1537/A) functions
normally again.
Test Sequence
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Connect (V.A.G 1537/A).
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Connect the (VAS 5051A).
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On the (VAS 5051A), select "Guided Fault Finding".
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Using the Sprung button, select "Functions/Component selection" and the following menu options in sequence:
‹› Body
‹› Body repair procedures
‹› 01 - On Board Diagnostic (OBD) capable systems
‹› Towing sensor
‹› Functions
‹› Towing Recognition Control Module - output Diagnostic Test Mode (DTM)