Version Coding - Signal Implausible

P1749

Version coding - signal implausible

Function
In order to permit the OBD to recognise a wrong control module, the wiring harness contains a coding that must agree with the coding programmed in the Tiptronic control module.







Diagnosis condition
- Ignition on

P1749:

Wiring diagram







Diagnosis procedure







1 Check ground at Tiptronic control module connector pin 12.

1. Pull off Tiptronic control module connector.
2. Connect ohmmeter to Tiptronic control module connector pin 12 and ground.
Display: 0... 5 Ohms