Tiptronic System G50

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






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