Volkswagen Jetta, Golf, GTI 1999, 2000
Electrical Equipment On Board Diagnostic (OBD)
Anti - theft immobilizer On Board Diagnostic (OBD) (Page 01-219)
Immobilizer, troubleshooting
Requirements
Voltage supply OK.
Diagnostic wire between instrument cluster and VAG1551 OK.
Valid wiring diagram and Repair Manual available.
Malfunction
Engine does not start (when starting, engine runs and stalls after approx. 1 second)
- Connect VAG 1551 and initiate On Board Diagnostic (OBD).
- Select engine control module with address word 01.
- Check DTC memory (function 02).
Possible cause
DTC 17978 -"Engine control module blocked" is stored in DTC memory