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DTC 17978, Control Module Locked (TT 01-99-27)

WARNING: This page is about the Jetta GLS, 1.8 D, AWD, Automatic, which is a different variant/trim than selected.
Publication date: 1999-01-01
Reference number: TT 01-99-27

DTC 17978, CONTROL MODULE LOCKED

DTC 17978, CONTROL MODULE LOCKED

TECH TIPS

Reference Number(s): TT 01-99-27
VOLKSWAGEN: 2000 New Beetle and Golf and Jetta
GROUP: 01 - On Board Diagnostic (OBD)

SERVICE INFORMATION

2000 New Beetle and Golf and Jetta - DTC 17978, Control Module Locked 

DTC 17978 Control Module Locked, occurs in the engine ECM if the ECM is replaced in an immobilizer-equipped vehicle and the new ECM is not matched to the immobilizer. Instructions on how to match the ECM to the immobilizer can be found in Technical Bulletin GROUP 01 NO. 99-11 .