Diagnostic Trouble Code (DTC) Memory blink codes, displaying: Notes

Starting with 8.94 production (1995 m.y.), Golf, GTI, Jetta, and Cabrio vehicles are equipped with a special OBD1 adapter for use with the On Board Diagnostic (OBD) system.

The adapter is used to check Diagnostic Trouble Code (DTC) Memory when the VAG 1551 Scan Tool (ST) is not available. Stored malfunctions are displayed as blink codes by the Malfunction Indicator Lamp (MIL) in the vehicle.

Fig 1: Identifying Special OBD1 Adapter

Blink code display is activated by using the adapter in conjunction with the vehicle's Data Link Connector (DLC). The adapter makes connection between connector sockets 15 (L-wire) and 4 (Battery Ground).

Fig 2: Identifying Connection Between Connector Sockets And Battery Ground