Archive & reference hub
MK3 / A70 markets
Manuals, parts, data

Troubleshooting assistant

Pick a problem area, choose the symptom, then follow the remedy links or step-by-step TSRM procedure.

Diagnostic codes
Searching in 1990 USDM TSRM.
Areas /Theft deterrent C — front door key lock/unlock switch circuit
Step-by-step TSRM procedure

Theft deterrent C — front door key lock/unlock switch circuit

Follow the theft deterrent system flowchart from BE-90.

BE-90
Current check

LH front door key lock switch

Turn ignition switch off. Disconnect computer connector and inspect connector on wire harness side. LH front door key lock switch
Yes

LH lock switch OK

Continue to LH unlocked check.
No

Open circuit

Open circuit in LH front door key lock switch circuit.