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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
Step-by-step TSRM procedure

Theft deterrent L — theft deterrent horn circuit

Follow the theft deterrent system flowchart from BE-97.

Previous checks
DoneIs HAZ-HORN fuse normal
You chose: No
Go back here
Is HAZ-HORN fuse normal?
Result
Replace fuse. Is operation normal?
Short circuit in wire harness between fuse and terminal 6 of computer.
Final result after choosing No

Replace fuse. Is operation normal?

Short circuit in wire harness between fuse and terminal 6 of computer.