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Diagnostic codes
Searching in 1990 USDM TSRM.
Areas /Theft deterrent A — inspection of power source circuit
Step-by-step TSRM procedure

Theft deterrent A — inspection of power source circuit

Follow the theft deterrent system flowchart from BE-88.

BE-88
Current check

Check DOME fuse

Turn ignition switch off. Is DOME fuse normal?
BE-88
Yes

DOME fuse normal

Disconnect computer connector and inspect power source.
Choose Yes
No

Replace fuse

Replace fuse. Is operation normal?
Choose No
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