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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 G — back door / engine hood courtesy switch circuit
Step-by-step TSRM procedure

Theft deterrent G — back door / engine hood courtesy switch circuit

Follow the theft deterrent system flowchart from BE-94.

BE-94
Current check

Is there continuity between terminal 1 and ground with back door opened

Is there continuity between terminal 1 and ground with back door opened?
Yes

OK

Continue to next check.
No

Open circuit in back door courtesy switch circuit.

Open circuit in back door courtesy switch circuit.