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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 B — inspection of ignition switch circuit
Step-by-step TSRM procedure

Theft deterrent B — inspection of ignition switch circuit

Follow the theft deterrent system flowchart from BE-89.

BE-89
Current check

Is CIG fuse normal

Is CIG fuse normal?
BE-89
Yes

OK

Continue to next check.
Choose Yes
No

Replace fuse. Is operation normal?

Short circuit in wire harness between fuse and terminal 4 of computer.
Choose No
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