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Home >> Buick >> 1998 >> Century Custom >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Module >> Diagnostic Tests >> DTC B2739: Key-In-Ignition Fault >> Diagnostic Aids

Diagnostic Aids

The following conditions may cause an intermittent: Intermittent short to ground or open in circuit No. 80 (Light Green wire), intermittent open in circuit No. 1550 (Black wire), poor connections at BCM or ignition key alarm switch, internal short to voltage or open in BCM, or intermittent open in G203.