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Home >> Oldsmobile >> 1998 >> Intrigue GL >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Module >> Diagnostic Tests >> DTC B2739: Key In Ignition Fault >> Circuit Description

Circuit Description

BCM receives voltage from the IGN0 input (circuit No. 1500) and ground from ground connector G203 when ignition switch is turned to RUN position. Engine will start only when BCM recognizes the signal from the key in ignition and sees the correct resistor code from the ignition lock cylinder.

BCM will set DTC is it does not detect a ground in circuit No. 80 (Light Green wire) for longer than 0.3 second.