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Home >> Buick >> 1989 >> Reatta >> Repair and Diagnosis >> Engine Performance >> System >> 3.8L BCM Tests W/Codes >> Self-Diagnostics >> Code B672, Cruise Vent Solenoid Circuit Problem >> Note On Intermittents
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Note On Intermittents

If an intermittent Code B672 is being set, manipulate related wiring while in BO01 display and listen for solenoid to cycle (or stop cycling). This will have to be done slowly as this function cycles the solenoid on and off every 3 seconds. Ensure intermittent condition can be induced a few times during the on (or "HI") output interval.

Fig 1: Code B672, Flow Chart Cruise Vent Solenoid Circuit Problem
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