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Home >> Buick >> 1989 >> Reatta >> Repair and Diagnosis >> Engine Performance >> System >> 3.8L BCM Tests W/Codes >> Self-Diagnostics >> Code B671, Cruise Servo Position Sensor Circuit >> Note On Intermittents
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Note On Intermittents

If an intermittent Code B671 is being set, manipulate related wiring while observing BD70 display. If failure is induced, reading will jump from its normal value to a reading less than 3 percent.

Fig 1: Code B671, Flow Chart Cruise Servo Position Sensor Circuit
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