B671

Chart:

Schematic:

DESCRIPTION
Code B671 will set if the ignition is on and the servo position sensor signal is below 2%. During the time the failure is present the cruise control will be disengaged.

TEST DESCRIPTION
The numbers below refer to circled numbers on the diagnostic chart:
1. Body Control Module (BCM) data value BD70 displays servo position. The normal range is above 2%.
2. Check to see if fault is due to short or open in the feedback circuits.
3. Checks to see if open circuit reading is due to servo or circuits.

NOTE ON INTERMITTENTS
If an intermittent Code B671 is setting, manipulate related wiring while observing BCM data BD70. If the failure is induced, the reading will jump from its normal value to a reading below 2%.