Lucerne V6-3.8L (2007)
Cruise Control: Symptom Related Diagnostic Procedures
Cruise Control Inoperative/Malfunctioning
Cruise Control Inoperative/Malfunctioning
Diagnostic Aids
In order to avoid misdiagnosis, inspect for the following:
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Ensure that the following cruise control switches are not stuck in the engaged position:
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On/Off switch
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Set/Coast switch
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Resume/Accel switch
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Proper operation of the brake lamps - Refer to Exterior Lighting Systems Description and Operation.
For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections in Diagnostic Aids. See: Testing and
Inspection/Component Tests and General Diagnostics
Conditions for Enabling Cruise Control
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The vehicle speed is greater than 40 km/h (25 mph).
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The vehicle is not in PARK, REVERSE, NEUTRAL, or 1st gear.
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The system voltage is within 9-16 volts.
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The park brake is not applied.
Test Description
