G6 L4-2.4L VIN B (2006)
Cruise Control: Symptom Related Diagnostic Procedures
A Symptoms - Cruise Control
SYMPTOMS
IMPORTANT: The following steps must be completed before using the symptom tables.
1. Before using the symptom diagnostic table, perform the Diagnostic Trouble Code (DTC) List - Vehicle in order to verify the following conditions:
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There are no DTCs set.
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The module can communicate via the GM LAN. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Diagnostic Trouble Code Descriptions
2. Review the system operation in order to understand the system functions. Refer to Cruise Control Description and Operation (3.5L) Cruise Control
Description and Operation (2.4L and 3.9L).
Visual/Physical Inspection
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Inspect for aftermarket devices which can affect the operation of the cruise control system.
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Inspect the accessible system components or the visible system components for obvious damage or for obvious conditions which can cause the
symptom.
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions.
Symptom List
Refer to Cruise Control Inoperative/Malfunctioning in order to diagnose the system.
Cruise Control Inoperative/Malfunctioning
CRUISE CONTROL INOPERATIVE/MALFUNCTIONING
DIAGNOSTIC AIDS
CAUTION: Refer to SIR Caution in Service Precautions.
Disable the inflatable restraint steering wheel module when performing this diagnostic table. Refer to SIR Disabling and Enabling Zone 3 in Restraint
Systems.
Perform the following to avoid misdiagnosis:
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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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Inspect for proper operation of the stop lamps.
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Rotate the steering wheel to both steering stops and activate each cruise control switch separately. With a scan tool, observe the Cruise Control
Switch parameter in the Body and Accessories, Cruise Control data list. This will help eliminate the possibility of a internally open or shorted
inflatable restraint steering wheel module coil.
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Electromagnetic interference (EMI) on the speed sensor signal circuit may cause erratic cruise control operation.
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For an intermittent condition,
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