Aura V6-3.5L (2007)
Cruise Control: Symptom Related Diagnostic Procedures
A Symptoms - Cruise Control
Symptoms - Cruise Control
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.
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. Refer to Testing for Intermittent Conditions and Poor Connections in
Diagnostic Aids. See: Testing and Inspection/Component Tests and General Diagnostics
Symptom List
Refer to Cruise Control Inoperative/Malfunctioning in order to diagnose the system.
Cruise Control Inoperative/Malfunctioning
Cruise Control Inoperative/Malfunctioning
Diagnostic Instructions
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Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. See: Testing and Inspection/Initial Inspection and
Diagnostic Overview/Diagnostic System Check - Vehicle
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Review Strategy Based Diagnosis for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions provide an overview of each diagnostic category.
Circuit/System Description
The cruise control switch is an input to body control module (BCM). The BCM monitors the cruise control on/off, set/coast, resume/accelerate, and
cancel switch signal circuits in order to detect when a cruise control function switch has been activated. The BCM detects a predetermined voltage signal
when a cruise control function switch is applied, with each switch having a different voltage value.
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 or brakes is not applied.
Circuit/System Verification
1. 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/Cruise switch
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+ Resume/accelerate switch
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Cancel switch
2. Inspect for proper operation of the stop lamps.
