CTS RWD V8-6.2L SC (2009)
between Inactive and Active.
‹› If not the specified value, replace the radio/HVAC control panel.
6. If the scan tool readings are normal, there are no DTCs set, and the driver and/or passenger heated seat is inoperative, replace the MSM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble
Code Tests and Associated Procedures/Verification Tests and Procedures) after completing the diagnostic procedure.
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Radio Control Assembly Replacement (with Navigation Display) (See: Accessories and Optional Equipment/Radio, Stereo, and Compact
Disc/Radio/Stereo/Service and Repair/Radio Control Assembly Replacement (with Navigation Display))Radio Control Assembly Replacement
(without Navigation Display) (See: Accessories and Optional Equipment/Radio, Stereo, and Compact Disc/Radio/Stereo/Service and
Repair/Radio Control Assembly Replacement (without Navigation Display))
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Control Module References (See: Testing and Inspection/Programming and Relearning) for MSM replacement, setup, and programming
Vented Seat Malfunction
Vented Seat Malfunction
Diagnostic Instructions
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Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
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Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
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Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure Instructions)
provides an overview of each diagnostic category.
Diagnostic Fault Information
Circuit/System Description
The driver and passenger vented seats are controlled by separate vented seat switches located in the radio/HVAC control panel. Ignition voltage is
supplied to the driver and passenger seat blower motors through the MISC IGN fuse located in the underhood fuse block. Ground for the driver seat
blower motors is provided at G200, while ground for the passenger seat blower motors is provided at G201. When a vented seat switch is pressed, a
