G6 V6-3.9L (2009)
Seat Heater: Testing and Inspection
Heated Seat Inoperative
Heated Seat Inoperative
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
Battery positive voltage is supplied at all times to the heated seat module through the HTD SEAT fuse located in the rear fuse block. When commanded
ON, the heated seat module uses this voltage to heat the seat heating elements. Ignition voltage is supplied to the heated seat switch and the heated seat
module from the ROOF/HEAT SEAT fuse located in the BCM. The heated seat module and the seat heating elements are grounded through the module
ground circuit to G303.
Each time the heated seat switch is pressed, ignition voltage is applied through the heated seat signal circuit to the heated seat module. The module
counts these inputs to determine what level of heat the vehicle operator is commanding. In response to these switch signals, the heated seat module
applies battery voltage and ground through the seat heater element control circuits to the seat heating elements. When the desired seat temperature has
been reached, the module will open and close the supply voltage to the heater elements as necessary in order to maintain the seat temperature.
Reference Information
Schematic Reference
Heated/Cooled Seat Schematics (See: Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Heated Seats Description and Operation (See: Description and Operation)
Electrical Information Reference
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Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics)
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Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics)
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Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics)
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Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics)
Circuit/System Verification
Ignition ON, operate the heated seat switch to the high and low heat positions. The seat cushion and seat back should get warm and the appropriate
heated seat switch temperature indicators should illuminate.
