Colorado 4WD V8-5.3L (2010)
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 voltage is supplied at all times to the heated seat module from the HTD/SEATS 20A fuse located in the underhood fuse block. Ignition voltage is
supplied to the lumbar adjuster switch through the PWR HTR SWITCH 10A fuse also located in the underhood fuse block. When the heated seat switch
is in either the HI or LO heat position, ignition voltage is applied through one of the internal resistors of the switch and the switch signal circuit to the
heated seat module. In response to this signal, the heated seat module applies battery voltage through the heater element control circuit to the seat
cushion and seat back heater elements for heated seat operation.
Diagnostic Aids
The heated seat switch is a component of the seat lumbar adjuster switch. In various places in the diagnostics the lumbar adjuster switch will be called
out.
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/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
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Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Connector
Repairs/Connector Repairs)
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Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
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Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
