Heated/Cooled Seat Schematics ()
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Heated Seats Description and Operation (KA1) ()Heated Seats Description and Operation (KA6) ()
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* 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)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
B2508 02
1. Ignition OFF, disconnect the X1 harness connector at the HSM.
2. Test for infinite resistance between the control circuit terminal 3 and ground.
锟斤拷 If not the specified value, test the control circuits listed below for a short to ground:
* Driver seat cushion and back element terminal 3
* Driver seat cushion element terminal 5
* Driver seat back element terminal 1
3. Test for infinite resistance between the control circuit terminal 6 and ground.
锟斤拷 If not the specified value, test the control circuits listed below for a short to ground:
* Passenger seat cushion and back element terminal 6
* Passenger seat cushion element terminal 2
* Passenger seat back element terminal 4
4. If all circuits test normal, replace the HSM.
B2508 01
1. Ignition OFF, disconnect the X1 harness connector at the HSM.
2. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal 3 and ground.
锟斤拷 If the test lamp illuminates, test the control circuits listed below for a short to voltage:
* Driver seat cushion and back element terminal 3
* Driver seat cushion element terminal 5
* Driver seat back element terminal 1
3. Verify that a test lamp does not illuminate between the control circuit terminal 6 and ground.
锟斤拷 If the test lamp illuminates, test the control circuits listed below for a short to voltage:
* Passenger seat cushion and back element terminal 6
* Passenger seat cushion element terminal 2
* Passenger seat back element terminal 4
4. If all circuits test normal, replace the HSM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Driver or Passenger Seat Back Cushion Heater Replacement (Escalade with HP2) ()Driver or Passenger Seat Back Cushion Heater
