Terrain FWD L4-2.4L (2010)
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
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the X4 harness connector at the K40 seat memory control module.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 5 and ground.
‹› If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
3. Ignition OFF, connect the X4 harness connector at the K40 seat memory control module.
4. Ignition ON, observe the scan tool Driver Seat Heating/Venting/Cooling Mode parameter while pressing the driver HEATED seat switch. The
reading should change between Off and Back & Cushion.
‹› If not the specified value, replace the A20 radio/HVAC controls.
5. Observe the scan tool Passenger Seat Heating/Venting/Cooling Mode parameter while pressing the passenger HEATED seat switch. The reading
should change between Off and Back & Cushion.
‹› If not the specified value, replace the A20 radio/HVAC controls.
6. If all scan tool parameter readings test normal, there are no DTCs set, and the driver and/or passenger heated seat is inoperative, replace the K40
seat memory control module.
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 (See: Accessories and Optional Equipment/Radio, Stereo, and Compact Disc/Radio/Stereo/Service and
Repair/Radio Control Assembly Replacement)
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Control Module References (See: Testing and Inspection/Programming and Relearning) for seat memory control module replacement, setup, and
programming
