HHR L4-2.4L (2010)
the HVAC control module.
3. Install a test lamp between the control circuit terminal 1 and the B+. Verify the heated seat low heat indicator is illuminated.
‹› If the indicator does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the HVAC control module.
4. If all circuits test normal, replace the HSM.
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.
*
Driver or Passenger Seat Back Cushion Heater Replacement (See: Service and Repair/Driver or Passenger Seat Back Cushion Heater
Replacement)
*
Front Seat Heater Element Replacement (See: Service and Repair/Front Seat Heater Element Replacement)
*
Programming and Relearning (See: Testing and Inspection/Programming and Relearning) for HVAC control module and HSM replacement,
setup, and programming
