Heated/Cooled Seats Inoperative
HEATED/COOLED SEATS INOPERATIVEDIAGNOSTIC AIDS
The following conditions must be met in order to perform valid tests when diagnosing the climate control seat (CCS) system:
- The ignition must be cycled OFF then ON between each test in order to reset the climate control seat module (CCSM).
- The engine must be running in order to supply the CCSM with the amount of current needed to operate the heated/cool seat system.
With a short to ground in the heated/cool ventilation module COOL control circuit, the system will operate normally in the HEAT mode. However, when the COOL mode is selected, the short will open the HTDST fuse and the system will become inoperative.
With a short to ground in the heated/cool ventilation module HEAT control circuit, the system will operate normally in the COOL mode. However, when the HEAT mode is selected, the short will open HTDST fuse and the system will become inoperative.
TEST DESCRIPTION
Steps 1-5:
Steps 6-8:
Steps 9-14:
Steps 15-19:
Steps 20-22:
Steps 23-26:
Steps 27-32:
Steps 33-38:
Steps 39-44:
Steps 45-51:
Steps 52-55:
The numbers below refer to the step numbers on the diagnostic table.
9. This step determines if the climate control seat module turns ON by using the current state of the blower motors. While performing this test, pay close attention to the blower motors because they may operate at a low RPM and for a short period of time. Listen for a low audible noise or feel for light air from the exhaust ducts of both blower motors.
10. This step determines the operation of the blower motors. While performing this test, pay close attention to the blower motors because they may operate at a low RPM and for a short period of time. Listen for a low audible noise or feel for light air from the exhaust ducts of both blower motors.