Temperature Delta Fault
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
During the heating or cooling modes, if the CCSM detects a temperature difference between the seat cushion and seat back TED temperature sensors exceeding the delta temperature listed below for more than 4 seconds, the system will enter the Temperature Delta Fault state. At which time the CCSM will set the TED voltage duty cycle to 0%, set the blower speed control to maximum voltage to blow ambient air over the TEDs, attempting to reduce the delta temperature to less than 68°F. The system will operate in this mode for 30 seconds. If the delta temperature fault still exists after 30 seconds, the system will transition to the FAULT state and remain there until the ignition has been set to OFF.
- Delta between the seat cushion and seat back temperature sensors is 104°F (40°C).
- This fault state is disabled in the back only mode.