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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (HVAC System - Automatic) >> Description and Operation >> Air Temperature Description and Operation >> Auxiliary HVAC Control Module

Auxiliary HVAC Control Module

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

The auxiliary HVAC control module is a GMLAN device that interfaces between the operator, the front HVAC control module and the Aux. HVAC system to maintain air temperature and air distribution settings. Battery voltage, ground and LED dimming are supplied to the Aux. HVAC control module. The front HVAC control module monitors the position of the rear air temperature actuator and the rear mode actuator. The front HVAC module will move the actuators to the proper position when it receives a request from the Aux. HVAC control module on which position to place the actuator. The Aux. HVAC control module is powered ON or OFF through GMLAN communication by the vehicle power-mode.

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