Operation - Vented Seats

Vented Seat Switch 

• The vented seat switches located in the U-Connect Touch ™ screen module.
• When the vented seat switch is selected, a CAN-IHS message is delivered to the HSM to operate the vented seat system.
• The vented seats have two selectable speeds with a hidden intermediate speed.
• There are two selectable speeds for the vented motors. These speeds are selected by the driver and/or front passenger by pressing the vented seat switches, located in the U-Connect Touch™ screen module.

Heated Seat Module 

• The HSM provides the vented seat motors with a variable Pulse Width Modulated (PWM) signal used to control the brushless fan seat motors.
• The HSM supplies a PWM control circuit to the motors for varied fan output levels.
• The vented seat system will only operate when the vehicle engine is running (EngRPM > 400).
• The HSM will not activate the vented seat output if the heated seat output is active for the same seat.
• The HSM has the ability to control the front left and front right seat outputs individually.
• Auto On Feature  The Auto On feature is a customer configurable feature that when enabled will activate the driver vented seat on engine start based on ambient temperature. If Auto On feature is enabled, and the ambient temperature is at or above 27° C (80° F) the HSM will activate the driver vented seat in LOW mode. This feature also works when using remote start. During remote start operation, vented seat is ON in the HIGH mode. Once operator depresses ignition switch into RUN state, vented seat mode switches to LOW setting.

Vented Seat Motor 

• The vented seat motor located in the seat bottom pan or in the seat back frame cannot be adjusted or repaired and must be replaced if inoperative or damaged.

  Refer to MOTOR, VENTED SEAT, REMOVAL .

• When the HSM determines a vent output is shorted or fully open the HSM immediately turns the affected vented seat outputs off and matures the appropriate diagnostic trouble code (DTC). Refer to DIAGNOSTIC CODE INDEX .

The vented seat system is diagnosed using a scan tool. The individual front vented seat switches located in the U-Connect Touch ™ screen module cannot be adjusted or repaired. If a front vented seat switch or indicator is inoperative or damaged, the entire U-Connect Touch ™ screen module must be replaced.