Shutters/dampers

[Platinum White]

What are the operating parameters for the shutters behind the girl?l 2.0L Titanium

 

 

[WWWPerfA_ZN0W]

Don't have specifics, but this is what the FSM provides:

 

Active Grille Shutter System

The active grille shutter system (when equipped) is comprised of the grille shutter assembly and the grille shutter actuator. The active grille shutter system is primarily used to maximize fuel economy by reducing aerodynamic drag on the vehicle. In addition, the system is used to control coolant temperature, HVAC system performance and exhaust emissions depending on the vehicle speed. The system is also used to shorten engine warm-up time, increasing engine efficiency and providing heat to the vehicle occupants in a timely manner.

PCM inputs/outputs used for controlling the active grille shutter system are the:

• Engine Coolant Temperature (ECT) sensor
• Intake Air Temperature (IAT) sensor
• A/C pressure transducer
• Accelerator Pedal Position (APP) sensor
• ABS module, messages sent over the High Speed Controller Area Network (HS-CAN)
• Engine cooling fan motor
• Engine oil temperature

Grille Shutters

The grille shutters are several "slats" or "blinds" connected to one another by a linkage system. One of the individual grille shutters is fixed to the grille shutter actuator. When the grille shutter actuator moves, it moves the attached shutter which causes the other linked shutters to move. The individual grille shutters are not available for service separately, they are serviced with the grille shutter assembly.

Grille Shutter Actuator

The grille shutter actuator is a smart motor which receives position requests from the PCM via a Local Interconnect Network (LIN). One of the grille shutter blinds connects to the grille shutter actuator using a retainer. The grille shutter actuator can be serviced individually or as an entire assembly, which includes the grille shutters, grille shutter actuator, retainer and grille shutter housing. The grille shutter actuator positions the grille shutters based on commands received from the PCM. The full range of movement of the grille shutter actuator is a total of 90 degrees from fully closed to fully open. The actuator moves the grille shutters to 1 of 16 positions (approximately 6 degrees between positions) when requested by the PCM.

 

Principles of Operation

When the engine is turned off, the grille shutter actuator moves the grille shutters to the full open position. When the engine is started, a calibration of the grille shutter system occurs, which typically takes 15-20 seconds. The grille shutter system performs the calibration sequence by moving the actuator and shutters through their full 90 degree sweep to detect the end positions (open/close). The calibration sequence can begin in either direction, open or closed, and continues until it is successful or a fault is detected. It is possible for a long pause to occur between the 2 portions (open/close) of the calibration sequence. Calibration of the grille shutter system cannot be manually requested, it only occurs as determined by the grille shutter actuator. If certain faults are present (such as shutter blocked or actuator error) a recalibration is initiated in an attempt to resolve the concern. If the concern is not resolved after 3-4 attempts, a DTC is set in the PCM. Other faults also trigger a recalibration request, but not until a grille shutter DTC is set in the PCM.

 

The Local Interconnect Network (LIN) supports bi-directional communication between the grille shutter actuator and PCM, allowing the grille shutter actuator to communicate position and fault information to the PCM. The PCM reports grille shutter system DTCs after the fault information is communicated by the grille shutter actuator for a predetermined amount of time. Any failures of the LIN for over 10 seconds continuously, results in the grille shutter actuator moving the grille shutters to the full open position. There is no indication to the driver that a fault with the grille shutter system is present or that a grille shutter system DTC is set in the PCM.