Descriptions for Clips
Replace any clips which are damaged during removal or installation.
Scheme 1
Scheme 2
Scheme 3
Scheme 4
Scheme 5
| No. | Component | Reference |
|---|---|---|
| (1) | Active grille shutter | " ACTIVE GRILLE SHUTTER SYSTEM: ACTIVE GRILLE SHUTTER " |
For the engine related component parts, refer to " ENGINE CONTROL SYSTEM: COMPONENT PARTS LOCATION ".
ACTIVE GRILLE SHUTTER SYSTEM: System Description
While driving, the active grille shutter system closes shutter to reduce air flow to engine compartment for the purpose of reducing aerodynamic drag, and as a result, improves the vehicle's fuel efficiency.
ECM controls active grille shutter system by detecting vehicle status through respective modules and sensors. Active grille shutter actuator is equipped with self-diagnosis function. When it detects malfunction, transmits diagnosis signal to ECM and ECM records active grille shutter malfunction.
Scheme 6
- S1: 6 km/h (4 MPH)
- S2: Approx. 30 - 140 km/h (19 - 88 MPH)
- *1: Shutter initial position learning.
- *2: Judgement of high vehicle speed.
- *3: Judgement of low vehicle speed.
DESCRIPTION OF MOVEMENTS
Active grille shutter is fully open when the vehicle stops or the ignition switch is turned OFF.
ECM operates the shutter to close position in order to perform shutter's initial position learning when the ignition switch is turned ON and the vehicle reaches the specified speed for the first time. At the end of initial position leaning ECM operates shutter to open position. (The initial position learning is performed every time when ignition switch is turned OFF --> ON.)
While driving, after the initial position learning ends, ECM operates the active grille shutter to close position when the operational conditions of active grille shutter are met.
While driving at high speed, ECM operates the shutter to open position when the vehicle reaches the specified speed in order to prevent the shutter from shutting up by wind resistance.
When the vehicle speed is reduced below the specified speed ECM operates active grille shutter to open position.
ACTIVE GRILLE SHUTTER OPERATIONAL CONDITIONS
ECM operates active grille shutter to close position when following all conditions are met.
| Item | Status |
|---|---|
| Active grille shutter initial position learning | Complete |
| Vehicle speed | Approx. 30 - 140 km/h (19 - 88 MPH) |
| Engine coolant temperature | Approx. less than 95°C (203 °F) |
| Engine oil temperature | Approx. less than 140°C (284°F) |
| CVT fluid temperature | Approx. less than 135°C (275°F) |
| Cooling fan | OFF |
| Refrigerant pressure | 0.78 MPa (7.95 kg/cm 2 , 113.1 psi) or less |
| Malfunction of engine coolant temperature sensor system | Not detected |
| Malfunction of engine oil temperature sensor system | Not detected |
| Malfunction of vehicle speed sensor system | Not detected |
| Malfunction of CAN communication system | Not detected |
ECM operates active grille shutter to open position when one of the following conditions is met.
| Item | Status |
|---|---|
| Vehicle speed | 22 km/h (14 MPH) or less 140 km/h (88 MPH) or more |
| Engine coolant temperature | Approx. 95°C (203 °F) or more |
| Engine oil temperature | Approx. 140°C (284°F) or more |
| CVT fluid temperature | Approx. 135°C (275°F) or more |
| Cooling fan | ON |
| Refrigerant pressure | 1.18 MPa (12.04 kg/cm 2 , 171.1 psi) or more |
| Malfunction of engine coolant temperature sensor system | Detected |
| Malfunction of engine oil temperature sensor system | Detected |
| Malfunction of vehicle speed sensor system | Detected |
| Malfunction of CAN communication system | Detected |
