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COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
ACTIVE GRILLE SHUTTER SYSTEM
ACTIVE GRILLE SHUTTER SYSTEM : Component Parts LocationINFOID:0000000012432157
For the engine related component parts, refer to EC-14, "ENGINE CONTROL SYSTEM :
ComponentPartsLocation".
ACTIVE GRILLE SHUTTER SYSTEM : Active grille shutterINFOID:0000000012432158
Active grille shutter is located at front bumper lower opening, and
according to the signal from ECM it operates actuator to perform
open/close movement of flap to control the amount of air flow
taken into engine compartment.
JSKIA3360ZZ
No.Component Reference
Active grille shutter EXT-10, "
ACTIVE GRILLE SHUTTER SYSTEM : Active grille
shutter"
JSBIA3648ZZ
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SYSTEMEXT-11
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SYSTEM
ACTIVE GRILLE SHUTTER SYSTEM
ACTIVE GRILLE SHUTTER SYSTEM : System DiagramINFOID:0000000012432159
ACTIVE GRILLE SHUTTER SYSTEM : System DescriptionINFOID:0000000012432160
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 resu lt, 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-d iagnosis function. When it detects malfunction, transmits
diagnosis signal to ECM and ECM records active grille shutter malfunction.
BASIC MOVEMENTS
• S1: 30 km/h (19 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 vehicl e 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 igni-
tion switch is turned ON and the vehicle reaches the specified speed for the first time. At the end of initial posi-
tion leaning ECM operates shutter to open position. (The in itial position learning is performed every time when
ignition switch is turned OFF → ON.)
While driving, after the initial position learning ends, EC M operates the active grille shutter to close position
when the operational conditions of active grille shutter are met.
JSKIA3359GB
ALKIA3661GB
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< SYSTEM DESCRIPTION >
SYSTEM
While driving at high speed, ECM operates the shutter to open position when the vehicle reaches the specified
speed in order to prevent the shutte r from shutting up by wind resistance.
When the vehicle speed is reduced below the specified speed ECM operates active grille shutter to open posi-
tion.
ACTIVE GRILLE SHUTTER OPERATIONAL CONDITIONS
ECM operates active grille shutter to close position when following a ll conditions are met.
ECM operates active grille shutter to open positi on when one of the following conditions is 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
ItemStatus
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
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ACTIVE GRILLE SHUTTEREXT-13
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WIRING DIAGRAM
ACTIVE GRILLE SHUTTER
Wiring DiagramINFOID:0000000012432161
AAKWA0932GB
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< WIRING DIAGRAM >
ACTIVE GRILLE SHUTTER
ABKIA7095GB
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ACTIVE GRILLE SHUTTER
ABKIA7097GB
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SQUEAK AND RATTLE TROUBLE DIAGNOSESEXT-17
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SYMPTOM DIAGNOSIS
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Work FlowINFOID:0000000012432162
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist when the noise occurs. Use the Diag-
nostic Worksheet during the interv iew to document the facts and conditions when the noise occurs and any
customer's comments; refer to EXT-21, "
Diagnostic Worksheet". This information is necessary to duplicate the
conditions that exist when the noise occurs.
• The customer may not be able to provide a detailed descr iption or the location of the noise. Attempt to obtain
all the facts and conditions that exist when the noise occurs (or does not occur).
• If there is more than one noise in the vehicle, be sure to diagnose and repair the noise that the customer is
concerned about. This can be accomplished by test driving the vehicle with the customer.
• After identifying the type of noise, isolate the noise in terms of its characteristics. The noise characteristics are provided so the customer, service adviser and technician are all speaking the same language when
defining the noise.
• Squeak —(Like tennis shoes on a clean floor) Squeak characteristics include the light contact/fast movement/brought on by road conditions/hard surfaces
= higher pitch noise/softer surfaces = lower pitch noises/edge to surface = chirping.
• Creak—(Like walking on an old wooden floor) Creak characteristics include firm contact/slow mo vement/twisting with a rotational movement/pitch depen-
dent on materials/often brought on by activity.
• Rattle—(Like shaking a baby rattle) Rattle characteristics include the fast repeated contac t/vibration or similar movement/loose parts/missing
clip or fastener/incorrect clearance.
• Knock —(Like a knock on a door) Knock characteristics include hollow sounding/someti mes repeating/often brought on by driver action.
• Tick—(Like a clock second hand) Tick characteristics include gentle contacting of li ght materials/loose components/can be caused by driver
action or road conditions.
• Thump—(Heavy, muffled knock noise)
Thump characteristics include softer k nock/dead sound often brought on by activity.
• Buzz—(Like a bumble bee) Buzz characteristics include high frequency rattle/firm contact.
• Often the degree of acceptable noise level will vary depending upon the person. A noise that you may judge as acceptable may be very irritating to the customer.
• Weather conditions, especially humidity and temperature, may have a great effect on noise level.
DUPLICATE THE NOISE AND TEST DRIVE
SBT842
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