Infiniti QX56 (Z62). Manual — part 1103
DESCRIPTION
SCS-49
< SYSTEM DESCRIPTION >
[AIR LEVELIZER CONTROL SYSTEM]
C
D
F
G
H
I
J
K
L
M
A
B
SCS
N
O
P
SYSTEM DESCRIPTION
DESCRIPTION
Description
INFOID:0000000006256039
• Corrects sinkage of vehicle rear that occurs in laden or towing conditions.
• Maintains vehicle height at a constant level and improves riding comfort by charging or discharging air in air
chamber of rear shock absorber, according to signal from vehicle height sensor installed to rear suspension.
SCS-50
< SYSTEM DESCRIPTION >
[AIR LEVELIZER CONTROL SYSTEM]
COMPONENT PARTS
COMPONENT PARTS
Component Parts Location
INFOID:0000000006256040
Component Description
INFOID:0000000006256041
1.
Combination meter
Refer to
.
2.
CK SUSP indicator lamp
3.
Air levelizer control module
4.
Air compressor relay
5.
Air chamber
6.
Air compressor
7.
Vehicle height sensor
A.
Inside of luggage side finisher low-
er (LH)
B.
Engine room (RH)
C.
Rear shock absorber
D.
Vehicle rear (LH)
JSEIA0223GB
Component parts
Reference
Air levelizer control module
SCS-51, "Air Levelizer Control Module"
Vehicle height sensor
SCS-51, "Vehicle Height Sensor"
Air compressor
Exhaust solenoid
COMPONENT PARTS
SCS-51
< SYSTEM DESCRIPTION >
[AIR LEVELIZER CONTROL SYSTEM]
C
D
F
G
H
I
J
K
L
M
A
B
SCS
N
O
P
Air Levelizer Control Module
INFOID:0000000006256042
• Operates ON/OFF of air compressor (exhaust solenoid), according to signal from vehicle height sensor.
• Transmits CK SUSP indicator lamp signal to the combination meter via CAN communication, when setting of
standard vehicle height is incomplete.
• If malfunction is detected, the system enters fail-safe mode. Refer to
.
Vehicle Height Sensor
INFOID:0000000006256043
Measures vehicle height of vehicle rear and transmits this information to air levelizer control module according
to electric signal.
Air Compressor
INFOID:0000000006256044
Operates according to signal from air levelizer control module via air compressor relay, and charges air in air
chamber of rear shock absorber.
EXHAUST SOLENOID
Operates according to signal from air levelizer control module, and discharges air in air chamber of rear shock
absorber.
Air Compressor Relay
INFOID:0000000006256045
Turns ON according to signal from air levelizer control module, and operates air compressor.
CK SUSP Indicator Lamp
INFOID:0000000006256046
• Turns ON for 2 seconds when ignition switch is turned ON, for the purpose of bulb check.
• Turns ON when setting of standard vehicle height is incomplete.
NOTE:
Does not turn ON when the system is malfunctioning.
Air compressor relay
SCS-51, "Air Compressor Relay"
CK SUSP indicator lamp
SCS-51, "CK SUSP Indicator Lamp"
Component parts
Reference
SCS-52
< SYSTEM DESCRIPTION >
[AIR LEVELIZER CONTROL SYSTEM]
STRUCTURE AND OPERATION
STRUCTURE AND OPERATION
Rear Shock Absorber
INFOID:0000000006256047
• Discharges air in air chamber (2) from air valve (1) when vehicle height of vehicle rear is higher than stan-
dard vehicle height, has shock absorber stroke in compressed direction, lowers vehicle height, and returns it
to standard vehicle height.
• Also charges air in air chamber from air valve when height of vehicle rear is lower than standard vehicle
height, has shock absorber stroke in extending direction, raises vehicle height, and returns it to standard
vehicle height.
• Charged air, because of rubber (3) that is hard and located on side surface, does not expand in lateral direc-
tion, but expands in vertical direction, and enables shock absorber to extend or retract.
Without Hydraulic Body-Motion Control System
With Hydraulic Body-Motion Control System
JSEIA0217ZZ
1.
Air valve
2.
Air chamber
3.
Rubber
A.
Stroke
:
Vehicle upper
JSEIA0218ZZ
1.
Air valve
2.
Air chamber
3.
Rubber
A.
Stroke
:
Vehicle upper
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