Height Sensor And Its Circuit Inspection (If Equipped); Headlight Leveling Control Module Removal And Installation (If Equipped); Initialization Of Headlight Auto Leveling System - Suzuki SX4 Service Manual

Height Sensor and Its Circuit Inspection (If
Equipped)
1) Remove front or rear height sensor from vehicle
referring to "Height Sensor Removal and Installation
(If Equipped)".
2) Connect connector to height sensor.
3) Vary position of height sensor link (1) and measure
voltage between terminals of headlight leveling
control module (4) as described below.
• For front height sensor
Between "G14-20" and "G14-22" terminals of
headlight leveling control module.
• For rear height sensor
Between "G14-19" and "G14-21" terminals of
headlight leveling control module.
If check result is not as specified, perform
inspections of power supply, ground and signal
circuits of front or rear height sensor which is
described under "Inspection of Headlight Leveling
Control Module and Its Circuit (Headlight Auto
Leveling System)". If circuits are OK, replace
height sensor.
Height sensor output voltage
Full bound position (2): about 0.5 V
Full rebound position (3): about 4.5 V
[A] [B]
2
1
3
9 6
24 23 22 21 20 19 18
4
[A]: Front [B]: Rear
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2
3
1
G14
5 3 1
17 16 13 12 11 10
V
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Headlight Leveling Control Module Removal
and Installation (If Equipped)
Removal
1) Disconnect negative (–) cable at battery.
2) Remove glove box.
3) Disconnect connector (1) from headlight leveling
control module (2).
4) Remove headlight leveling control module with its
bracket from steering support member (3).
1
3
2
Installation
For installation, reverse removal procedure noting the
following.
• Connect connector securely.
• After replacing headlight leveling control module with
new one, initialize headlight auto leveling system
referring to "Initialization of Headlight Auto Leveling
System".

Initialization of Headlight Auto Leveling System

Initialization of the headlight auto leveling system is to
make the headlight leveling control module learn signals
which are fed from the height sensors when the vehicle
is at the standard height. Standard height means the
height of the vehicle with a driver but without load in it.
Initialization of the headlight auto leveling system is
required when any of the following works has been
performed.
• Replacement of headlight leveling control module
• Removal of front and/or rear height sensor link from
lower arm
• Removal of front and/or rear height sensor from
suspension frame
• Replacement of front and/or rear height sensor
Lighting Systems: 9B-31
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