Inspection Of Drl Controller And Its Circuits (If Equipped) - Suzuki SX4 Service Manual

9B-14 Lighting Systems:

Inspection of DRL Controller and Its Circuits (If Equipped)

1) Confirm that lighting switch is in good condition referring to "Headlight Switch (in Lighting Switch) Inspection".
2) Confirm that oil pressure switch is in good condition referring to "Oil Pressure Switch Inspection in Section 9C".
3) Remove glove box.
4) Remove DRL controller (1) from steering support member.
5) Connect connector to DRL controller.
6) Check that the voltage between the following terminals and vehicle body ground are specifications under each
condition.
7) Check that voltage between the following terminals and body ground are as specification under each condition.
If measuring voltage is not within specification, check applicable circuit for open or short. If circuits are normal,
replace DRL controller.
If measuring voltage is within specification, DRL controller and its circuits are good condition.
[A]: DRL controller connector viewed from harness side
Terminal Circuit
1 To clearance lamp
2 To ignition switch
To lighting switch
3
(CLEARANCE)
4 Ground
5 Ground
6 To head lamp
7 To oil pressure switch
8 Main fuse
9 To lighting switch (HEAD)
1
1
Specification
0 – 1 V
10 – 14 V
0 – 1 V
10 – 14 V
0 – 1 V
10 – 14 V
0 – 1 V
0 – 1 V
0 – 1 V
10 – 14 V
8 – 10 V
0 – 1 V
10 – 14 V
6 – 8 V
0 – 1 V
[A]
Condition
Engine is at stop and lighting switch is at OFF position.
Engine is at running and lighting switch is at OFF position.
Ignition switch is at OFF position.
Ignition switch is at ON position.
Lighting switch is at OFF position.
Lighting switch is at CLEARANCE position or HEAD
position.
• Lighting switch is at HEAD position and dimmer switch
is at LOW position.
• Engine is running and lighting switch is at OFF position.
Lighting switch is at HEAD position and dimmer switch is
at HI position.
Engine is at running (Oil pressure warning lamp is turned
OFF).
Engine is at stop.
• Engine is at running and lighting switch is at OFF
position.
• Engine is running and lighting switch is CLEARANCE
position.
• Engine is at running and dimmer switch is at HEAD
position.
• Engine is at stop.
S7RW0A9204018
5 4 3 2 1
10 9 8 7 6
V
I5RW0A920003-01
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