Suzuki 2006 SX4 Service Manual page 990

7B-50 Air Conditioning System: Automatic Type
Not Using SUZUKI Scan Tool
NOTE
In case of malfunction of temperature
selector, blower speed selector and air flow
selector, DTC can not be checked by the
following procedure. Use SUZUKI scan tool
for DTC check.
1) Light over sunload sensor vertically with an
incandescent light of approximately 100 W apart
from about 100 mm (3.94 in.).
NOTE
If sunload sensor is not lighted over with an
incandescent light, DTC of sunload sensor is
detected as current DTC even though there is
not any malfunction.
2) Set the following selectors to specified positions
below respectively with ignition switch off position.
• Temperature selector (1) is maximum cool
position
• Blower speed selector (2) is OFF position
• Air flow selector (3) is AUTO position
3) While pressing A/C switch (4) and air intake selector
(5) simultaneously, turn ignition switch to ON
position.
4) Wait for about 5 seconds (start of diagnosis).
5) Read flashing pattern of "FRE" (6) and "REC" (7)
indicator lights which represents DTC and write it
down.
NOTE
• When 2 or more current DTCs are
detected, only DTC having the highest
priority is indicated. Therefore, after
troubleshooting the malfunction, DTC
check has to be performed again to see if
any other DTC(s) is detected.
• Pressing "A/C" switch alternates display
of current DTC and history DTC. "A/C"
indicator light (8) remains off when display
is in current DTC mode and it lights up
when display is in history DTC mode.
• When a history DTC is indicated while 2 or
more history DTCs are detected, it is
possible to have other history DTC(s)
stored in HVAC control module displayed
by pressing the air intake selector.
1 2
4
5
8
6
Example: When inside air temperature sensor
circuit malfunction (Open) is set
[B] [A]
[A]: "REC" indicator light
[B]: "FRE" indicator light
H: ON
Example: When VSS signal failure (Data error) is
[B] [A]
[A]: "REC" indicator light
[B]: "FRE" indicator light
H: ON
L: OFF
6) After completing above check, turn ignition switch to
"OFF" position.
3
7
I5RW0A722005-01
[A]
H
L
b
a
[B]
H
L
a
I5RW0A722006-02
L: OFF
a. About 0.5 seconds
b. About 2 seconds
set
[A]
H
L
c
b
a
[B]
H
L
a a a a
I5RW0A722025-01
a. About 0.5 seconds
b. About 3 seconds
c. About 1.5 seconds