Suzuki 2006 SX4, Service Manual

Page: 917 / 1478

Air Conditioning System: Automatic Type 7B-52
)
B1521
Blower Speed
Selector
Malfunction
16 1
Signal voltage of blower speed selector in HVAC
control module is higher than specification.
Flashed
16 2
Signal voltage of blower speed selector in HVAC
control module is lower than specification.
Flashed
)
B1522
Air Flow Selector
Malfunction
17 1
Signal voltage of airflow selector in HVAC control
module is higher than specification.
Flashed
17 2
Signal voltage of airflow selector in HVAC control
module is lower than specification.
Flashed
) B1541
Back-up Power
Supply Circuit
Malfunction
14 1
• Back-up power supply voltage of HVAC control
module is higher than or lower than
specification.
• When connect battery with vehicle and then,
turn ignition switch to ON position for first time.
—
) B1546
A/C Refrigerant
Pressure
Malfunction
13 5
• Signal voltage of outside air temperature sensor
is more than specified value. However, A/C
refrigerant pressure is less than specified value.
• Insufficient refrigerant in A/C system.
—
) B1551
Serial
Communication
Circuit
Malfunction
9 1
Circuit voltage of serial communication circuit is
higher than specification.
Flashed
9 2
Circuit voltage of serial communication circuit is
lower than specification.
Flashed
) B1552
HVAC Control
Module Check
Sum Error
9 4
HVAC control module received unspecified data
from BCM more than 8 times.
Flashed
) B1553
CAN
Communication
Circuit
Malfunction
10 4
HVAC control module received signal indicating
reception error from ECM.
Flashed
) B1557
VSS Signal
Failure
11 4
HVAC control module receives invalid data of VSS
signal from BCM.
—
) B1561
ECT signal
Failure
5 4
HVAC control module receives invalid data of ECT
signal from BCM.
Flashed
) B1562
Outside
Temperature
Sensor Signal
Failure
1 4
HVAC control module receives invalid data of
outside air temperature sensor signal from BCM.
Flashed
) B1563
A/C Refrigerant
Pressure Sensor
Signal Failure
13 4
HVAC control module receives invalid data of A/C
refrigerant pressure sensor signal from BCM.
—
) B1570
Engine Type
Signal Failure
20 4
HVAC control module receives invalid data of
engine type signal from BCM.
—
) B1571
Combination
Meter Spec
Signal Failure
21 4
HVAC control module receives invalid data of
combination meter spec signal from BCM.
—
NO CODE Normal See NOTE below — —
DTC No.
(displayed
on SUZUKI
scan tool)
Detection item
DTC (indicated on
HVAC control
module)
Condition when trouble detected (DTC is
determined when following condition detected)
“A/C”
indicator
light
Indicated
by “REC”
indicator
light
Indicated
by “FRE”
indicator
light