Scan Tool Data - Suzuki Liana RH413 Service Manual

Fail-Safe Table
When any of the following malfunctions (DTCs) is detected, fail-safe mode is activated.
However, when HVAC control module detects normal operation of A/C system, fail-safe mode is canceled.
DTC
Trouble Area
No.
Outside air temperature sensor
B1501 and/or its circuit
Inside air temperature sensor and/
B1502 or its circuit
A/C evaporator temperature
B1503 sensor
Sunload sensor and/or its circuit
B1504
Water temperature sensor and/or
B1510 its circuit
Temperature control actuator
B1511 (position sensor) and/or its circuit
Air flow control actuator (position
B1512 sensor) and/or its circuit
Temperature control actuator and/
B1513 or its circuit
Air flow control actuator and/or its
B1514 circuit
Temperature selector and/or its
B1520 circuit
Blower speed selector and/or its
B1521 circuit
Air flow selector and/or its circuit
B1522
NOTE
In case that all of temperature selector, blower speed selector, and air flow selector are abnormal, the
operation of air conditioning system stops.

Scan Tool Data

As the data values given in the following are standard values estimated on the basis of values obtained from the
normally operation vehicles by using a scan tool, use them as reference values. Even when the vehicles are in good
condition, there may be cases where the checked values do not fall within each specifies data range. Therefore,
judgement as abnormal should not be made by checking with these data alone.
Scan Tool Data
TEMP CONT SWITCH
CABIN TEMPERATURE
OUTSIDE AIR TEMP
EVAPORATOR TEMP
COOLANT TEMP
SUNLOAD
MODE CONT SWITCH
FAN CONT SWITCH
Detection of malfunction when
ignition switch is turned ON
The operation of actuator stops.
Condition
Each reference value is relative to the position of
temperature selector of HVAC control module.
Reference value is relative to in-car temperature.
Reference value is relative to outside air
temperature.
Reference value is relative to temperature of
evaporator.
At specified idle speed after warming up.
Reference value depends on the situation.
Each reference value is relative to the position of
air flow selector of HVAC control module.
Each reference value is relative to the position of
blower speed selector of HVAC control module.
Air Conditioning System: Automatic Type 7B-50
Fail-Safe Operation
20 °C (68 °F)
25 °C (77 °F)
0 °C (32 °F)
175 W/m
80 °C (176 °F)
23 °C (73 °F)
1st
DEF
Normal Condition / Reference Value
Max Cool, 18 °C (64 °F), 18.5 °C (65
°F) – 27.5 °C (81.5 °F), 28 °C (82 °F),
AUTO, VENT, BI-LEVEL, FOOT, DEF-
S3RH0A7224006
Detection of malfunction during
ignition switch is ON
HVAC control module keeps
condition just before detection.
2
S3RH0A7224007
Max Hot
–6.5 °C – 57.25 °C
(20.3 °F – 135.05 °F)
–23.3 °C – 65.95 °C
(–9.94 °F – 150.71 °F)
–29.7 °C – 59.55 °C
(–21.46 °F – 139.19 °F)
1.3 °C – 90.55 °C
(34.34 °F – 194.99 °F)
0 W/m 2 – 4447.8 W/m
FOOT, DEF
AUTO, OFF, 1st, 2nd – 7th, 8th
2