outside air temperature SUZUKI SWIFT 2008 2.G Service Workshop Manual
[x] Cancel search | Manufacturer: SUZUKI, Model Year: 2008, Model line: SWIFT, Model: SUZUKI SWIFT 2008 2.GPages: 1496, PDF Size: 34.44 MB
Page 469 of 1496

Downloaded from www.Manualslib.com manuals search engine Wheels and Tires:  2D-2
Lower than recommended pressure can cause:
• Tire squeal on turns
• Hard Steering
• Rapid and uneven wear on the edges of the tread
• Tire rim bruises and rupture
• Tire cord breakage
• High tire temperature
• Reduced handling
• High fuel consumption
Replacement Tires
When replacement is necessary, the original equipment 
type tire should be used. Refer to the Tire Placard. 
Replacement tires should be of the same size, load 
range and construction as those originally on the vehicle. 
Use of any other size or type tire may affect ride, 
handling, speedometer / odometer calibration, vehicle 
ground clearance and tire or snow chain clearance to the 
body and chassis.
It is recommended that new tires be installed in pairs on 
the same axle. If necessary to replace only one tire, it 
should be paired with the tire  having the most tread, to 
equalize braking traction.
WARNING! 
Do not mix different types of tires on the 
same vehicle such as radial, bias and bias-
belted tires except in emergencies, because 
handling may be seriously affected and may 
result in loss of control.
 
The metric term for tire infl ation pressure is the kilo 
pascal (kPa). Tire pressures is usually printed in both 
kPa and kgf/cm
2 on the “Tire Placard”.
Metric tire gauges are available from tool suppliers.
The chart, shown the table, converts commonly used 
inflation pressures  from kPa to kgf/cm
2 and psi.
Wheels DescriptionS7RS0B2401002
Wheel Maintenance
Wheel repairs that use welding, heating, or peening are 
not approved. All damaged wheels should be replaced.
Replacement Wheels
Wheels must be replaced if they are bent, dented, have 
excessive lateral or radial runout, air leak through welds, 
have elongated bolt holes, if  lug wheel bolts won’t stay 
tight, or if they are heavily rusted. Wheels with greater 
runout than shown in the following may cause 
objectional vibrations.
Replacement wheels must be equivalent to the original 
equipment wheels in load capacity, diameter, rim with 
offset and mounting configuration. A wheel of improper 
size or type may affect wheel and bearing life, brake 
cooling, speedometer / odometer calibration, vehicle 
ground clearance and tire clearance to body and 
chassis.
How to Measure Wheel Runout
To measure the wheel runout, it is necessary to use an 
accurate dial indicator. The tire may be on or off the 
wheel. The wheel should be  installed to the wheel 
balancer of the like for proper measurement.
Take measurements of both lateral runout “a” and radial 
runout “b” at both inside an d outside of the rim flange. 
With the dial indicator set  in place securely, turn the 
wheel one full revolution slowly and record every reading 
of the indicator.
When the measured runout  exceeds the specification 
and correction by the balancer adjustment is impossible, 
replace the wheel. If the reading is affected by welding, 
paint or scratch, it should be ignored.
Lateral runout limit “a”
: 0.3 mm (0.012 in.)
Radial runout limit “b”
: 0.3 mm (0.012 in.)
kPa kgf/cm2psi
Conversion: 1 psi = 
6.895 kPa 1 kgf/cm
2 = 
98.066 kPa 160 1.6 23
180 1.8 26
200 2.0 29
220 2.2 32
240 2.4 35
260 2.6 38
280 2.8 41
300 3.0 44
I4RS0A240001-01  
Page 934 of 1496

Downloaded from www.Manualslib.com manuals search engine 7-ii Table of Contents
Recommended Service Material ....................... 7B-33
Special Tool ...................................................... 7B-33
Automatic Type .................... .................................7B-34
Precautions.........................................................7B-34 A/C System Caution .......................................... 7B-34
Precautions in Diagnosing Trouble ................... 7B-34
Precautions on Servicing A/C System .............. 7B-34
General Description .......... .................................7B-34
Auto A/C System Descript ion ............................ 7B-34
HVAC Control Module Operation Description ... 7B-36
Refrigerant Type Identifica tion .......................... 7B-36
Sub-Cool A/C System Description .................... 7B-36
A/C Operation Description ................................ 7B-36
On-Board Diagnostic System Description ......... 7B-37
Schematic and Routing Diagram ......................7B-37 Major Components of A/C System .................... 7B-37
A/C System Wiring Diagra m ............................. 7B-38
Diagnostic Information and Procedures ..........7B-39 A/C System Symptom Diagnosis ...................... 7B-39
Abnormal Noise Sympto m Diagnosis of A/C 
System ............................................................ 7B-42
DTC Check........................................................ 7B-42
DTC Clearance ................................................. 7B-43
DTC Table ......................................................... 7B-44
Fail-Safe Table ................. ................................. 7B-45
Scan Tool Data ................................................. 7B-46
Air Conditioning System Check......................... 7B-47
Visual Inspection ............................................... 7B-49
DTC B1502: Inside Air Temperature Sensor  and/or Its Circuit Malfunction .......................... 7B-49
DTC B1503: A/C Evaporator Air Temperature  Sensor and/or Its Circuit Malfunction .............. 7B-50
DTC B1504: Sunload Sensor and/or Its  Circuit Malfunction ......... ................................. 7B-52
DTC B1511: Temperature Control Actuator  (Position Sensor) and/or Its Circuit 
Malfunction ...................................................... 7B-53
DTC B1512: Air flow Control Actuator  (Position Sensor) and/or Its Circuit 
Malfunction ...................................................... 7B-55
DTC B1513: Temperature Control Actuator  and/or Its Circuit Malfunction .......................... 7B-57
DTC B1514: Air Flow Co ntrol Actuator and/or 
Its Circuit Malfunction ...................................... 7B-60
DTC B1541: HVAC Control Module Back-Up  Power Supply Malfunction .............................. 7B-62
DTC B1546: A/C Refrigerant Pressure  Malfunction ...................................................... 7B-63
DTC B1551: Serial Communication Circuit  Malfunction ...................................................... 7B-63
DTC B1552: Serial Communication Signal  Malfunction ...................................................... 7B-64
DTC B1553: CAN Communication Signal  Malfunction ...................................................... 7B-65
DTC B1557: Vehicle Speed Sensor Signal  Malfunction ...................................................... 7B-65
DTC B1561: Engine Coolant Temperature  Sensor Signal Malfunctio n .............................. 7B-66 DTC B1562: Outside Air Temperature Sensor 
Signal Malfunction ........................................... 7B-66
DTC B1563: A/C Refr igerant Pressure 
Sensor Signal Malfunction .............................. 7B-66
Inspection of HVAC Control Module and Its  Circuit .............................................................. 7B-67
A/C System Performance Inspection ................ 7B-70
A/C System Inspection at ECM ......................... 7B-70
Repair Instructions ............ ................................7B-71
Operation Procedure for Refrigerant Charge .... 7B-71
HVAC Unit Components ................................... 7B-72
HVAC Unit Removal and In stallation ................ 7B-73
Temperature Control Actuator Removal and  Installation ....................................................... 7B-73
Temperature Control Actuat or Inspection ......... 7B-73
Air Flow Control Actuator Removal and  Installation ....................................................... 7B-74
Air Flow Control Actuator Inspection ................. 7B-74
Air Intake Control Actuator Removal and  Installation ....................................................... 7B-75
Air Intake Control Actuator Inspection............... 7B-75
Actuator Linkage Inspection .............................. 7B-76
Blower Motor Controller Removal and  Installation ....................................................... 7B-76
Blower Motor Controller Inspection ................... 7B-76
HVAC Control Module Removal and  Installation ....................................................... 7B-77
Sunload Sensor Removal and Installation ........ 7B-77
Sunload Sensor Inspection ............................... 7B-77
Outside Air Temperature Sensor Removal  and Installation ................................................ 7B-77
Outside Air Temperature Sensor Inspection ..... 7B-77
Inside Air Temperature Sensor Removal and  Installation ....................................................... 7B-78
Inside Air Temperature Sens or Inspection ........ 7B-78
Condenser Assembly On-Vehicle Inspection .... 7B-78
Condenser Assembly Removal and  Installation ....................................................... 7B-78
Receiver/Dryer Removal and Installation .......... 7B-78
Evaporator Inspection ....................................... 7B-78
Evaporator Temperature Sensor Removal  and Installation ................................................ 7B-78
Evaporator Temperature Se nsor Inspection ..... 7B-78
Expansion Valve Removal an d Installation ....... 7B-78
Expansion Valve Inspection .............................. 7B-78
A/C Refrigerant Pressure Sensor and Its  Circuit Inspection............................................. 7B-78
A/C Refrigerant Pressu re Sensor Removal 
and Installation ................................................ 7B-78
Compressor Relay Inspection .
 .......................... 7B-78
Compressor Drive Belt Inspection and  Adjustment ...................................................... 7B-78
Compressor Drive Belt Removal and  Installation ....................................................... 7B-79
Compressor Assembly Removal and  Installation ....................................................... 7B-79
Compressor Assembly Components................. 7B-79
Magnet Clutch Removal and Installation........... 7B-79
Magnet Clutch Inspection.................................. 7B-79
Relief Valve Inspection...................................... 7B-79  
Page 949 of 1496

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Manual Type 7B-1
HVAC
Air Conditioning System
Manual Type
Precautions
A/C System CautionS7RS0B7210001
CAUTION! 
• The air conditioning system of this vehicle uses refrigerant HFC-134a (R-134a).
None of refrigerant, compressor oil and component parts is interchangeable between two types of 
A/C: one using refrigerant HFC-134a (R-134a) and the other using refrigerant CFC-12 (R-12).
Be sure to check which refrigerant is used be fore any service work including inspection and 
maintenance. For identification between these two types, refer to “Refrigerant Type Identification”.
When replenishing or changing refrigerant and comp ressor oil and when replacing parts, make sure 
that the material or the part to be used is appropriate to the A/C installed in the vehicle being 
serviced.
Use of incorrect one will result in  leakage of refrigerant, damage in parts or other faulty condition.
• When servicing the compressor, keep dirt or foreign material away from getting on or into the  compressor parts and system. Clean tools and a clean work area are important for proper service.
The compressor connection and the outside of the compressor should be cleaned before any “On 
vehicle” repair or before removal of the compressor. The parts must be kept clean at all times and 
any parts to be reassembled should be cleaned with trichloromethane, naphtha, kerosene or 
equivalent solvent and dried with dry air. Use only lint free cloths to wipe parts.
• When compressor is removed from the vehicle for  servicing, the oil remaining in the compressor 
should be discarded and new refrigerant oil added to the compressor.
Minor repair procedures may be done on the vehicle without discharging the system. Major repair 
procedures require that the system be discharged of refrigerant.
 
Precautions on Servicing A/C SystemS7RS0B7210002
WARNING! 
Should refrigerant HFC-134a (R-134a) is exposed  to your eye(s), consult a doctor immediately.
• Do not use your hand to rub affected eye(s). Instead, use fresh cold water to splash it over affected  area to thus gradually raise its temperature above the freezing point.
• Obtain proper treatment as soon as possible from a doctor or eye specialist. Should liquid  refrigerant HFC-134a (R-134a) is exposed to your skin, such affected part should be treated in the 
same manner as when skin  is frostbitten or frozen.
 
Handling Refrigerant HFC-134a (R-134a)
• Always wear goggles to protect your eyes.
• Avoid direct contact to liquid refrigerant.
• Do not heat refrigerant container higher than 40  °C (104 ° F).
• Do not discharge refrigerant into atmosphere.
• Do not expose bright metals to liquid refrigerant. Refrig erant combined with moisture is corrosive and tarnishes 
surfaces of bright metals including chrome.  
Page 982 of 1496

Downloaded from www.Manualslib.com manuals search engine 7B-34 Air Conditioning System: Automatic Type
Automatic Type
Precautions
A/C System CautionS7RS0B7220001
Refer to “A/C System Caution”.
Precautions in Diagnosing TroubleS7RS0B7220002
• Do not disconnect couplers from HVAC control module, battery cable from battery, HVAC control module ground 
wire harness from body or main fuse before confirming diagnostic information (diagnostic trouble code) stored in 
HVAC control module memory.
• Diagnostic information (diagnostic trouble code) stored in  HVAC control module can be checked by display of HVAC 
control module. Also, it can be checked by using SU ZUKI scan tool. Before checking diagnostic information 
(diagnostic trouble code), read this manual and operator's manual for SUZUKI scan tool to know how to read 
diagnostic information (diagnostic trouble code).
• When trouble is diagnosed using diagnostic information  (diagnostic trouble code) on display of HVAC control 
module, keep in your mind that each diagnostic inform ation (diagnostic trouble code) has priority, and only 
diagnostic information (diagnostic troub le code) which has the highest priority is indicated. Therefore, after 
troubleshooting the malfunction, make  sure if there exists any other diagnostic information (diagnostic trouble 
code).
• Be sure to read “Precautions for Electrical Circuit Service in Section 00” before inspection.
Precautions on Servicing A/C SystemS7RS0B7220003
Refer to “Precautions on  Servicing A/C System”.
General Description
Auto A/C System DescriptionS7RS0B7221001
The automatic type air conditioning system (auto A/C) is pr ovided with the function to automatically control the inside 
air temperature, fan speed, air flow outl et direction and air intake position by HVAC control module in addition to 
functions of the manual type air conditioning system (manua l A/C). Once the inside air temperature is set using the 
temperature selector, HVAC control module automatically controls  the inside air temperature at the constant level at all 
times based on the inside air temperature, outside ai r temperature, amount of sunlight and engine coolant 
temperature detected respectively by the inside air te mperature sensor, outside air temperature sensor, sunload 
sensor and ECT sensor. At this time, “FULL AUTO A/ C” appears on the display of HVAC control module.
With the air intake selector pushed in the above state, it is possible to select any position of the air intake actuator.
Then, “FULL AUTO A/C” on the display changes to “AUTO A/C”.  
Page 983 of 1496

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-35
Electronic Control System Location
NOTE
The figure shows left-hand steering vehicle. For right-hand steering vehicle, parts with (*) are installed 
at the opposite side.
 
1
2
3 * 4 *
5
6 *
7 *
8 *
9 *
10 *
21
11
12 13
14
15161718
19
20
I5RS0C722001-01
1. ECT sensor
7. Blower motor13. AUTO switch19. MODE (air flow) selector
2. Outside air temperature sensor 8. Blower motor controller 14. Temperature selector 20. Blower speed selector
3. Sunload sensor 9. Temperature control actuator15. OFF switch21. HVAC control module
4. Air flow control actuator 10. Inside air temperature sensor 16. Air intake selector
5. Evaporator temperature sensor 11. Defroster switch 17. A/C switch
6. Air intake actuator 12. Display 18. Rear defogger switch  
Page 984 of 1496

Downloaded from www.Manualslib.com manuals search engine 7B-36 Air Conditioning System: Automatic Type
Auto A/C Electronic Control Input / Output Table
HVAC Control Module Operation DescriptionS7RS0B7221002
Temperature Control
HVAC control module calculates the target temperature 
control door position based on signals from the 
temperature selector, inside air temperature sensor, 
outside air temperature sensor and sunload sensor and 
controls the temperature control actuator so that the 
current position of the temperature control door matches 
its target position.
Fan Speed Control
HVAC control module calculates the target blower fan 
speed based on signals from the temperature selector, 
inside air temperature sensor, outside air temperature 
sensor and sunload sensor, compares it with the current 
blower fan speed inputted from the blower motor 
controller to control the current blower fan speed to the 
target level.
Air Flow Outlet Control
HVAC control module calculates the target temperature 
control door position based on signals from the 
temperature selector, inside air temperature sensor, 
outside air temperature sensor and sunload sensor. 
Using thus obtained target temperature control door 
position, it further calculates  the target air flow control 
door position and controls the ai r flow control actuator so 
that the current air flow c ontrol door position becomes 
the target position. Air Intake Position Control
HVAC control module determines the position of the air 
intake control door based on signals from the 
temperature selector, inside air temperature sensor, 
outside air temperature sensor and sunload sensor and 
selects any of the following positions by controlling the 
position of the air intake control door.
• FRESH position (FRE)
• RECIRCULATION position (REC)
• MIX position (MIX)
Refrigerant Type IdentificationS7RS0B7221003
Refer to “Refrigerant Type Identification”.
Sub-Cool A/C System DescriptionS7RS0B7221005
Refer to “Sub-Cool A/C System Description”.
A/C Operation DescriptionS7RS0B7221006
Refer to “A/C Operation Description”.
Sunload sensor
Outside air temperature sensor Evaporator temperature sensor
A/C refrigerant pressure sensor
Temperature selector
MODE (air flow) selector
Blower speed selector
Air intake selector
AUTO switch
A/C switch
Compressor
Blower motor controller
Temperature control actuator
Air flow control actuator
Air intake control actuator
BCM
ECM
Data link connector
HVAC control module
CPU
ECT sensor
Inside air temperature sensor
VSS
*
I5RS0C722002-02
*: CAN communication  
Page 985 of 1496

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-37
On-Board Diagnostic System DescriptionS7RS0B7221007
NOTE
The diagnostic information as diagnostic 
trouble code (DTC) can be known by using 
SUZUKI scan tool. For further details, refer to 
“DTC Check”.
 
HVAC control module detect s malfunctions, which may 
occur in the following area.
• Outside air temperature sensor
• Inside air temperature sensor
• Evaporator temperature sensor
• Sunload sensor
• ECT sensor
• Temperature control actuator of HVAC unit
• Air flow control actuator of HVAC unit
• A/C refrigerant pressure sensor • HVAC control module
• VSS
• Serial Communication line
• CAN communication line
When HVAC control module detects malfunction, the 
“AUTO” indicator lamp (1) flashes to warn and the 
diagnostic trouble code (DTC) is stored in the memory of 
the module. When diagnosing trouble, the DTC can be 
checked according to “DTC Check”.
Schematic and Routing Diagram
Major Components of A/C SystemS7RS0B7222001
Refer to “Major Components of A/C System”.
1
I5RS0A722003-01  
Page 986 of 1496

Downloaded from www.Manualslib.com manuals search engine 7B-38 Air Conditioning System: Automatic Type
A/C System Wiring DiagramS7RS0B7222002
6
13
15
1610
11
12 9
12V
5V
5V5V
12V
12V
5V 5V
5V +BB
PNK/BLK
WHT/BLK
GRYBLK
WHT/BLU
WHT YEL
ORN
BRN/WHT
BRN/YEL
GRY/BLU
GRY/RED
PNK
YEL/BLK
BLK/ORN
PPL/WHT
12V BLK/YEL
WHT
ORN
ORN
ORN
5V
BLK/RED
BRN
RED/BLK
5V
5VGRY/REDRED
ORN
BLU/WHT
14
YEL/REDYEL/BLK
GRN/WHT
12V
YEL
L+
H+
L
H
WHTGRYBLK/RED
REDWHTREDWHT
M
M
WHT/RED
5
BLU
YEL
WHT
WHT/BLU
RED/BLKWHT
RED/YEL
BLU/YEL
LT GRN
GRN
BLU/RED
G52-6
G52-4 
G52-2
G52-5
G51-1
G51-2
G52-14
G51-3
G51-4
G52-1
G52-13
G52-3
G51-19
G51-7
G51-18
G51-10
G51-20
G51-5
G52-11
G51-9
G51-8
G51-12
G51-11
G52-16
5V
12V
5V
12V
LT GRNORN
5V
23
1
2
3 4
8
17
18 19
20
21
22
24
25
26
27
28
29
30
36 35 34 33 32 31 37
38 3938
41 40
42
43
44
MRED/BLK
GRN/RED
G52-8G51-15
G51-17G51-16
REDGRN
BLK/YEL
BLK/WHT
M7
I7RS0A722001-01
1. Main fuse box 12. Temperature control actuator 23. HVAC control module 34. Defroster switch
2. Ignition switch 13. Inside air temperature sensor 24. BCM 35. AUTO switch
3. Individual circuit fuse box No.1 box 14. Outside air temper ature sensor 25. A/C refrigerant pressure sensor 36. OFF switch  
Page 993 of 1496

Downloaded from www.Manualslib.com manuals search engine Air Conditioning System: Automatic Type 7B-45
NOTE
When no current DTC is detected, all contents displayed on display (1) of HVAC control module and 
defroster indicator (2) flash at the same time.
 
Fail-Safe TableS7RS0B7224006
When any of the following malfunctions (DTCs) is detected, fail-safe mode is activated.
However, when HVAC control module detects normal ope ration of A/C system, fail-safe mode is cancelled.
 )
 B1562 14 18 18 Outside air temperatur e sensor signal malfunction Flashed
 )  B1563 d4 20 19 A/C refrigerant pressure sensor signal malfunction —
— See NOTE 
below 
(current  DTC) ——Normal —
00 (history  DTC)
DTC No. 
(displayed  on 
SUZUKI 
scan tool) DTC 
(indicated  on 
display of  HVAC 
control 
module) Priority of 
display 
(current  DTC) Priority 
of 
display 
(history  DTC) Diagnosis
“AUTO” 
indicator  lamp
1
2
I5RS0A722009-01
DTC No.
Trouble Area Fail-Safe Operation
 )
B1502 Inside air temperature sensor and/
or its circuit HVAC control module controls actu
ators assuming that inside air 
temperature is 25 ° C (77 °F).
 )
B1503 A/C evaporator temperature sensor 
and its circuit • HVAC control module turn
s off A/C switch signal.
• HVAC control module controls actu ators assuming that evaporator 
temperature is 0 ° C (32 °F).
 )
B1504 Sunload sensor and/or its circuit HVAC control module controls actu
ators assuming that amount of 
sunlight is 0 W/m
2.
 ) B1551 Serial communication circuit
HVAC control module controls actuators assuming that outside air 
temperature is 20 ° C (68 °F), engine coolant temperature is 80  °C 
(176  °F), and vehicle speed is 40 km/h (25 mph).
 )
B1552 Serial communication circuit
 )
B1553 CAN communication circuit
 )
B1557 Vehicle speed sensor and/or its 
circuit HVAC control module controls act
uators assuming that vehicle speed 
is 40 km/h (25 mph).
 )
B1561 Engine coolant temperature sensor 
and/or its circuit HVAC control module controls act
uators assuming that engine coolant 
temperature is 80 ° C (176 °F).
 )
B1562 Outside air temperature sensor 
and/or its circuit HVAC control module controls actu
ators assuming that outside air 
temperature is 20 ° C (68 °F).  
Page 994 of 1496

Downloaded from www.Manualslib.com manuals search engine 7B-46 Air Conditioning System: Automatic Type
Scan Tool DataS7RS0B7224007
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 ma de by checking with these data alone.
Scan Tool Data Condition Normal Condition / Reference 
Va l u e
 )  TEMP CONT 
SWITCH Each reference value is relative to the position of 
temperature selector of HVAC control module. Max Cool, 18.5 
°C (65 ° F), 19 °C (66 
° C) – 31  °C (88  °F), 31.5  °C (89  °F), 
Max Hot
 )  CABIN 
TEMPERATURE Reference value is relative to in-car temperature. –6.5 
°C – 57.25 ° C 
(20.3  °F – 135.05  °F)
 )  OUTSIDE AIR TEMP Reference value is relative to outside air 
temperature. –23.3 
°C – 65.95  °C 
(–9.94  °F – 150.71  °F)
 )  EVAPORATOR 
TEMP Reference value is relative to temperature of 
evaporator. –29.7 
°C – 59.55  °C 
(–21.46  °F – 139.19  °F)
 )  COOLANT TEMP At specified id le speed after warming up. 80 °C – 100  °C (176 ° F – 212 ° F)
 )  SUN LOAD Reference value depends on the situation. 0 W/m
2 – 4447.8 W/m2
 )MODE CONT 
SWITCH Each reference value is relative to the position of air 
flow selector of HVAC control module.
AUTO, FACE, B/L, FOOT, D/F, DER
 )  FAN CONT SWITCH Each reference value is relative to the position of 
blower speed selector of HVAC control module. AUTO, OFF, 1st, 2nd – 7th, 8th
 )  FAN DESIRED VOLT Reference value is relative to the position of blower 
speed selector of HVAC control module. 0 – 16.0 V
 )  AIR MIX POS SEN Reference value is relative to the position of 
temperature selector of HVAC control module. about 2.0 V (Max Hot)
about 4.0 V (Max Cool)
 ) MODE POS SENSOR Reference value is relative to the position of air flow 
selector of HVAC control module. about 1.6 V (DEF)
about 4.0 V (VENT)
 )  A/C CONT SIG A/C system is ON. ON
A/C system is OFF. OFF
 )  BLOWER LOAD SIG Position of blower speed selector is 1st position or 
more.
ON
Position of blower speed selector is OFF position. OFF
 )  AIR INTAKE MODE Fresh air (FRE) mode is activated. FRE
Recirculation air (REC) mode is activated. REC
AUTO mode is activated. AUTO
 )  REFRIGERANT 
PRESSURE Engine running. A/C ON (A/C is operating) 
at ambient temperature: 
30 
°C (86  °F) 1470 – 1770 kPa For more details, 
refer to pressure  of high pressure 
gauge under “A/C System  Performance Inspection”
A/C OFF (A/C is not 
operating) at ambient 
temperature: 30  °C (86 
° F) and engine coolant 
temperature: 90  ° – 100 
° C 600 – 1000 kPa After longer than 10 
min from A/C switch turned off
 )  A/C COMP CLUTCH Engine running. A/C switch and blower 
motor switch turned ON
ON
A/C switch and/or blower 
motor switch turned OFF OFF
 )  DFR INDICATOR Defroster indicator 
lamp is lighted. ON
Defroster indicator la mp is not lighted. OFF
 )  VEHICLE SPEED At stop. OFF
0 km/h (0 mph)