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HAC-204
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FUNCTION INFORMATION
FUNCTION DIAGNOSIS
FUNCTION INFORMATION
Component Part LocationINFOID:0000000001548103
ENGINE COMPARTMENT
PASSENGER COMPARTMENT
1. A/C Compressor F3 2. Refrigerant pressure sensor E17 3. Ambient sensor E60
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FUNCTION INFORMATION
HAC-205
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1. Variable blower control M90, M91 2. Intake door motor M89 3. Air mix door motor M88
4. In-vehicle sensor M93 5. Intake sensor M92 6. Mode door motor M87
7. Sunload sensor M94 8. Front blower motor M62 9. Front air control M85, M86
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HAC-206
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
REFRIGERATION SYSTEM
REFRIGERATION SYSTEM
Refrigerant CycleINFOID:0000000001547310
Refer to HA-16, "Refrigerant Cycle".
Refrigerant System ProtectionINFOID:0000000001547311
Refer to HA-16, "Refrigerant System Protection".
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AUTOMATIC AIR CONDITIONER SYSTEM
HAC-207
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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AUTOMATIC AIR CONDITIONER SYSTEM
Control System DiagramINFOID:0000000001547312
CONTROL SYSTEM
The control system consists of input sensors, switches, the front air control (microcomputer) and outputs.
The relationships of these components is shown in the diagram below:
Control System DescriptionINFOID:0000000001547313
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1. Mode control dial 2. Rear window defogger switch 3. A/C switch
4. Intake switch 5. Blower control dial 6. Temperature control dial
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Page 3541 of 5883
![NISSAN TIIDA 2007 Service Repair Manual HAC-208
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
AUTOMATIC AIR CONDITIONER SYSTEM
MODE CONTROL DIAL
Controls the air discharge outlets.
Positions the air outlet doors to the defrost posit NISSAN TIIDA 2007 Service Repair Manual HAC-208
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
AUTOMATIC AIR CONDITIONER SYSTEM
MODE CONTROL DIAL
Controls the air discharge outlets.
Positions the air outlet doors to the defrost posit](/manual-img/5/57395/w960_57395-3540.png)
HAC-208
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
AUTOMATIC AIR CONDITIONER SYSTEM
MODE CONTROL DIAL
Controls the air discharge outlets.
Positions the air outlet doors to the defrost position. Also positions the intake doors to the outside air position.
When shifting mode control dial to DEF under the following conditions, compressor is turned ON. (A/C LED
ON)
BLOWER: ON
A/C: OFF
TEMPERATURE CONTROL DIAL (POTENTIO TEMPERATURE CONTROL)
Increase or decrease the set temperature.
BLOWER CONTROL DIAL
Automatically or manually control the blower speed. Seven speeds are available for manual control.
Shifting blower control dial to AUTO, compressor is turned ON automatically.
REAR WINDOW DEFOGGER SWITCH
When illumination is ON, rear window is defogged.
A/C SWITCH
The compressor is ON or OFF.
(Pressing the A/C switch when the blower control dial is ON will turn off the A/C switch and compressor.)
INTAKE SWITCH
When intake switch is ON, REC indicator turns ON, and air inlet is fixed to REC.
When press intake switch again, FRE indicator turns ON, and air inlet is fixed to FRE.
When DEF position or FRE indicator is turned ON, or when compressor is turned from ON to OFF, REC
switch is automatically turned OFF (fixed to FRE mode).
REC mode can be re-entered by pressing intake switch again. (Except DEF position)
MAGNET CLUTCH CONTROL
When mode control dial and blower control dial is turned to AUTO position, AUTO switch or DEF switch is
pressed, front air control inputs compressor ON signal to BCM.
BCM sends compressor ON signal to ECM, via CAN communication line.
ECM judges whether compressor can be turned ON, based on each sensor status (refrigerant-pressure sen-
sor signal, throttle angle, etc.). If it judges compressor can be turned ON, it sends compressor ON signal to
IPDM E/R, via CAN communication line.
Upon receipt of compressor ON signal from ECM, IPDM E/R turns air conditioner relay ON to operate com-
pressor.
Discharge Air FlowINFOID:0000000001547314
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AUTOMATIC AIR CONDITIONER SYSTEM
HAC-209
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Switches And Their Control FunctionINFOID:0000000001547316
SWITCHES AND THEIR CONTROL FUNCTION
Mode door positionAir outlet/distribution
Vent Foot Defroster
100% — —
56% 44% —
16% 64% 20%
16% 53% 31%
17% — 83%
Airflow always present at driver and passenger side demisters
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HAC-210
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
AUTOMATIC AIR CONDITIONER SYSTEM
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Page 3544 of 5883
CAN COMMUNICATION SYSTEM
HAC-211
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CAN COMMUNICATION SYSTEM
System DescriptionINFOID:0000000001547318
Refer to LAN-13, "System Description".