compressor NISSAN TIIDA 2007 Service Owners Manual

HAC-84
< PRECAUTION >[MANUAL AIR CONDITIONER]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001683796
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.
 Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
Precaution for Procedures Without Cowl Top CoverINFOID:0000000001203084
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Working with HFC-134a (R-134a)INFOID:0000000001203085
WARNING:
 CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. These refrigerants
must never be mixed, even in the smallest amounts. If the refrigerants are mixed a compressor mal-
function is likely to occur.
 Use only specified oil for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) components. If
oil other than that specified is used, compressor malfunction is likely to occur.
 The specified HFC-134a (R-134a) oil rapidly absorbs moisture from the atmosphere. The following
handling precautions must be observed:
- When removing refrigerant components from a vehicle, immediately cap (seal) the component to
minimize the entry of moisture from the atmosphere.
- When installing refrigerant components to a vehicle, do not remove the caps (unseal) until just
before connecting the components. Connect all refrigerant loop components as quickly as possible
to minimize the entry of moisture into system.
- Only use the specified oil from a sealed container. Immediately reseal containers of oil. Without
proper sealing, oil will become moisture saturated and should not be used.
- Avoid breathing A/C refrigerant and oil vapor or mist. Exposure may irritate eyes, nose and throat.
Use only approved recovery/recycling equipment to discharge HFC-134a (R-134a) refrigerant. If acci-
dental system discharge occurs, ventilate work area before resuming service. Additional health and
safety information may be obtained from refrigerant and oil manufacturers.
- Do not allow A/C oil to come in contact with styrofoam parts. Damage may result.
PIIB3706J

INSPECTION AND ADJUSTMENT
HAC-87
< BASIC INSPECTION >[AUTO AIR CONDITIONER (W/O NAVI)]
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INSPECTION AND ADJUSTMENT
Operational CheckINFOID:0000000001547386
The purpose of the operational check is to confirm that the system operates properly.
CHECKING MEMORY FUNCTION
1. Press temperature control switch (UP: ) until 32°C is displayed.
2. Press OFF switch.
3. Turn the ignition switch OFF.
4. Turn the ignition switch ON.
5. Press the AUTO switch.
6. Confirm that the set temperature remains at previous temperature.
7. Press OFF switch.
If NG, go to trouble diagnosis procedure for HAC-198, "
Memory Function Check".
If OK, continue the check.
CHECKING BLOWER
1. Press blower motor switch (UP: ). Blower should operate on low speed. The fan symbol should have one
blade lit.
2. Press blower motor switch (UP: ), and continue checking blower speed and fan symbol until all speeds
are checked.
3. Leave blower on max. speed.
If NG, go to trouble diagnosis procedure for HAC-120, "
Front Blower Motor Diagnosis Procedure".
If OK, continue the check.
CHECKING DISCHARGE AIR
1. Press MODE switch and DEF switch.
2. Each position indicator should change shape.
3. Confirm that discharge air comes out according to the air distribution table. Refer to HAC-94, "
Discharge
Air Flow".
Intake door position is checked in the next step.
If NG, go to trouble diagnosis procedure for HAC-109, "
Mode Door Motor Diagnosis Procedure".
If OK, continue the check.
NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at
FRESH when the DEF is selected.
CHECKING RECIRCULATION
1. Press recirculation (REC) switch one time. Recirculation LED should illuminate.
2. Press fresh (FRE) switch one time. Fresh LED should illuminate.
3. Listen for intake door position change (you should hear blower sound change slightly).
If NG, go to trouble diagnosis procedure for HAC-116, "
Intake Door Motor Diagnosis Procedure".
If OK, continue the check.
CHECKING TEMPERATURE INCREASE
1. Press temperature control switch (UP: ) until 32°C is displayed.
2. Check for hot air at discharge air outlets.
If NG, go to trouble diagnosis procedure for HAC-193, "
Component Function Check".
If OK, continue the check.
CHECKING TEMPERATURE DECREASE
1. Press temperature control switch (DOWN: ) until 18°C is displayed. Conditions : Engine running at usual operating temperature

HAC-88
< BASIC INSPECTION >[AUTO AIR CONDITIONER (W/O NAVI)]
INSPECTION AND ADJUSTMENT
2. Check for cold air at discharge air outlets.
If NG, go to trouble diagnosis procedure for HAC-185, "
Component Function Check".
If OK, continue the check.
CHECK A/C SWITCH
1. Press AUTO and A/C switches.
2. A/C switch LED will turn ON.
 Confirm that the compressor clutch engages (sound or visual inspection).
If NG, go to trouble diagnosis procedure for HAC-125, "
Magnet Clutch Diagnosis Procedure".
If OK, continue the check.
CHECKING AUTO MODE
1. Press AUTO switch.
2. Display should indicate AUTO.
 Confirm that discharge air and blower speed will depend on ambient, in-vehicle, and set temperatures.
 If NG, go to trouble diagnosis procedure for HAC-163, "
Front Air Control Power and Ground Diagnosis Pro-
cedure", then if necessary, trouble diagnosis procedure for HAC-125, "Magnet Clutch Diagnosis Procedure".
 If all operational checks are OK (symptom cannot be duplicated), go to Incident Simulation Tests in XX-XX,
"*****" and perform tests as outlined to simulate driving conditions environment.
 If symptom appears, refer to HAC-86, "
How to Perform Trouble Diagnosis For Quick And Accurate Repair"
and perform applicable trouble diagnosis procedures.

FUNCTION INFORMATION
HAC-89
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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FUNCTION DIAGNOSIS
FUNCTION INFORMATION
Component Part LocationINFOID:0000000001547388
ENGINE COMPARTMENT
PASSENGER COMPARTMENT
1. Compressor (magnet clutch) F3 2. Refrigerant pressure sensor E17 3. Ambient sensor E60
AWIIA0602ZZ

AUTOMATIC AIR CONDITIONER SYSTEM
HAC-93
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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DISPLAY
Displays the operational status of the system.
AUTO SWITCH
 The compressor, intake doors, air mix doors, outlet doors and blower speed are automatically controlled so
that the in-vehicle temperature will reach, and be maintained at the set temperature selected by the operator.
 When pressing AUTO switch, air inlet, air outlet, fan speed, and discharge air temperature are automatically
controlled. (Inlet is automatically controlled only when FRE or REC switch is OFF.)
TEMPERATURE CONTROL SWITCH (POTENTIO TEMPERATURE CONTROL)
Increases or decreases the set temperature.
RECIRCULATION (REC) SWITCH
 When REC switch is ON, REC switch indicator turns ON, air inlet is fixed to REC, and compressor will turn
ON.
 When FRE switch is turned ON, air outlet switches to D/F or DEF position, or when compressor is turned
from ON to OFF, REC switch is automatically turned OFF (fixed to FRE mode).
FRESH (FRE) SWITCH
 When FRE switch is ON, FRE switch indicator turns ON, and air inlet is fixed to FRE.
 When REC switch is turned ON, FRE switch is automatically turned OFF (fixed to REC mode). FRE mode
can be re-entered by pressing FRE switch again.
DEFROSTER (DEF) SWITCH
Positions the air outlet doors to the defrost position. Also positions the intake doors to the outside air position,
and compressor will turn ON.
REAR WINDOW DEFOGGER SWITCH
When illumination is ON, rear window is defogged.
OFF SWITCH
The compressor and blower are OFF, the intake doors are set to the outside air position, and the air outlet
doors are set to the foot position.
A/C SWITCH
The compressor is ON or OFF.
(Pressing the A/C switch when the A/C switch is ON will turn off the A/C switch and compressor.)
MODE SWITCH
Controls the air discharge outlets.
When air outlet switches to D/F position, compressor will turn ON and fixed to REC mode.
BLOWER MOTOR SWITCH
Manually control the blower speed. Four speeds are available for manual control (as shown on the display).
1. Blower motor switch 2. Defroster (DEF) switch 3. Rear window defogger switch
4. Display 5. A/C switch 6. OFF switch
7. Temperature control switch 8. AUTO switch 9. Recirculation (REC) switch
10. Fresh (FRE) switch 11. MODE switch

HAC-94
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
AUTOMATIC AIR CONDITIONER SYSTEM
MAGNET CLUTCH CONTROL
When A/C switch, 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:0000000001547394
AWIIA0277GB
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
WJIA2190E

HAC-100
< FUNCTION DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
SELF-DIAGNOSIS FUNCTION
7.STEP-4: OPERATION OF EACH DOOR MOTOR IS CHECKED
1. Press temperature control switch (UP: ).
2. Press (DEF) switch. Code No. of each door motor test is
indicated on the display.
>> GO TO 8.
8.CHECK ACTUATORS
Refer to HAC-94, "
Discharge Air Flow" and confirm discharge air flow, air temperature, blower motor voltage
and compressor operation.
Checks must be made visually, by listening to any noise, or by touching air outlets with your hand, etc. for
improper operation.
OK or NG
OK >> GO TO 9.
NG >>  Air outlet does not change.
Go to Mode Door Motor Circuit. Refer to HAC-109, "
Mode Door Motor Diagnosis Procedure".
 Intake door does not change.
Go to Intake Door Motor Circuit. Refer to HAC-116, "
Intake Door Motor Diagnosis Procedure".
 Blower motor operation is malfunctioning.
Go to Blower Motor Circuit. Refer to HAC-120, "
Front Blower Motor Diagnosis Procedure".
 Magnet clutch does not engage.
Go to Magnet Clutch Circuit. Refer to HAC-125, "
Magnet Clutch Diagnosis Procedure".
 Discharge air temperature does not change.
Go to Air Mix Door Motor Circuit. Refer to HAC-112, "
Air Mix Door Motor Diagnosis Procedure".
9.STEP-5: TEMPERATURE OF EACH SENSOR IS CHECKED
1. Press temperature control switch (UP: ).
2. Code No. 5 appears on the display.
>> GO TO 10.
10.CHECK AMBIENT SENSOR
RHA495A
Code No. 414243444546
Mode door position VENT B/L 1 B/L 2 FOOT D/F DEF
Intake door position REC REC 20% FRE 80% FRE FRE FRE
Air mix door position FULL COLD FULL COLD 50% 50% FULL HOT FULL HOT
Blower motor voltage 5V 10.5V 8.5V 8.5V 8.5V Battery voltage
Compressor ON ON ON OFF OFF ON
Blower motor ON signal 12V 12V 12V 1V 1V 12V

MODE DOOR MOTOR
HAC-107
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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P Drive System of Step Motor Type Door Motor
 Motor is actuated in sequence by energizing four drive coils.
 Rotation direction can be changed by changing pattern of excitation.
Mode Door Control Specification
COMPONENT DESCRIPTION
Mode Door Motor
The mode door motor is attached to the A/C unit assembly. It rotates
so that air is discharged from the outlet set by the front air control.
Motor rotation is conveyed to a link which activates the mode door.
Mode Door Motor Component Function CheckINFOID:0000000001569468
INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - DISCHARGE AIR
1. Press the MODE switch and DEF ( ) switch.
2. Each position indicator should change shape.
3. Confirm that discharge air comes out according to the air distribution table. Refer to HAC-94, "
Discharge
Air Flow".
NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at
FRESH ( ) when DEF ( ) is selected.
Can a symptom be duplicated?
SJIA0971E
AWIIA0291GB
SJIA0812E

HAC-124
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
MAGNET CLUTCH
MAGNET CLUTCH
System DescriptionINFOID:0000000001547430
SYSTEM DESCRIPTION
Front air control controls compressor operation by intake air temperature and signal from ECM.
Low Temperature Protection Control
Front air control will turn compressor ON or OFF as determined by a signal detected by intake sensor.
When intake air temperatures are higher than 3.5°C (38°F), the com-
pressor turns ON. The compressor turns OFF when intake air tem-
peratures are lower than 2°C (36°F).
Magnet Clutch Component Function CheckINFOID:0000000001569476
INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - A/C SWITCH
1. Press the AUTO switch and A/C switch.
2. The A/C switch indicator will illuminate. Confirm that the compressor clutch engages (sound or visual
inspection).
Can the symptom be duplicated?
YES >> GO TO 2.
NO >> Perform a complete operational check. Refer to HAC-87, "
Operational Check".
2.CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 3.
3.PERFORM SELF-DIAGNOSIS.
Perform the self-diagnosis function. Refer to HAC-98, "
Front Air Control Self-Diagnosis".
Are any self-diagnosis codes present?
YES >> Repair as necessary.
NO >> GO TO 4.
4. CHECK AMBIENT SENSOR CIRCUIT
Perform diagnostic procedure for the ambient sensor circuit. Refer to HAC-130, "
Ambient Sensor Diagnosis
Procedure".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair as necessary.
5. CHECK INTAKE SENSOR CIRCUIT
Perform diagnostic procedure for the intake sensor circuit. Refer to HAC-139, "
Intake Sensor Diagnosis Pro-
cedure".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair as necessary.
SJIA0802E

MAGNET CLUTCH
HAC-125
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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6. RECHECK FOR SYMPTOMS
Perform a complete operational check and check for any symptoms. Refer to HAC-87, "
Operational Check".
Does another symptom exist?
YES >> Repair as necessary.
NO >> Replace front air control. Refer to XX.
Magnet Clutch Diagnosis ProcedureINFOID:0000000001547432
DIAGNOSTIC PROCEDURE FOR MAGNET CLUTCH
SYMPTOM: Magnet clutch does not engage when A/C switch is ON.
1.CHECK INTAKE SENSOR CIRCUIT
Refer to HAC-139, "
Intake Sensor Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Malfunctioning intake sensor: Refer to XX.
2.PERFORM AUTO ACTIVE TEST
Refer to XX-XX, "*****"
.
Does the magnet clutch operate?
YES >>  WITH CONSULT-III
GO TO 6.
 WITHOUT CONSULT-III
GO TO 7.
NO >> GO TO 3.
3.CHECK POWER SUPPLY FOR MAGNET CLUTCH
1. Turn ignition switch OFF.
2. Disconnect compressor connector F3.
3. Start the engine.
4. Press AUTO switch and A/C switch ON.
5. Check voltage between compressor harness connector F3 ter-
minal 1 and ground.
AWIIA0304GB
Te r m i n a l s
Voltag e
(Approx.) (+) (−)
Connector Terminal
Ground
Compressor: F3 1 12V
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