2007 NISSAN TIIDA Service Repair Manual

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Page 3633 of 5883

NISSAN TIIDA 2007 Service Repair Manual HAC-300
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
INSUFFICIENT COOLING
>> GO TO 9.
9.CHECK REFRIGERANT PURITY
1. Connect recovery/recycling equipment to vehicle.
2. Confirm refrigerant puri

Page 3634 of 5883

NISSAN TIIDA 2007 Service Repair Manual INSUFFICIENT COOLING
HAC-301
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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*1HAC-302, "Performance Chart"*2HAC-302, "Performance Chart"*3HAC-303, "Trouble Diagn

Page 3635 of 5883

NISSAN TIIDA 2007 Service Repair Manual HAC-302
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
INSUFFICIENT COOLING
Performance Chart
INFOID:0000000001547376
PERFORMANCE CHART
Test Condition
*1HA-32, "Removal and Installation of
Comp

Page 3636 of 5883

NISSAN TIIDA 2007 Service Repair Manual INSUFFICIENT COOLING
HAC-303
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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Testing must be performed as follows:
Test ReadingINFOID:0000000001547377
TEST READIN

Page 3637 of 5883

NISSAN TIIDA 2007 Service Repair Manual HAC-304
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
INSUFFICIENT COOLING
Whenever system’s high and/or low side pressure(s) is/are unusual, diagnose using a manifold gauge. The
marker above

HAC-304
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
INSUFFICIENT COOLING
Whenever system’s high and/or low side pressure(s) is/are unusual, diagnose using a manifold gauge. The
marker above the gauge scale in the following tables indicates the standard (usual) pressure range. Since the
standard (usual) pressure, however, differs from vehicle to vehicle, refer to above table (Ambient air tempera-
ture-to-operating pressure table).
Both High- and Low-pressure Sides are Too High
High-pressure Side is Too High and Low-pressure Side is Too Low
High-pressure Side is Too Low and Low-pressure Side is Too High
Gauge indication Refrigerant cycle Probable cause Corrective action
Both high- and low-pressure
sides are too high.Pressure is reduced soon af-
ter water is splashed on con-
denser.Excessive refrigerant charge in refrig-
eration cycle.Reduce refrigerant until
specified pressure is ob-
tained.
Air suction by cooling fan is in-
sufficient.Insufficient condenser cooling perfor-
mance.
↓
1. Condenser fins are clogged.
2. Improper fan rotation of cooling
fan. Clean condenser.
Check and repair cooling
fan if necessary.
Low-pressure pipe is not
cold.
When compressor is
stopped high-pressure val-
ue quickly drops by approx-
imately 196 kPa (1.96 bar, 2
kg/cm
2, 28 psi). It then de-
creases gradually thereaf-
ter.Poor heat exchange in condenser
(After compressor operation stops,
high-pressure decreases too slowly.).
↓
Air in refrigeration cycle.Evacuate repeatedly and
recharge system.
Engine tends to overheat. Engine cooling systems malfunction.Check and repair each en-
gine cooling system.
An area of the low-pressure
pipe is colder than areas
near the evaporator outlet.
Plates are sometimes cov-
ered with frost. Excessive liquid refrigerant on low-
pressure side.
Excessive refrigerant discharge
flow.
Expansion valve is open a little
compared with the specification.
↓
Improper expansion valve adjust-
ment.Replace expansion valve.
AC359A
Gauge indication Refrigerant cycle Probable cause Corrective action
High-pressure side is too high
and low-pressure side is too low.
Upper side of condenser and
high-pressure side are hot,
however, liquid tank is not so
hot.High-pressure tube or parts located
between compressor and condenser
are clogged or crushed. Check and repair or re-
place malfunctioning
parts.
Check oil for contami-
nation.
AC360A

Page 3638 of 5883

NISSAN TIIDA 2007 Service Repair Manual INSUFFICIENT COOLING
HAC-305
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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Low-pressure Side Sometimes Becomes Neg

INSUFFICIENT COOLING
HAC-305
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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Low-pressure Side Sometimes Becomes Negative
Gauge indication Refrigerant cycle Probable cause Corrective action
High-pressure side is too low
and low-pressure side is too
high.High- and low-pressure sides
become equal soon after com-
pressor operation stops.Compressor pressure operation
is improper.
↓
Damaged inside compressor
packings.Replace compressor.
No temperature difference be-
tween high- and low-pressure
sides.Compressor pressure operation
is improper.
↓
Damaged inside compressor
packings.Replace compressor.
AC356A
Gauge indication Refrigerant cycle Probable cause Corrective action
Both high- and low-pressure
sides are too low. There is a big temperature dif-
ference between liquid tank
outlet and inlet. Outlet tem-
perature is extremely low.
Liquid tank inlet and expan-
sion valve are frosted.Liquid tank inside is slightly
clogged. Replace liquid tank.
Check oil for contamination.
Temperature of expansion
valve inlet is extremely low as
compared with areas near liq-
uid tank.
Expansion valve inlet may be
frosted.
Temperature difference oc-
curs somewhere in high-pres-
sure side.High-pressure pipe located be-
tween liquid tank and expansion
valve is clogged. Check and repair malfunc-
tioning parts.
Check oil for contamination.
Expansion valve and liquid tank
are warm or only cool when
touched.Low refrigerant charge.
↓
Leaking fittings or componentsCheck refrigerant for leaks.
Refer to HA-22, "
Checking of
Refrigerant Leaks".
There is a big temperature dif-
ference between expansion
valve inlet and outlet while the
valve itself is frosted.Expansion valve closes a little
compared with the specification.
↓
1. Improper expansion valve
adjustment.
2. Malfunctioning expansion
valve.
3. Outlet and inlet may be
clogged. Remove foreign particles by
using compressed air.
Replace expansion valve.
Check oil for contamination.
An area of the low-pressure pipe
is colder than areas near the
evaporator outlet.Low-pressure pipe is clogged or
crushed. Check and repair malfunc-
tioning parts.
Check oil for contamination.
Air flow volume is not enough or
is too low.Evaporator is frozen. Check intake sensor circuit.
Refer to HAC-229, "
Intake
Door Motor Component
Function Check".
Replace compressor.
Repair evaporator fins.
Replace evaporator.
Refer to HAC-233, "
Front
Blower Motor Component
Function Check".
AC353A

Page 3639 of 5883

NISSAN TIIDA 2007 Service Repair Manual HAC-306
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
INSUFFICIENT COOLING
Low-pressure Side Becomes Negative
Gauge indication Refrigerant cycle Probable cause Corrective action
Low-pressure si

Page 3640 of 5883

NISSAN TIIDA 2007 Service Repair Manual INSUFFICIENT HEATING
HAC-307
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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INSUFFICIENT HEATING
Component Function CheckINFOID:0000000001547379
SYMPTOM: Insuffi

INSUFFICIENT HEATING
HAC-307
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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INSUFFICIENT HEATING
Component Function CheckINFOID:0000000001547379
SYMPTOM: Insufficient heating
INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE INCREASE
1. Press the AUTO switch.
2. Turn the temperature control dial (driver) clockwise until 32° C (90° F) is displayed.
3. Check for hot air at discharge air outlets.
Can this symptom be duplicated?
YES >> GO TO 2.
NO >> Perform complete system operational check. Refer to HAC-202, "
Operational Check".
2.CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 3.
3.PERFORM SELF-DIAGNOSIS
Perform self-diagnosis. Refer to HAC-213, "
Front Air Control Self-Diagnosis".
Is the inspection results normal?
YES >> GO TO 4.
NO >> Refer to HAC-218, "
Front Air Control Self-Diagnosis Code Chart".
4.CHECK ENGINE COOLING SYSTEM
1. Check for proper engine coolant level. Refer to CO-11, "
Inspection" (HR16DE) or CO-35, "Inspection"
(HR18DE) or CO-58, "Inspection" (K9K).
2. Check hoses for leaks or kinks.
3. Check radiator cap. Refer to CO-14, "
Checking Radiator Cap" (HR16DE) CO-38, "Checking Radiator
Cap" or (HR18DE) or CO-60, "Checking Radiator Cap" (K9K).
4. Check for air in cooling system.
>> GO TO 5.
5.CHECK AIR MIX DOOR OPERATION
Check the operation of the air mix door. Refer to HAC-225, "
Air Mix Door Motor Component Function Check".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Check the air mix door motor circuit. Refer to HAC-226, "
Air Mix Door Motor Diagnosis Proce-
dure".
6.CHECK AIR DUCTS
Check for disconnected or leaking air ducts.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair all disconnected or leaking air ducts.
7.CHECK HEATER HOSE TEMPERATURES
1. Start engine and warm it up to normal operating temperature.
2. Touch both the inlet and outlet heater hoses.
Is the inspection result normal?
YES >> Hot inlet hose and a warm outlet hose: GO TO 8.
NO >> Inlet hose cold: GO TO 11.
Both hoses warm: GO TO 9.

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