2007 NISSAN TIIDA Cooling

INSUFFICIENT COOLING
HAC-191
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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P Both High- and Low-pressure Sides are Too Low
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 XXXX CHECKING OF
REFRIG 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 XXXX INTAKE
SENSOR CIR .
 Replace compressor.
 Repair evaporator fins.
 Replace evaporator.
 Refer to XXXX BLOWER
MOTOR CIR..
AC353A

HAC-192
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
INSUFFICIENT COOLING
Low-pressure Side Becomes Negative
Gauge indication Refrigerant cycle Probable cause Corrective action
Low-pressure side sometimes be-
comes negative. Air conditioning system does
not function and does not cy-
clically cool the compart-
ment air.
 The system constantly func-
tions for a certain period of
time after compressor is
stopped and restarted.Refrigerant does not discharge
cyclically.
↓
Moisture is frozen at expan-
sion valve outlet and inlet.
↓
Water is mixed with refrigerant. Drain water from refrigerant
or replace refrigerant.
 Replace liquid tank.
AC354A
Gauge indication Refrigerant cycle Probable cause Corrective action
Low-pressure side becomes nega-
tive.
Liquid tank or front/rear side of
expansion valve’s pipe is frost-
ed or dewed.High-pressure side is closed
and refrigerant does not flow.
↓
Expansion valve or liquid tank
is frosted.Leave the system at rest until
no frost is present. Start it
again to check whether or not
the malfunction is caused by
water or foreign particles.
 If water is the cause, initially
cooling is okay. Then the wa-
ter freezes causing a block-
age. Drain water from
refrigerant or replace refrig-
erant.
 If due to foreign particles, re-
move expansion valve and
remove the particles with dry
and compressed air (not
shop air).
 If either of the above meth-
ods cannot correct the mal-
function, replace expansion
valve.
 Replace liquid tank.
 Check oil for contamination.
AC362A

INSUFFICIENT HEATING
HAC-193
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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INSUFFICIENT HEATING
Component Function CheckINFOID:0000000001547457
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-87, "
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-98, "
Front Air Control Self-Diagnosis".
Is the inspection results normal?
YES >> GO TO 4.
NO >> Refer to HAC-197, "
Self-Diagnosis".
4.CHECK ENGINE COOLING SYSTEM
1. Check for proper engine coolant level. Refer to XX-XX, "*****"
.
2. Check hoses for leaks or kinks.
3. Check radiator cap. Refer to XX-XX, "*****"
.
4. Check for air in cooling system.
>> GO TO 5.
5.CHECK AIR MIX DOOR OPERATION
Check the operation of the air mix door.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Check the air mix door motor circuit. Refer to HAC-112, "
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 >> Both hoses warm: GO TO 9.
8.CHECK ENGINE COOLANT SYSTEM
Check engine control temperature sensor. Refer to XX-XX, "*****"
.
Is the inspection result normal?

HAC-298
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
AIR CONDITIONER CONTROL
SYMPTOM DIAGNOSIS
AIR CONDITIONER CONTROL
Symptom Matrix ChartINFOID:0000000001547373
SYMPTOM TABLE
Symptom Reference Page
A/C system does not come on. Go to Trouble Diagnosis Procedure for A/C System.HAC-278
Air outlet does not change.
Go to Trouble Diagnosis Procedure for Mode Door Motor.HAC-222
Mode door motor does not operate normally.
Discharge air temperature does not change.
Go to Trouble Diagnosis Procedure for Air Mix Door Motor.HAC-226
Air mix door motor does not operate normally.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor.HAC-230
Intake door motor does not operate normally.
Blower motor operation is malfunctioning.
Go to Trouble Diagnosis Procedure for Blower Motor.HAC-234
Blower motor operation is malfunctioning un-
der out of starting fan speed control.
Magnet clutch does not engage. Go to Trouble Diagnosis Procedure for Magnet Clutch.HAC-239
Insufficient cooling Go to Trouble Diagnosis Procedure for Insufficient Cooling.HAC-299
Insufficient heating Go to Trouble Diagnosis Procedure for Insufficient Heating.HAC-307
Noise Go to Trouble Diagnosis Procedure for Noise.HAC-309
Self-diagnosis cannot be performed. Go to Trouble Diagnosis Procedure for Self-diagnosis.HAC-311
Memory function does not operate. Go to Trouble Diagnosis Procedure for Memory Function.HAC-312

INSUFFICIENT COOLING
HAC-299
< SYMPTOM DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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INSUFFICIENT COOLING
Component Function CheckINFOID:0000000001547374
SYMPTOM: Insufficient cooling
INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE
1. Press the AUTO switch.
2. Turn temperature control dial counterclockwise until 18° C (60° F) is displayed.
3. Check for cold air at discharge air outlets.
Can the symptom be duplicated?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK FOR ANY SYMPTOMS
Perform a complete operational check for any symptoms. Refer to HAC-202, "
Operational Check".
Does another symptom exist?
YES >> Refer to HAC-298, "SymptomMatrixChart".
NO >> System OK.
3.CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 3.
4.PERFORM SELF-DIAGNOSIS
Perform self-diagnosis Refer to HAC-213, "
Front Air Control Self-Diagnosis".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Refer to HAC-218, "
Front Air Control Self-Diagnosis Code Chart".
5.CHECK DRIVE BELTS
Check compressor belt tension. Refer to EM-15, "
Checking" HR16DE EM-142, "Checking Drive Belts" or
HR18DE or EM-263, "
Inspection and Adjustment" K9K.
Is the inspection result normal?
OK >> GO TO 6.
NG >> Adjust or replace compressor belt. Refer to XX-XX, "*****"
.
6.CHECK AIR MIX DOOR OPERATION
Check and verify air mix door mechanism for smooth operation. Refer to HAC-225, "
Air Mix Door Motor Com-
ponent Function Check"
Does air mix door operate correctly?
YES >> GO TO 7.
NO >> Check air mix door motor circuit. Refer to HAC-226, "
Air Mix Door Motor Diagnosis Procedure".
7.CHECK COOLING FAN MOTOR OPERATION
Check and verify cooling fan motor for smooth operation.
Does cooling fan motor operate correctly?
YES >> GO TO 8.
NO >> Check cooling fan motor. Refer to CO-18, "
Component (Models with A/C)".
8.CHECK RECOVERY/RECYCLING EQUIPMENT BEFORE USAGE
Check recovery/recycling equipment before connecting to vehicle. Verify there is no pressure in the recovery/
recycling equipment by checking the gauges. If pressure exists, recover refrigerant from equipment lines.

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 purity in supply tank using recovery/recycling and refrigerant identifier.
Is the inspection result normal?
YES >> GO TO 10.
NO >> Check contaminated refrigerant. Refer to HA-21, "
HFC-134a (R-134a) Service Procedure".
10.CHECK FOR EVAPORATOR FREEZE UP
Start engine and run A/C. Check for evaporator freeze up.
Does evaporator freeze up?
YES >> Perform performance test diagnoses. Refer to HAC-300, "Performance Test Diagnoses".
NO >> GO TO 11.
11 .CHECK REFRIGERANT PRESSURE
Check refrigerant pressure with manifold gauge connected. Refer to HAC-303, "
Test Reading".
Is the inspection result normal?
YES >> Perform performance test diagnoses. Refer to HAC-300, "Performance Test Diagnoses".
NO >> GO TO 12.
12.CHECK AIR DUCTS
Check ducts for air leaks.
Is the inspection result normal?
YES >> System OK.
NO >> Repair air leaks.
Performance Test DiagnosesINFOID:0000000001547375
PERFORMANCE TEST DIAGNOSIS

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 Diagnoses for
Unusual Pressure"
*4HAC-226, "Air Mix Door Motor Diag-
nosis Procedure"
RJIA1601E

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
Compressor - MR18DE" or HA-34,
"Removal and Installation of Com-
pressor - HR16DE" or HA-35, "Re-
moval and Installation of Compressor
- K9K"
*2HAC-233, "Front Blower Motor Com-
ponent Function Check"
*3EM-15, "Checking" (HR16DE) or EM-
142, "Checking Drive Belts"
(MR18DE) or EM-263, "
Inspection
and Adjustment" (K9K)
RJIA3107E