Infiniti G35 (V35) Sedan. Manual — part 787
HAC-120
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
INSUFFICIENT COOLING
NO
>> Go to appropriate malfunctioning sensor circuit. Refer to
HAC-44, "WITHOUT LEFT AND RIGHT
VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(Without left and right ventilation temperature separately control system) or
AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis
Description"
(With left and right ventilation temperature separately control system), see No. 11.
6.
PERFORM SELF-DIAGNOSIS STEP-4
Perform self-diagnosis STEP-4. Refer to
HAC-44, "WITHOUT LEFT AND RIGHT VENTILATION TEMPERA-
TURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(Without left and right ventilation tempera-
ture separately control system) or
HAC-50, "WITH LEFT AND RIGHT VENTILATION TEMPERATURE
SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(With left and right ventilation temperature sepa-
rately control system), see No.1 to 5.
Is it operated normally?
YES
>> GO TO 7.
NO
>> Perform the diagnosis applicable to each output device.
7.
PERFORM SELF-DIAGNOSIS STEP-5
Perform self-diagnosis STEP-5. Refer to
HAC-44, "WITHOUT LEFT AND RIGHT VENTILATION TEMPERA-
TURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(Without left and right ventilation tempera-
ture separately control system) or
HAC-50, "WITH LEFT AND RIGHT VENTILATION TEMPERATURE
SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(With left and right ventilation temperature sepa-
rately control system), see No.1 to 10.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Go to appropriate malfunctioning sensor circuit. Refer to
HAC-44, "WITHOUT LEFT AND RIGHT
VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(Without left and right ventilation temperature separately control system) or
AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis
Description"
(With left and right ventilation temperature separately control system).
8.
CHECK A/C COMPRESSOR BELT
Check the A/C compressor belt. Refer to
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Adjust or replace the A/C compressor belt.
9.
CHECK AIR LEAKAGE FROM DUCT
Check duct and nozzle, etc. of A/C system for air leakage.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Repair or replace parts according to the inspection results.
10.
CHECK POWER SUPPLY FOR ECV (ELECTRIC CONTROL VALVE)
1.
Disconnect compressor (ECV) connector.
2.
Turn ignition switch ON.
3.
Check voltage between compressor (ECV) harness connector F43 terminal 2 and ground.
Is the inspection result normal?
YES
>> GO TO 12.
NO
>> GO TO 11.
11.
CHECK FUSE
(+)
(
−
)
Voltage
Compressor (ECV)
—
Connector
Terminal
F43
2
Ground
Battery voltage
INSUFFICIENT COOLING
HAC-121
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Check power supply circuit and 10A fuse [No. 3, located in the fuse block (J/B)]. Refer to
nector and Terminal Arrangement"
Is the inspection result normal?
YES
>> Check harness for open circuit. Repair or replace if necessary.
NO
>> Replace fuse and check harness for short circuit. Repair or replace if necessary.
12.
CHECK ECV CONTROL SIGNAL
1.
Turn ignition switch OFF.
2.
Reconnect compressor (ECV) connector.
3.
Perform self-diagnosis. Refer to
HAC-44, "WITHOUT LEFT AND RIGHT VENTILATION TEMPERATURE
SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(Without left and right ventilation tempera-
ture separately control system) or
HAC-50, "WITH LEFT AND RIGHT VENTILATION TEMPERATURE
SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(With left and right ventilation temperature
separately control system).
4.
Set in self-diagnosis STEP-4 (Code No. 45).
5.
Confirm ECV control signal between unified meter and A/C amp
harness connector M67 terminal 65 and ground using an oscillo-
scope.
Is the inspection result normal?
YES
>> Replace compressor.
NO
>> GO TO 13.
13.
CHECK CIRCUIT CONTINUITY BETWEEN ECV AND UNIFIED METER AND A/C AMP.
1.
Turn ignition switch OFF.
2.
Disconnect compressor (ECV) connector and unified meter and A/C amp.connector.
3.
Check continuity between compressor (ECV) harness connector F43 terminals 3 and unified meter and A/
C amp harness connector M67 terminal 65.
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> Repair the harnesses or connectors.
14.
CHECK ECV
Check continuity between compressor (ECV) connector F43 terminals 2 and 3.
Is the inspection result normal?
YES
>> Replace the unified meter and A/C amp.
NO
>> Replace the compressor.
SJIA1765E
(+)
(
−
)
Continuity
Compressor (ECV)
Unified meter and A/C amp.
Connector
Terminal
Connector
Terminal
F43
3
M67
65
Continuity should exist
(+)
(
−
)
Continuity
Mode door motor
Mode door motor
Connector
Terminal
Connector
Terminal
M253
2
F43
3
Continuity should exist
HAC-122
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
INSUFFICIENT HEATING
INSUFFICIENT HEATING
Description
INFOID:0000000000959977
Symptom
• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)
Inspection procedure
INFOID:0000000000959978
1.
CHECK COOLING SYSTEM
1.
Check engine coolant level and check for leakage. Refer to
2.
Check radiator cap. Refer to
CO-12, "RADIATOR CAP : Inspection"
3.
Check water flow sounds of engine coolant. Refer to
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Refill the engine coolant and repair or replace the parts according to the inspection results.
2.
CHECK SETTING OF TEMPERATURE SETTING TRIMMER
1.
Check the setting of temperature setting trimmer. Refer to
HAC-5, "WITHOUT LEFT AND RIGHT VENTI-
LATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Description & Inspection"
(Without left
and right ventilation temperature separately control system) or
HAC-9, "WITH LEFT AND RIGHT VENTI-
LATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Description & Inspection"
(With left and
right ventilation temperature separately control system).
2.
Check that the temperature setting trimmer is set to “
−
direction”.
NOTE:
The control temperature can be set with the setting of temperature setting trimmer.
3.
Set temperature control dial to “0”.
Are the symptoms solved?
YES
>> Perform the setting separately if necessary. END.
NO
>> GO TO 3.
3.
CHECK OPERATION
1.
Turn temperature dial (driver side) and raise temperature setting to 32
°
C (90
°
F) after warming up the
engine.
2.
Check that warm air blows from outlets.
Is the inspection result normal?
YES
>> END.
NO
>> GO TO 4.
4.
PERFORM SELF-DIAGNOSIS STEP-2
Perform self-diagnosis STEP-2. Refer to
HAC-44, "WITHOUT LEFT AND RIGHT VENTILATION TEMPERA-
TURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(Without left and right ventilation tempera-
ture separately control system) or
HAC-50, "WITH LEFT AND RIGHT VENTILATION TEMPERATURE
SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(Witt left and right ventilation temperature sepa-
rately control system), see No. 1 to 2.
Does code No. 20 appear on the display?
YES
>> GO TO 5.
NO
>> Go to appropriate malfunctioning sensor circuit. Refer to
HAC-44, "WITHOUT LEFT AND RIGHT
VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(Without left and right ventilation temperature separately control system) or
AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis
Description"
(With left and right ventilation temperature separately control system), see No. 11.
5.
PERFORM SELF-DIAGNOSIS STEP-4
Perform self-diagnosis STEP-4. Refer to
HAC-44, "WITHOUT LEFT AND RIGHT VENTILATION TEMPERA-
TURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(Without left and right ventilation tempera-
ture separately control system) or
INSUFFICIENT HEATING
HAC-123
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(With left and right ventilation temperature sepa-
rately control system), see No. 1 to 5.
Is it installed normally?
YES
>> GO TO 6.
NO
>> Perform the diagnosis applicable to each output device.
6.
PERFORM SELF-DIAGNOSIS STEP-5
Perform self-diagnosis STEP-5. Refer to
HAC-44, "WITHOUT LEFT AND RIGHT VENTILATION TEMPERA-
TURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(Without left and right ventilation tempera-
ture separately control system) or
HAC-50, "WITH LEFT AND RIGHT VENTILATION TEMPERATURE
SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(With left and right ventilation temperature sepa-
rately control system).
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Go to appropriate malfunctioning sensor circuit. Refer to
HAC-44, "WITHOUT LEFT AND RIGHT
VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis Description"
(Without left and right ventilation temperature separately control system) or
AND RIGHT VENTILATION TEMPERATURE SEPARATELY CONTROL SYSTEM : Diagnosis
Description"
(With left and right ventilation temperature separately control system).
7.
CHECK AIR LEAKAGE FROM DUCT
Check duct and nozzle, etc. of A/C system for air leakage.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace parts according to the inspection results.
8.
CHECK HEATER HOSE INSTALLATION CONDITION
Check the heater hose installation condition visually (for twist, crush, etc.).
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair or replace parts according to the inspection results.
9.
CHECK TEMPERATURE OF HEATER HOSE
1.
Check the temperature of inlet hose and outlet hose of heater core.
2.
Check that the inlet side of heater core is hot and the outlet side is slightly lower than/almost equal to the
inlet side.
CAUTION:
The temperature inspection should be performed in a short time because the engine coolant tem-
perature is too hot.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Replace the heater core after performing the procedures after the cooling system inspection
again. GO TO 1.
10.
REPLACE HEATER CORE
Replace the heater core. Refer to heater core. Refer to
VTL-43, "Removal and Installation"
.
Are the symptoms solved?
YES
>> END
NO
>> Perform the procedures after the cooling system inspection again. GO TO 1.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст