Nissan Sentra. Manual — part 562
HAC-96
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
ECV (ELECTRICAL CONTROL VALVE)
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace compressor. Refer to
HA-31, "COMPRESSOR : Removal and Installation"
6.
CHECK INTERMITTENT INCIDENT
GI-39, "Intermittent Incident"
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-105, "Removal and Installation"
.
NO
>> Repair or replace malfunctioning parts.
Component Inspection
INFOID:0000000009757693
1.
CHECK ECV (ELECTRICAL CONTROL VALVE)
1. Turn ignition switch OFF.
2. Disconnect compressor connector.
3. Check continuity between compressor connector F10 terminals.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace compressor. Refer to
HA-31, "COMPRESSOR : Removal and Installation"
Terminals
Condition
Resistance (k
Ω)
Temperature:
°C (°F)
3
4
20 (68)
10.1 – 11.1
HEATER AND AIR CONDITIONING SYSTEM CONTROL SYMPTOMS
HAC-97
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
SYMPTOM DIAGNOSIS
HEATER AND AIR CONDITIONING SYSTEM CONTROL SYMPTOMS
Diagnosis Chart By Symptom
INFOID:0000000009757694
NOTE:
Perform the self-diagnoses with CONSULT before performing the symptom diagnosis. If DTC is detected, per-
form the corresponding diagnosis.
Symptom
Corresponding malfunction part
Reference
• Air conditioning does not activate.
• Air conditioning cannot be controlled.
• Operation status of air conditioning is not indicated
on display.
• A/C auto amp. ignition power supply
circuit
• Front A/C control (A/C auto amp.)
HAC-83, "A/C AUTO AMP. : Diag-
nosis Procedure"
• Air outlet does not change.
• Mode door motor does not operate normally.
• Circuit between mode door motor
and A/C auto amp.
• Mode door motor control linkage
• Mode door motor
• A/C auto amp.
• Discharge air temperature of driver side does not
change.
• Air mix door motor LH does not operate normally.
• Circuit between air mix door motor
LH and A/C auto amp.
• Air mix door motor LH installation
condition
• Air mix door motor LH
• A/C auto amp.
• Discharge air temperature of passenger side does
not change.
• Air mix door motor RH does not operate normally.
• Circuit between air mix door motor
RH and A/C auto amp.
• Air mix door motor RH installation
condition
• Air mix door motor RH
• A/C auto amp.
• Intake door does not change.
• Intake door motor does not operate normally.
• Circuit between intake door motor
and A/C auto amp.
• Intake door motor control linkage
• Intake door motor
• A/C auto amp.
Blower motor operation is malfunctioning.
• Power supply system of front blower
motor
• Circuit between front blower motor
and A/C auto amp.
• Front blower motor
• A/C auto amp.
Compressor does not operate.
• Circuit between magnet clutch and
IPDM E/R
• Magnet clutch
• IPDM E/R (A/C relay)
• Circuit between ECM and refriger-
ant pressure sensor
• Refrigerant pressure sensor
• CAN communication circuit
• A/C auto amp.
• Insufficient cooling.
• No cool air comes out. (Air flow volume is normal.)
• Magnet clutch control system
• Drive belt slipping
• Refrigerant cycle
• ECV (electrical control valve)
• Air leakage from each duct
• A/C auto amp. connection recogni-
tion signal circuit
• Temperature setting trimmer (front)
HAC-98
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
HEATER AND AIR CONDITIONING SYSTEM CONTROL SYMPTOMS
• Insufficient heating.
• No warm air comes out. (Air flow volume is nor-
mal.)
• Engine cooling system
• Heater hose
• Heater core
• Air leakage from each duct
• Temperature setting trimmer (front)
HAC-101, "Diagnosis Procedure"
Noise is heard when front
air conditioning system op-
erates.
During compressor
operation
Refrigerant cycle
During front blower
motor operation
• Mixing any foreign object in front
blower motor
• Front blower motor fan breakage
• Front blower motor rotation inferiori-
ty
HAC-92, "Component Inspection
(Blower Motor)"
• Memory function does not operate.
• Setting temperature is not memorized.
• Battery power supply system of A/C
auto amp.
• A/C auto amp.
HAC-83, "A/C AUTO AMP. : Diag-
nosis Procedure"
Symptom
Corresponding malfunction part
Reference
INSUFFICIENT COOLING
HAC-99
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
INSUFFICIENT COOLING
Description
INFOID:0000000009757695
Symptom
• Insufficient cooling
• No cool air comes out. (Air flow volume is normal.)
Diagnosis Procedure
INFOID:0000000009757696
NOTE:
Perform self-diagnoses with CONSULT before performing symptom diagnosis. If any DTC is detected, per-
form the corresponding diagnosis.
1.
CHECK MAGNET CLUTCH OPERATION
1. Turn ignition switch ON.
2. Operate fan switch.
3. Press A/C switch.
4. Check that A/C indicator turns ON. Check visually and by sound that compressor operates.
5. Press A/C switch again.
6. Check that A/C indicator turns OFF. Check that compressor stops.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Perform diagnosis of “COMPRESSOR DOES NOT OPERATE” in “SYMPTOM DIAGNOSIS”.
HAC-102, "Diagnosis Procedure"
2.
CHECK DRIVE BELT
Check tension of drive belt. Refer to
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Adjust or replace drive belt depending on the inspection results.
3.
CHECK REFRIGERANT CYCLE
Connect recovery/recycling recharging equipment to the vehicle and perform pressure inspection with gauge.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace parts depending on the inspection results.
4.
CHECK AIR LEAKAGE FROM EACH DUCT
Check duct and nozzle, etc. of the front air conditioning system for leakage.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace parts depending on the inspection results.
5.
CHECK AMBIENT TEMPERATURE DISPLAY
Check that there is not much difference between actual ambient temperature and indicated temperature on
information display in combination meter.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Perform diagnosis for the A/C auto amp. connection recognition signal circuit. Refer to
.
6.
CHECK SETTING OF TEMPERATURE SETTING TRIMMER (FRONT)
1. Check setting value of temperature setting trimmer (front). Refer to
HAC-55, "Temperature Setting Trim-
2. Check that temperature setting trimmer (front) is set to “+ direction”.
NOTE:
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст