Nissan March K13. Instruction — part 394
HAC-110
< SYMPTOM DIAGNOSIS >
[MANUAL AIR CONDITIONER]
MANUAL AIR CONDITIONER SYSTEM
SYMPTOM DIAGNOSIS
MANUAL AIR CONDITIONER SYSTEM
Diagnosis Chart By Symptom
INFOID:0000000006024140
CAUTION:
Perform the self-diagnosis with CONSULT-III before performing the symptom diagnosis. If any mal-
function result or DTC is detected, perform the corresponding diagnosis.
Symptom
Corresponding malfunction part
Check item/Reference
Blower motor operation is malfunctioning.
• Blower motor
• Power supply system of blower mo-
tor
• The circuit between blower motor
and fan switch.
• The circuit between blower motor
and blower fan resistor.
• Blower fan resistor.
• Fan switch (A/C control).
HAC-101, "Diagnosis Proce-
dure"
A/C indicator dose not indicate.
(Compressor is normal)
• A/C indicator (A/C control)
• The circuit between A/C control and
BCM
• BCM
XX-XX, "*****"
Magnet clutch does not operate.
(Compressor is normal)
• Magnet clutch
• The circuit between magnet clutch
and IPDM E/R
• IPDM E/R (A/C relay)
• The circuit between ECM and re-
frigerant pressure sensor
• Refrigerant pressure sensor
• CAN communication line
• A/C switch
• Blower fan ON signal
• Thermo control amp.
• BCM
HAC-113, "Diagnosis Proce-
dure"
• Insufficient cooling
• No cool air comes out. (Air flow volume is normal.)
• Magnet clutch control system
• Drive belt slipping
• Cooler cycle
• Air leakage from each duct
HAC-111, "Diagnosis Proce-
dure"
• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)
• Engine cooling system
• Heater hose
• Heater core
• Air leakage from each duct
HAC-112, "Diagnosis Proce-
dure"
Noise is heard when the A/C
system operates.
During compressor op-
eration
Cooler cycle
XX-XX, "*****"
During blower motor op-
eration
• Mixing any foreign object in blower
motor
• Blower motor fan breakage
• Blower motor rotation inferiority
HAC-102, "Component Inspec-
tion"
Air inlet dose not change.
• A/C control
• Intake door cable
• Intake door
Check the intake door installa-
tion and door operation
Discharge air temperature dose not change.
• A/C control
• Air mix door cable
• Air mix door
Check the air mix door installa-
tion and door operation
Air outlet dose not change.
• A/C control
• Mode door cable
• Mode door
Check the mode door installa-
tion and door operation
INSUFFICIENT COOLING
HAC-111
< SYMPTOM DIAGNOSIS >
[MANUAL AIR CONDITIONER]
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INSUFFICIENT COOLING
Description
INFOID:0000000006024141
Symptom
• Insufficient cooling
• No cool air comes out. (Air flow volume is normal.)
Diagnosis Procedure
INFOID:0000000006024142
CAUTION:
Perform the self-diagnosis with CONSULT-III before performing symptom diagnosis. If any malfunc-
tion result or DTC is detected, perform the corresponding diagnosis.
1.
CHECK MAGNET CLUTCH OPERATION
1.
Turn the ignition switch ON.
2.
Turn the fan control dial ON.
3.
Press the A/C switch.
4.
Check that the indicator of the A/C switch turns ON. Check visually and by sound that the compressor
operates.
5.
Press the A/C switch again.
6.
Check that the indicator of the A/C switch turns OFF. Check that the compressor stops.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Perform the diagnosis of “COMPRESSOR DOSE NOT OPERATE” in “SYMPTOM DIAGNOSIS”.
HAC-113, "Diagnosis Procedure"
.
2.
CHECK DRIVE BELT
Check tension of the drive belt. Refer to
XX-XX, "*****"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Adjust or replace drive belt depending on the inspection results.
3.
CHECK REFRIGERANT CYCLE PRESSURE
Connect the recovery/recycling recharging equipment to the vehicle and perform the pressure inspection with
the gauge. Refer to
XX-XX, "*****"
.
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 air conditioner system for leakage.
Is the inspection result normal?
YES
>> Check the air mix door cable installation and air mix door operation.
NO
>> Repair or replace parts depending on the inspection results.
HAC-112
< SYMPTOM DIAGNOSIS >
[MANUAL AIR CONDITIONER]
INSUFFICIENT HEATING
INSUFFICIENT HEATING
Description
INFOID:0000000006024143
Symptom
• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)
Diagnosis Procedure
INFOID:0000000006024144
CAUTION:
Perform the self-diagnosis with CONSULT-III before performing symptom diagnosis. If any malfunc-
tion result or DTC is detected, perform the corresponding diagnosis.
1.
CHECK COOLING SYSTEM
1.
Check the engine coolant level and check for leakage. Refer to
XX-XX, "*****"
.
2.
Check the radiator cap. Refer to
XX-XX, "*****"
.
3.
Check the water flow sounds of the engine coolant. Refer to
XX-XX, "*****"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Refill the engine coolant and repair or replace the parts depending on the inspection results.
2.
CHECK HEATER HOSE
Check the installation of heater hose by visually or touching.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace parts depending on the inspection results.
3.
CHECK HEATER CORE
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:
Always perform the temperature inspection in a short period of time because the engine coolant
temperature is very hot.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace the heater core. Refer to
XX-XX, "*****"
.
4.
CHECK AIR LEAKAGE FROM EACH DUCT
Check duct and nozzle, etc. of the air conditioner system for air leakage.
Is the inspection result normal?
YES
>> Check the air mix door cable installation and air mix door operation.
NO
>> Repair or replace parts depending on the inspection results.
COMPRESSOR DOSE DOT OPERATE
HAC-113
< SYMPTOM DIAGNOSIS >
[MANUAL AIR CONDITIONER]
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COMPRESSOR DOSE DOT OPERATE
Description
INFOID:0000000006024145
SYMPTOM
Compressor dose not operate.
Diagnosis Procedure
INFOID:0000000006024146
CAUTION:
• Perform the self-diagnosis with CONSULT-III before performing symptom diagnosis. If any malfunc-
tion result or DTC is detected, perform the corresponding diagnosis.
• Check that the refrigerant is enclosed in cooler cycle normally. If the refrigerant amount is shortage
from proper amount, perform the inspection of refrigerant leakage
1.
CHECK A/C INDICATOR
1.
Turn the ignition switch ON.
2.
Operate the blower motor.
3.
Check that A/C indicator is turned ON when pressing the A/C switch.
4.
Check that A/C indicator is turned OFF when pressing the A/C switch again.
Is inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 5.
2.
CHECK MAGNET CLUTCH OPERATION
Check the magnet clutch. Refer to
HAC-104, "Component Function Check"
Does it operate normally?
YES
>> GO TO 3.
NO
>> Repair or replace the malfunctioning parts.
3.
CHECK REFRIGERANT PRESSURE SENSOR
Check the refrigerant pressure sensor. Refer to
XX-XX, "*****"
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace the malfunctioning parts.
4.
CHECK BCM OUTPUT SIGNAL
With CONSULT-III
Check the “A/C ON SIG” or “FAN ON SIG” or “A/C RELAY SIG” in ECM.
Is the inspection result normal?
YES
>> Replace the IPDM E/R. Refer to
XX-XX, "*****"
.
NO
>> Replace the BCM. Refer to
XX-XX, "*****"
.
5.
CHECK A/C SWITCH
Check the A/C switch. Refer to
HAC-105, "Diagnosis Procedure"
.
Is inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace the malfunctioning parts.
6.
CHECK BLOWER FAN ON SIGNAL
Monitor item
Condition
Status
COMP REQ SIG
A/C switch: OFF
Off
A/C switch: ON
On
FAN REQ SW
Fan control dial: OFF
Off
Fan control dial: ON
On
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