Nissan March K13. Instruction — part 384
HAC-70
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
INSUFFICIENT COOLING
2.
Check that the temperature setting trimmer is set to “+ direction”.
NOTE:
The control temperature can be set with the setting of the temperature setting trimmer.
3.
Set the difference between the set temperature and control temperature to “0”.
Is inspection result normal?
YES
>> INSPECTION END
NO
>> Replace the A/C auto amp.
INSUFFICIENT HEATING
HAC-71
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
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INSUFFICIENT HEATING
Description
INFOID:0000000006024075
Symptom
• Insufficient heating
• No warm air comes out. (Air flow volume is normal.)
Diagnosis Procedure
INFOID:0000000006024076
CAUTION:
Perform the self-diagnoses with on board diagnosis and CONSULT-III before performing symptom
diagnosis. If any malfunction 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
>> GO TO 5.
NO
>> Repair or replace parts depending on the inspection results.
5.
CHECK SETTING OF TEMPERATURE SETTING TRIMMER
1.
Check the setting value of temperature setting trimmer. Refer to
HAC-41, "Temperature Setting Trimmer"
.
2.
Check that the temperature setting trimmer is set to “
−
direction”.
NOTE:
The control temperature can be set by the temperature setting trimmer.
3.
Set the difference between the set temperature and control temperature to “0”.
Are the symptoms solved?
YES
>> INSPECTION END
NO
>> Replace the A/C auto amp.
HAC-72
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
COMPRESSOR DOSE DOT OPERATE
COMPRESSOR DOSE DOT OPERATE
Description
INFOID:0000000006024077
SYMPTOM
Compressor dose not operate.
Diagnosis Procedure
INFOID:0000000006024078
CAUTION:
• Perform the self-diagnoses with on board diagnosis and CONSULT-III before performing symptom
diagnosis. If any malfunction 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 MAGNET CLUTCH OPERATION
Check the magnet clutch. Refer to
HAC-60, "Component Function Check"
.
Does it operate normally?
YES
>> GO TO 2.
NO
>> Repair or replace the malfunctioning parts.
2.
CHECK REFRIGERANT PRESSURE SENSOR
Check the refrigerant pressure sensor. Refer to
XX-XX, "*****"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace the malfunctioning parts.
3.
CHECK BCM INPUT SIGNAL
With CONSULT-III
Check the “COMP REQ SIG” or “FAN REQ SW” in “DATA MONITOR” of BCM.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
CHECK BCM OUTPUT SIGNAL
With CONSULT-III
Check the “A/C ON SIG” or “FAN ON SIG” in “A/C RELAY SIG” of ECM.
Is the inspection result normal?
YES
>> Replace the IPDM E/R. Refer to
XX-XX, "*****"
(WITH I-KEY) or
XX-XX, "*****"
(WITHOUT I-
KEY).
NO
>> Replace the BCM. Refer to
XX-XX, "*****"
(WITH I-KEY) or
XX-XX, "*****"
(WITHOUT I-KEY).
5.
CHECK A/C ON SIGNAL
Monitor item
Condition
Status
COMP REQ SIG
A/C switch: OFF
Off
A/C switch: ON
On
FAN REQ SW
Fan control switch: OFF
Off
Fan control switch: ON
On
Monitor item
Condition
Status
COMP REQ SIG
A/C switch: OFF
Off
A/C switch: ON
On
FAN REQ SW
Fan control switch: OFF
Off
Fan control switch: ON
On
COMPRESSOR DOSE DOT OPERATE
HAC-73
< SYMPTOM DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
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Check the A/C ON signal. Refer to
HAC-61, "Component Function Check"
Is inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace the malfunctioning parts.
6.
CHECK BLOWER FAN ON SIGNAL
Check the blower fan ON signal. Refer to
HAC-63, "Component Function Check"
.
Is the inspection result normal?
YES
>> Replace the A/C auto amp.
NO
>> Repair or replace the malfunctioning parts
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