Nissan March K13. Manual - 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”.

Refer to 

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