Nissan Note E12. Instruction — part 380

MANUAL AIR CONDITIONING SYSTEM

HAC-43

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONING]

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SYMPTOM DIAGNOSIS

MANUAL AIR CONDITIONING SYSTEM

Symptom Table

INFOID:0000000009477957

SYMPTOM TABLE

Symptom

Reference Page

A/C system does not come on.

Go to Trouble Diagnosis Procedure for A/C System.

HAC-29

A/C system cannot be controlled.

Go to Self-diagnosis Function.

HAC-27

Air outlet does not change.

Go to Adjustment Procedure for Mode Door.

HAC-52

Discharge air temperature does not change.

Go to Adjustment Procedure for Air Mix Door.

HAC-52

Intake door does not change.

Go to Adjustment Procedure for Intake Door.

HAC-51

Front blower motor operation is malfunction-
ing.

Go to Trouble Diagnosis Procedure for Front Blower Motor.

HAC-37

Magnet clutch does not engage.

Go to Trouble Diagnosis Procedure for Magnet Clutch.

HAC-41

Insufficient cooling.

Go to Trouble Diagnosis Procedure for Insufficient Cooling.

HAC-44

Insufficient heating.

Go to Trouble Diagnosis Procedure for Insufficient Heating.

HAC-45

Noise.

Go to Trouble Diagnosis Procedure for Noise.

HA-16

A/C switch LED does not illuminate.

Go to Trouble Diagnosis Procedure for A/C System.

HAC-36

Both high- and low-pressure sides are too
high.

Go to Trouble Diagnosis Procedure for Abnormal Pressure.

HA-14

High-pressure side is too high and low pres-
sure side is too low.

Go to Trouble Diagnosis Procedure for Abnormal Pressure.

HA-14

High-pressure side is too low and low-pres-
sure side is too high.

Go to Trouble Diagnosis Procedure for Abnormal Pressure.

HA-14

Both high- and low-pressure side sometimes
become negative.

Go to Trouble Diagnosis Procedure for Abnormal Pressure.

HA-14

Low-pressure side sometimes becomes neg-
ative.

Go to Trouble Diagnosis Procedure for Abnormal Pressure.

HA-14

Low-pressure side becomes negative.

Go to Trouble Diagnosis Procedure for Abnormal Pressure.

HA-14

HAC-44

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONING]

INSUFFICIENT COOLING

INSUFFICIENT COOLING

Description

INFOID:0000000009477958

Symptom

• Insufficient cooling

• No cool air comes out. (Air flow volume is normal.)

Diagnosis Procedure

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NOTE:

Perform self-diagnosis with CONSULT before performing symptom diagnosis. If any malfunction result or DTC

is detected, perform the corresponding diagnosis.

1.

CHECK MAGNET CLUTCH OPERATION

1. Turn ignition switch ON.

2. Turn fan control dial ON.

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

>> Check compressor operation. Refer to

HAC-46, "Diagnosis Procedure"

.

2.

CHECK DRIVE BELT

Check tension of drive belt. Refer to

EM-17, "Inspection"

.

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

using gauge. Refer to

HA-14, "Symptom Table"

.

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 air mix door cable installation and air mix door operation.

NO

>> Repair or replace parts depending on the inspection results.

INSUFFICIENT HEATING

HAC-45

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONING]

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INSUFFICIENT HEATING

Description

INFOID:0000000009477960

Symptom

• Insufficient heating

• No warm air comes out. (Air flow volume is normal.)

Diagnosis Procedure

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NOTE:

Perform self-diagnosis with CONSULT before performing symptom diagnosis. If any malfunction result or DTC

is detected, perform the corresponding diagnosis.

1.

CHECK COOLING SYSTEM

1. Check engine coolant level and check for leakage. Refer to

CO-8, "Inspection"

.

2. Check radiator cap. Refer to

CO-8, "Inspection"

.

3. Check water flow sounds of the engine coolant. Refer to

CO-9, "Refilling"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Refill engine coolant and repair or replace the parts depending on the inspection results.

2.

CHECK HEATER HOSE

Check 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 temperature of inlet hose and outlet hose of heater core.

2. Check that 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 heater core. Refer to

HA-33, "HEATER CORE : Removal and Installation"

.

4.

CHECK AIR LEAKAGE FROM EACH DUCT

Check duct and nozzle, etc. of air conditioning system for air leakage.
Is the inspection result normal?

YES

>> Check air mix door cable installation and air mix door operation.

NO

>> Repair or replace parts depending on the inspection results.

HAC-46

< SYMPTOM DIAGNOSIS >

[MANUAL AIR CONDITIONING]

COMPRESSOR DOES NOT OPERATE

COMPRESSOR DOES NOT OPERATE

Description

INFOID:0000000009477962

SYMPTOM

Compressor does not operate.

Diagnosis Procedure

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NOTE:

• Perform self-diagnosis with CONSULT before performing symptom diagnosis. If any malfunction result or

DTC is detected, perform the corresponding diagnosis.

• Check that refrigerant system is fully charged. If the refrigerant charge is low, perform the inspection for

refrigerant leakage

1.

CHECK MAGNET CLUTCH OPERATION

Check magnet clutch. Refer to

HAC-41, "Component Function Check"

.

Does it operate normally?

YES

>> GO TO 2.

NO

>> Repair or replace malfunctioning parts.

2.

CHECK REFRIGERANT PRESSURE SENSOR

Check refrigerant pressure sensor. Refer to

EC-325, "Component Function Check"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace malfunctioning parts.

3.

CHECK A/C ON SIGNAL

Check A/C ON signal. Refer to

HAC-31, "Component Function Check"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace malfunctioning parts.

4.

CHECK BLOWER FAN ON SIGNAL

Check blower fan ON signal. Refer to

HAC-34, "Component Function Check"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace malfunctioning parts

5.

CHECK BCM OUTPUT SIGNAL

With CONSULT

1. Select “DATA MONITOR” mode of “ECM” using CONSULT.

2. Select “AIR COND SIG” and “HEATER FAN SW”, and check status under the following conditions.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to

PCS-30, "Removal and Installation"

.

NO

>> Replace BCM. Refer to

BCS-67, "Removal and Installation"

.

Monitor item

Condition

Status

AIR COND SIG

A/C switch

OFF (A/C indicator: OFF)

Off

ON (A/C indicator: ON)

On

HEATER FAN SW

Blower motor

OFF

Off

ON

On