Nissan Cube. Manual - part 550

HAC-38

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

IN-VEHICLE SENSOR

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the in-vehicle sensor. 

Terminal

Condition

Resistance: k

Ω

Temperature: 

°

C (

°

F) 

1

2

−

15 (5)

12.73

−

10 (14)

9.92

−

5 (23)

7.80

0 (32) 

6.19

5 (41) 

4.95

10 (50)

3.99

15 (59)

3.24

20 (68)

2.65

25 (77)

2.19

30 (86)

1.81

35 (95)

1.51

40 (104)

1.27

45 (113)

1.07

INTAKE SENSOR

HAC-39

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

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A

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HAC

N

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INTAKE SENSOR

Description

INFOID:0000000009950985

COMPONENT DESCRIPTION

• Intake sensor (1) is located on the evaporator. 
• The intake sensor converts the evaporator surface temperature

detected with thermistor into the voltage, and the A/C auto amp.
inputs this voltage. 

INTAKE TEMPERATURE CORRECTION

• The A/C auto amp. inputs the temperature detected with the intake sensor as the evaporator surface tem-

perature. 

• Perform the correction of the temperature detected with the intake sensor for air conditioner control. 
• The A/C auto amp. performs the correction so that the recognition intake temperature changes depending

on the difference between the detected intake temperature and the recognition intake temperature. If the dif-
ference is large, the changing is early. The changing becomes slow as the difference becomes small. 

Diagnosis Procedure

INFOID:0000000009950986

1.

CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect the intake sensor connector. 

3.

Turn the ignition switch ON.

4.

Check voltage between intake sensor harness connector and the ground. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK INTAKE SENSOR GROUND CIRCUIT CONTINUITY

1.

Turn the ignition switch OFF.

2.

Disconnect the A/C auto amp. connector. 

3.

Check continuity between intake sensor harness connector and A/C auto amp. harness connector. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the harnesses or connectors.

3.

CHECK INTAKE SENSOR

Check the intake sensor components. Refer to 

HAC-40, "Component Inspection"

. 

Is the inspection result normal?

JPIIA1749ZZ

(+)

(

−

)

Voltage

(Approx.)

Intake sensor

—

Connector

Terminal

M42

1

Ground

5 V

Intake sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M42

2

M50

6

Existed

HAC-40

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

INTAKE SENSOR

YES

>> INSPECTION END

NO

>> Replace the intake sensor. 

4.

CHECK INTAKE SENSOR OPEN CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect the A/C auto amp. connector. 

3.

Check continuity between intake sensor harness connector and A/C auto amp. harness connector. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair the harnesses or connectors.

5.

CHECK INTAKE SENSOR SHORT CIRCUIT

Check continuity between intake sensor harness connector and the ground. 

Is the inspection result normal?

YES

>> Replace the A/C auto amp. 

NO

>> Repair the harnesses or connectors.

Component Inspection

INFOID:0000000009950987

1.

CHECK INTAKE SENSOR

1.

Turn the ignition switch OFF.

2.

Disconnect the intake sensor connector.

3.

Check the resistance between the intake sensor terminals. Refer to the applicable table for the normal
value. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the intake sensor. 

Intake sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal 

M42

1

M51

23

Existed

Intake sensor

—

Continuity

Connector

Terminal

M42

1

Ground

Not existed.

Terminal

Condition

Resistance: k

Ω

Temperature: 

°

C (

°

F)

1

2

−

15 (5)

12.34

−

10 (14)

9.62

−

5 (23)

7.56

0 (32)

6.00

5 (41)

4.80

10 (50)

3.87

15 (59)

3.15

20 (68)

2.57

25 (77)

2.12

30 (86)

1.76

35 (95)

1.47

40 (104)

1.23

45 (113)

1.04

SUNLOAD SENSOR

HAC-41

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

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HAC

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SUNLOAD SENSOR

Description

INFOID:0000000009950988

 COMPONENT DESCRIPTION

• The sunload sensor (1) is installed to the right side of instrument

panel assembly. 

• The sunload sensor converts the sunload amount (illuminance)

into the current value with the photodiode. The A/C auto amp. cal-
culates this current value to the voltage and inputs it. 

SUNLOAD AMOUNT CORRECTION

• The A/C auto amp. inputs the sunload amount detected with the sunload sensor. 
• Perform the correction of the sunload amount detected with the sunload sensor for each air conditioner con-

trol. 

• When the sunload amount suddenly changes, for example when entering a tunnel, perform the correction so

that the recognition sunload amount of the A/C auto amp. changes slowly. 

Diagnosis Procedure

INFOID:0000000009950989

1.

CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect the sunload sensor connector. 

3.

Turn the ignition switch ON.

4.

Check voltage between sunload sensor harness connector and the ground. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK SUNLOAD SENSOR GROUND CIRCUIT CONTINUITY

1.

Turn the ignition switch OFF.

2.

Disconnect the A/C auto amp. connector. 

3.

Check continuity between sunload sensor harness connector and A/C auto amp. harness connector. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the harnesses or connectors.

3.

CHECK SUNLOAD SENSOR

1.

Connect the sunload sensor connector. 

2.

Connect the A/C auto amp. connector. 

3.

Check the sunload sensor components. Refer to 

HAC-42, "Component Inspection"

. 

JPIIA1729ZZ

(+)

(

−

)

Voltage

(Approx.)

Sunload sensor

—

Connector

Terminal

M74

1

Ground

5 V

Sunload sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M74

2

M50

6

Existed