Nissan Leaf. Manual - part 773

B2581, B2582 INTAKE SENSOR

HAC-95

< DTC/CIRCUIT DIAGNOSIS >

[AUTO A/C (WITH HEAT PUMP)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

B2581, B2582 INTAKE SENSOR

DTC Logic

INFOID:0000000010121804

DTC DETECTION LOGIC 

NOTE:

• If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to 

HAC-

87, "DTC Logic"

.

• If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. 

HAC-88,

"DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Turn power switch ON.

2. Select “Self Diagnostic Result” of “HVAC” using CONSULT.

3. Check DTC.
Is DTC detected?

YES

>> Refer to 

HAC-95, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010121805

Regarding Wiring Diagram information, refer to 

HAC-61, "Wiring Diagram"

.

1.

CHECK INTAKE SENSOR VOLTAGE SIGNAL

1. Turn power switch ON.

2. Operate the automatic air conditioning system.

3. Check voltage signal between A/C auto amp. harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 2.

2.

CHECK INTAKE SENSOR POWER SUPPLY

DTC

Items

(CONSULT screen terms)

DTC detection condition

Possible cause

B2581

INTAKE SENSOR

The intake sensor recognition temperature is 
too high [more than 100

°C (212°F)].

• Intake sensor
• A/C auto amp.
• Harness or connectors

(The sensor circuit is open or short-
ed.)

B2582

The intake sensor recognition temperature is 
too low [less than 

−42°C (−44°F)].

A/C auto amp.

Test condition

Voltage signal

Connector

+

−

Terminal

M55

34

10

• Power switch ON
• When air conditioner is op-

erating

JSIIA1663ZZ

HAC-96

< DTC/CIRCUIT DIAGNOSIS >

[AUTO A/C (WITH HEAT PUMP)]

B2581, B2582 INTAKE SENSOR

1. Turn power switch OFF.

2. Disconnect intake sensor connector. 

3. Turn power switch ON.

4. Check voltage between intake sensor harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

CHECK INTAKE SENSOR GROUND CIRCUIT FOR OPEN

1. Turn power switch OFF.

2. Disconnect 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 4.

NO

>> Repair harness or connector.

4.

CHECK INTAKE SENSOR

Check intake sensor. Refer to 

HAC-97, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-187, "Removal and Installation"

.

NO

>> Replace intake sensor. Refer to 

HAC-193, "Removal and Installation"

.

5.

CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR OPEN

1. Turn power switch OFF.

2. Disconnect 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 6.

NO

>> Repair harness or connector.

6.

CHECK INTAKE SENSOR POWER SUPPLY CIRCUIT FOR SHORT

Check continuity between intake sensor harness connector and ground. 

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-187, "Removal and Installation"

.

NO

>> Repair harness or connector.

+

−

Voltage

(Approx.)

Intake sensor

Connector

Terminal

M141

1

Ground

5 V

Intake sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M141

2

M55

30

Yes

Intake sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M141

1

M55

34

Yes

Intake sensor

—

Continuity

Connector

Terminal

M141

1

Ground

No

B2581, B2582 INTAKE SENSOR

HAC-97

< DTC/CIRCUIT DIAGNOSIS >

[AUTO A/C (WITH HEAT PUMP)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

7.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-53, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-187, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning components.

Component Inspection

INFOID:0000000010121806

1.

CHECK INTAKE SENSOR

1. Remove intake sensor. Refer to 

HAC-193, "Removal and Installation"

.

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

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace intake sensor. Refer to 

HAC-193, "Removal and Installation"

.

Terminal

Condition

Resistance: k

Ω

Temperature: 

°C (°F)

1

2

−20 (−4)

16.50

−10 (14)

9.92

0 (32)

6.19

10 (50)

3.99

20 (68)

2.65

25 (77)

2.19

30 (86)

1.81

40 (104)

1.27

HAC-98

< DTC/CIRCUIT DIAGNOSIS >

[AUTO A/C (WITH HEAT PUMP)]

B2630, B2631 SUNLOAD SENSOR

B2630, B2631 SUNLOAD SENSOR

DTC Logic

INFOID:0000000010121807

DTC DETECTION LOGIC 

NOTE:

• If DTC is displayed along with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to 

HAC-

87, "DTC Logic"

.

• If DTC is displayed along with DTC U1010, first perform the trouble diagnosis for DTC U1010. 

HAC-88,

"DTC Logic"

.

• Sunload sensor may register a malfunction when indoors, at dusk, or at other times when light is insufficient.

When performing the diagnosis indoors, use a lamp (60 W or more) that is pointed at the sunload sensor.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Turn power switch ON.

2. Select “Self Diagnostic Result” of “HVAC” using CONSULT.

3. Check DTC.
Is DTC detected?

YES

>> Refer to 

HAC-98, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010121808

Regarding Wiring Diagram information, refer to 

HAC-61, "Wiring Diagram"

.

1.

CHECK SUNLOAD SENSOR VOLTAGE SIGNAL

1. Turn power switch ON.

2. Operate the automatic air conditioning system.

3. Move 60 W lamp to or from the sunload sensor to check that a voltage signal between A/C auto amp. har-

ness connector terminals changes.

Is the inspection result normal?

YES

>> GO TO 7.

DTC

Items

(CONSULT screen terms)

DTC detection condition

Possible cause

B2630

SUNLOAD SENSOR

Detected calorie at sunload sensor 1677 W/m

2

 

(1442 kcal/m

2

·h) or more.

• Sunload sensor
• A/C auto amp.
• Harness or connectors

(The sensor circuit is open or short-
ed.)

B2631

Detected calorie at sunload sensor 33 W/m

2

 (28 

kcal/m

2

·h) or less.

A/C auto amp.

Test condition

Voltage signal

Connector

+

−

Terminal

M55

35

10

• Power switch ON
• When air conditioner is op-

erating

JSIIA1664ZZ