Nissan Juke F15. Manual - part 855

B2578, B2579 IN-VEHICLE SENSOR

HAC-55

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

B2578, B2579 IN-VEHICLE SENSOR

DTC Logic

INFOID:0000000012200042

DTC DETECTION LOGIC 

NOTE:

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

HAC-

53, "DTC Logic"

.

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

HAC-54,

"DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Turn ignition switch ON.

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

3. Check DTC.
Is DTC detected?

YES

>> Refer to 

HAC-55, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000012200043

1.

CHECK IN-VEHICLE SENSOR POWER SUPPLY

1. Turn ignition switch OFF.

2. Disconnect in-vehicle sensor connector. 

3. Turn ignition switch ON.

4. Check voltage between in-vehicle sensor harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK IN-VEHICLE SENSOR GROUND CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

2. Disconnect A/C auto amp. connector. 

3. Check continuity between in-vehicle sensor harness connector and A/C auto amp harness connector. 

Is the inspection result normal?

DTC

Items

(CONSULT screen terms)

DTC detection condition

Possible cause

B2578

IN-VEHICLE SENSOR

The in-vehicle sensor recognition temperature 
is too high [more than 100

°C (212°F)].

• In-vehicle sensor
• A/C auto amp.
• Harness or connectors

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

B2579

The in-vehicle sensor recognition temperature 
is too low [less than 

−42°C (−44°F)].

+

−

Voltage

(Approx.)

In-vehicle sensor

Connector

Terminal

M41

1

Ground

5 V

In-vehicle sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M41

2

M50

10

Existed

HAC-56

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B2578, B2579 IN-VEHICLE SENSOR

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK IN-VEHICLE SENSOR

Check in-vehicle sensor. Refer to 

HAC-56, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-93, "Removal and Installation"

.

NO

>> Replace in-vehicle sensor. Refer to 

HAC-95, "Removal and Installation"

.

4.

CHECK IN-VEHICLE SENSOR POWER SUPPLY CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

2. Disconnect A/C auto amp. connector. 

3. Check continuity between in-vehicle sensor harness connector and A/C auto amp. harness connector. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK IN-VEHICLE SENSOR POWER SUPPLY CIRCUIT FOR SHORT

Check continuity between in-vehicle sensor harness connector and ground. 

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-93, "Removal and Installation"

.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000012200044

1.

CHECK IN-VEHICLE SENSOR

1. Remove in-vehicle sensor. Refer to 

HAC-95, "Removal and Installation"

. 

2. Check resistance between in-vehicle sensor terminals. Refer to applicable table for the normal value. 

In-vehicle sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M41

1

M50

2

Existed

In-vehicle sensor

—

Continuity

Connector

Terminal

M41

1

Ground

Not existed

B2578, B2579 IN-VEHICLE SENSOR

HAC-57

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace in-vehicle sensor. Refer to 

HAC-95, "Removal and Installation"

.

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

HAC-58

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B257B, B257C AMBIENT SENSOR

B257B, B257C AMBIENT SENSOR

DTC Logic

INFOID:0000000012200045

DTC DETECTION LOGIC 

NOTE:

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

HAC-

53, "DTC Logic"

.

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

HAC-54,

"DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Turn ignition switch ON.

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

3. Check DTC.
Is DTC detected?

YES

>> Refer to 

HAC-58, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000012200046

1.

CHECK AMBIENT SENSOR POWER SUPPLY

1. Turn ignition switch OFF.

2. Disconnect ambient sensor connector. 

3. Turn ignition switch ON.

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

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK AMBIENT SENSOR GROUND CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

2. Disconnect A/C auto amp. connector. 

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

Is the inspection result normal?

DTC

Items

(CONSULT screen terms)

DTC detection condition

Possible cause

B257B

AMBIENT SENSOR

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

°C (212°F)].

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

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

B257C

The ambient sensor recognition temperature is 
too low [less than 

−42°C (−44°F)].

+

−

Voltage

(Approx.)

Ambient sensor

Connector

Terminal

E53

1

Ground

5 V

Ambient sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

E53

2

M50

10

Existed