Nissan Murano Z51. Manual - part 879

B2578, B2579 IN-VEHICLE SENSOR

HAC-171

< DTC/CIRCUIT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

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HAC

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NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to 

HAC-

165, "DTC Logic"

 or 

HAC-166, "DTC Logic"

. 

DTC CONFIRMATION PROCEDURE

1.

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

1.

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC. 

2.

Check if any DTC No. is displayed in the self-diagnosis results. 

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to 

HAC-

165, "DTC Logic"

 or 

HAC-166, "DTC Logic"

. 

Is DTC No.“B2578” or “B2579” displayed?

YES

>> Perform trouble diagnosis for the in-vehicle sensor. Refer to 

HAC-171, "Diagnosis Procedure"

. 

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005514712

1.

CHECK VOLTAGE BETWEEN IN-VEHICLE SENSOR AND GROUND

1.

Disconnect in-vehicle sensor connector.

2.

Turn ignition switch ON.

3.

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 CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND A/C AUTO AMP.

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 3.

NO

>> Repair harness or connector.

3.

CHECK IN-VEHICLE SENSOR

Check in-vehicle sensor. Refer to 

HAC-172, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp.

DTC

Items

 (CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

B2578

IN CAR SEN SHORT

Detected temperature at in-vehicle 
sensor 

−

44

°

C (

−

47

°

F) or less

• In-vehicle sensor
• A/C auto amp.
• Harness and connector

(In-vehicle sensor circuit is open, 
or there is a short in the circuit)

B2579

IN CAR SEN OPEN

Detected temperature at in-vehicle 
sensor 100

°

C (212

°

F) or more

(+)

(

−

)

Voltage

In-vehicle sensor

—

Connector

Terminal

M41

1

Ground

Approx. 5 V

In-vehicle sensor

 A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M41

2

M50

37

Existed

HAC-172

< DTC/CIRCUIT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

B2578, B2579 IN-VEHICLE SENSOR

NO

>> Replace in-vehicle sensor.

4.

CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND A/C AUTO AMP.

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.

4.

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

Is the inspection result normal?

YES

>> Replace A/C auto amp.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000005514713

1.

CHECK IN-VEHICLE SENSOR

1.

Turn ignition switch OFF.

2.

Disconnect in-vehicle sensor connector. Refer to 

VTL-89, "Exploded View"

.

3.

Check resistance between in-vehicle sensor terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace in-vehicle sensor.

In-vehicle sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M41

1

M50

36

Existed

In-vehicle sensor

—

Continuity

Connector

Terminal

M41

1

Ground

Not existed

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

B2581, B2582 INTAKE SENSOR

HAC-173

< DTC/CIRCUIT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

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B2581, B2582 INTAKE SENSOR

Description

INFOID:0000000005514714

Intake Sensor
• The intake sensor (1) is located on the evaporator (2).
• It converts air temperature after it passes through the evaporator

into a resistance value which is then input to the A/C auto amp.

Intake Sensor Circuit

DTC Logic

INFOID:0000000005514715

DTC DETECTION LOGIC

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to 

HAC-

165, "DTC Logic"

 or 

HAC-166, "DTC Logic"

. 

DTC CONFIRMATION PROCEDURE

1.

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

1.

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC. 

2.

Check if any DTC No. is displayed in the self-diagnosis results. 

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to 

HAC-

165, "DTC Logic"

 or 

HAC-166, "DTC Logic"

. 

Is DTC No.“B2581” or “B2582” displayed?

YES

>> Perform trouble diagnosis for the intake sensor. Refer to 

HAC-173, "Diagnosis Procedure"

. 

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005514716

1.

CHECK VOLTAGE BETWEEN INTAKE SENSOR AND GROUND

JPIIA1351ZZ

JPIIA0614GB

DTC

Items

 (CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

B2581

EVAP TEMP SEN SHORT

Detected temperature at intake sensor 

−

33

°

C (

−

27

°

F) or less

• Intake sensor
• A/C auto amp.
• Harness and connector

(Intake sensor circuit is open, or there is a 
short in the circuit)

B2582

EVAP TEMP SEN OPEN

Detected temperature at intake sensor 
69

°

C (156

°

F) or more

HAC-174

< DTC/CIRCUIT DIAGNOSIS >

[WITH 7 INCH DISPLAY]

B2581, B2582 INTAKE SENSOR

1.

Disconnect intake sensor connector.

2.

Turn ignition switch ON.

3.

Check voltage between intake sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND A/C AUTO AMP.

1.

Turn ignition 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 3.

NO

>> Repair harness or connector.

3.

CHECK INTAKE SENSOR

Check intake sensor. Refer to 

HAC-174, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp.

NO

>> Replace intake sensor.

4.

CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND A/C AUTO AMP.

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector.

3.

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

4.

Check continuity between intake sensor harness connector and ground.

Is the inspection result normal?

YES

>> Replace A/C auto amp.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000005514717

1.

CHECK INTAKE SENSOR

1.

Turn ignition switch OFF.

2.

Disconnect intake sensor connector.

3.

Check resistance between intake sensor terminals.

(+)

(

−

)

Voltage

Intake sensor

—

Connector

Terminal

M42

1

Ground

Approx. 5 V

Intake sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M42

2

M50

37

Existed

Intake sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M42

1

M50

16

Existed

Intake sensor

—

Continuity

Connector

Terminal

M42

1

Ground

Not existed