Nissan X-Trail 32. Manual - part 1402

B24A4 INTAKE SENSOR

HAC-83

< 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

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK INTAKE SENSOR

Check intake sensor. Refer to 

HAC-83, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-126, "Removal and Installation"

.

NO

>> Replace intake sensor. Refer to 

HAC-130, "Removal and Installation"

.

6.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-44, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-126, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning parts.

Component Inspection

INFOID:0000000010939740

NOTE:
The intake sensor cannot be reused. If the intake sensor harness connector is disconnected, sensor must be
replaced.

1.

CHECK INTAKE SENSOR

1.

Remove intake sensor from A/C unit assembly without disconnecting intake sensor connector. Refer to

HAC-130, "Removal and Installation"

. 

2.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace intake sensor. Refer to 

HAC-130, "Removal and Installation"

.

Intake sensor

Condition

Resistance: k

Ω

Con-

nector

Terminal

Temperature: 

°

C (

°

F) 

M175

1

2

−

20 (

−

4)

16.00

−

10 (14)

9.62

0 (32) 

6.00

10 (50)

3.87

20 (68)

2.57

25 (77)

2.12

30 (86)

1.76

40 (104)

1.23

HAC-84

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B24A6 IN-VEHICLE SENSOR

B24A6 IN-VEHICLE SENSOR

DTC Description

INFOID:0000000010939741

DTC DETECTION LOGIC 

POSSIBLE CAUSE

[CIRCUIT SHORT TO GROUND]

• In-vehicle sensor
• A/C auto amp.
• Harness or connectors (The sensor circuit is shorted to ground.)

[CIRC SHORT TO BATT OR OPEN]

• In-vehicle sensor
• A/C auto amp.
• Harness or connectors (The sensor circuit is open or shorted to battery.)

FAIL-SAFE

—

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-84, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010939742

1.

CHECK IN-VEHICLE SENSOR SIGNAL

1.

Turn ignition switch ON.

2.

Check voltage between A/C auto amp. harness connector and ground

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B24A6

IN-VEHICLE SENSOR
(In-vehicle sensor)

[CIRCUIT SHORT TO GROUND]

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

−

44

°

C (

−

47

°

F)].

[CIRC SHORT TO BATT OR OPEN]

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

°

C (212

°

F)].

B24A6 IN-VEHICLE SENSOR

HAC-85

< 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

>> GO TO 7.

NO

>> GO TO 2.

2.

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 3.

NO

>> GO TO 5.

3.

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?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK IN-VEHICLE SENSOR

Check in-vehicle sensor. Refer to 

HAC-86, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-126, "Removal and Installation"

.

NO

>> Replace in-vehicle sensor. Refer to 

HAC-128, "Removal and Installation"

.

5.

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. 

+

−

Condition

Voltage

A/C auto amp.

Connector

Terminal

M174

53

Ground

Sensor detection 
temperature

−

20

°

C (

−

4

°

F)

3.09 V

−

10

°

C (14

°

F)

2.46 V

0

°

C (32

°

F)

1.89 V

10

°

C (50

°

F)

1.41 V

20

°

C (68

°

F)

1.03 V

25

°

C (77

°

F)

0.88 V

30

°

C (86

°

F)

0.75 V

40

°

C (104

°

F)

0.55 V

+

−

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

M174

63

Existed

HAC-86

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B24A6 IN-VEHICLE SENSOR

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair harness or connector.

6.

CHECK IN-VEHICLE SENSOR POWER SUPPLY CIRCUIT FOR SHORT

1.

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

2.

Check voltage between in-vehicle harness connector and ground

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-126, "Removal and Installation"

.

NO

>> Repair harness or connector.

7.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-44, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-126, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning parts.

Component Inspection

INFOID:0000000010939743

1.

CHECK IN-VEHICLE SENSOR

1.

Remove in-vehicle sensor. Refer to 

HAC-128, "Removal and Installation"

.

2.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace in-vehicle sensor. Refer to 

HAC-128, "Removal and Installation"

.

In-vehicle sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M41

1

M174

53

Existed

In-vehicle sensor

—

Continuity

Connector

Terminal

M41

1

Ground

Not existed

+

−

Voltage

In-vehicle sensor

Connector

Terminal

M41

1

Ground

0 V

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