Nissan X-Trail 32. Manual - part 1403

B24A9 SUNLOAD SENSOR

HAC-87

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

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HAC

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B24A9 SUNLOAD SENSOR

DTC Description

INFOID:0000000010939744

DTC DETECTION LOGIC 

NOTE:
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.

POSSIBLE CAUSE

[CIRCUIT SHORT TO GROUND]

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

[CIRC SHORT TO BATT OR OPEN]

• Sunload 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-87, "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:0000000010939745

1.

CHECK SUNLOAD 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

B24A9

SUNLOAD SENSOR
(Sunload sensor)

[CIRCUIT SHORT TO GROUND]

Detected calorie at sunload sensor 950 W/m

2

 (817 

kcal/m

2

·h) or more.

[CIRC SHORT TO BATT OR OPEN]

Detected calorie at sunload sensor 50 W/m

2

 (43 

kcal/m

2

·h) or less.

HAC-88

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B24A9 SUNLOAD SENSOR

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 2.

2.

CHECK SUNLOAD SENSOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect sunload sensor connector. 

3.

Turn ignition switch ON.

4.

Check voltage between sunload sensor harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

CHECK SUNLOAD SENSOR GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect 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 4.

NO

>> Repair harness or connector.

4.

REPLACE SUNLOAD SENSOR

1.

Replace sunload sensor. Refer to 

HAC-129, "Removal and Installation"

.

2.

Perform DTC confirmation procedure. Refer to 

HAC-56, "DTC Index"

.

3.

Check DTC.

Is DTC detected?

YES

>> Replace A/C auto amp. Refer to 

HAC-126, "Removal and Installation"

.

NO

>> INSPECTION END

5.

CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector. 

3.

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

+

−

Condition

Voltage

A/C auto amp.

Connector

Terminal

M174

54

Ground

Sensor detection 
sunload amount

0 W/m

2

5.00 V

200 W/m

2

4.46 V

400 W/m

2

3.92 V

600 W/m

2

3.39 V

800 W/m

2

2.85 V

1000 W/m

2

2.25 V

+

−

Voltage

(Approx.)

Sunload sensor

Connector

Terminal

M74

1

Ground

5 V

Sunload sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M74

2

M174

63

Existed

B24A9 SUNLOAD SENSOR

HAC-89

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

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Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair harness or connector.

6.

CHECK SUNLOAD SENSOR POWER SUPPLY CIRCUIT FOR SHORT

1.

Check continuity between sunload 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.

Sunload sensor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M74

1

M174

54

Existed

Sunload sensor

—

Continuity

Connector

Terminal

M74

1

Ground

Not existed

+

−

Voltage

Sunload sensor

Connector

Terminal

M74

1

Ground

0 V

HAC-90

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B24B4 A/C CONTROL

B24B4 A/C CONTROL

DTC Description

INFOID:0000000010939746

DTC DETECTION LOGIC

POSSIBLE CAUSE

A/C control (Internal circuit malfunction) 

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

1.

PERFORM SELF-DIAGNOSIS

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-90, "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:0000000010939747

1.

REPLACE A/C CONTROL

Replace A/C control. Refer to 

HAC-125, "Removal and Installation"

.

>> INSPECTION END

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B24B4

A/C CONTROL
(Air conditioning control)

[GENERAL ELEC MALFUNCTN]

An internal circuit error message is received from A/C 
control via LIN communication for 30 seconds or more.