Nissan Tiida C11. Manual - part 868

HAC-136

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

SUNLOAD SENSOR

SUNLOAD SENSOR

System Description

INFOID:0000000001547443

COMPONENT DESCRIPTION

Sunload Sensor

The sunload sensor (1) is located on the instrument upper mask. It
detects sunload entering through windshield by means of a photo
diode. The sensor converts the sunload into a current value which is
then input into the front air control.

SUNLOAD INPUT PROCESS

The front air control also includes a processing circuit which averages the variations in detected sunload over
a period of time. This prevents drastic swings in the ATC system operation due to small or quick variations in
detected sunload.
For example, consider driving along a road bordered by an occasional group of large trees. The sunload
detected by the sunload sensor will vary whenever the trees obstruct the sunlight. The processing circuit aver-
ages the detected sunload over a period of time, so that the (insignificant) effect of the trees momentarily
obstructing the sunlight does not cause any change in the ATC system operation. On the other hand, shortly
after entering a long tunnel, the system will recognize the change in sunload, and the system will react accord-
ingly.

Sunload Sensor Diagnosis Procedure

INFOID:0000000001547442

DIAGNOSTIC PROCEDURE FOR SUNLOAD SENSOR

SYMPTOM: Sunload sensor circuit is open or shorted. (25 or 

AUTO

25

is indicated on front air control as a result of performing self-diagno-
sis STEP-2.)

1.

CHECK VOLTAGE BETWEEN SUNLOAD SENSOR AND GROUND

1.

Turn ignition switch OFF.

2.

Disconnect sunload sensor connector M94.

3.

Turn ignition switch ON.

4.

Check voltage between sunload sensor harness connector M94
terminal 1 and ground.

Is the inspection result normal?

SJIA0819E

AWIIA0312GB

Terminals

Voltage

(Approx.)

(+)

(

−

)

Connector

Terminal 

Ground

Sunload sensor: M94

1

5V

SJIA0821E

SUNLOAD SENSOR

HAC-137

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK CIRCUIT CONTINUITY BETWEEN SUNLOAD SENSOR AND FRONT AIR CONTROL

1.

Turn ignition switch OFF.

2.

Disconnect front air control connector M51.

3.

Check continuity between sunload sensor harness connector
M94 (A) terminal 2 and front air control harness connector M51
(B) terminal 33.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK SUNLOAD SENSOR

Refer to 

HAC-137, "Sunload Component Inspection"

.

Is the inspection result normal?

YES

>> 1.

Replace front air control. Refer to XX.

2.

Go to self-diagnosis 

HAC-98, "Front Air Control Self-Diagnosis"

 and perform self-diagnosis

STEP-2. Confirm that code No. 20 is displayed.

NO

>> 1.

Replace sunload sensor. Refer to XX.

2.

Go to self-diagnosis 

HAC-98, "Front Air Control Self-Diagnosis"

 and perform self-diagnosis

STEP-2. Confirm that code No. 20 is displayed.

4.

CHECK CIRCUIT CONTINUITY BETWEEN SUNLOAD SENSOR AND FRONT AIR CONTROL

1.

Turn ignition switch OFF.

2.

Disconnect front air control connector M51.

3.

Check continuity between sunload sensor harness connector
M94 (B) terminal 1 and front air control harness connector M51
(B) terminal 31.

4.

Check continuity between sunload sensor harness connector
M94 (A) terminal 1 and ground.

Is the inspection result normal?

YES

>> 1.

Replace front air control. Refer to XX.

2.

Go to self-diagnosis 

HAC-98, "Front Air Control Self-Diagnosis"

 and perform self-diagnosis

STEP-2. Confirm that code No. 20 is displayed.

NO

>> Repair harness or connector.

Sunload Component Inspection

INFOID:0000000001569485

COMPONENT INSPECTION

Sunload Sensor

A

B

Continuity

Connector

Terminal

Connector

Terminal

Sunload sensor: M94

2

Front air con-

trol: M51

33

Yes

SJIA0822E

A

B

Continuity

Connector

Terminal

Connector

Terminal

Sunload sensor: M94

1

Front air con-

trol: M51

31

Yes

A

Ground

Continuity

Connector

Terminal

Sunload sensor: M94

1

No

SJIA0823E

HAC-138

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

SUNLOAD SENSOR

Measure voltage between front air control harness connector M51
terminal 31 and ground.
If NG, replace sunload sensor. Refer to XX.

• When checking sunload sensor, select a place where sun shines directly on it.

SJIA0847E

SHA930E

INTAKE SENSOR

HAC-139

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

INTAKE SENSOR

Component Inspection

INFOID:0000000001572418

COMPONENT DESCRIPTION

Intake Sensor

The intake sensor (1) is located on the A/C unit. It converts tempera-
ture of air after it passes through the evaporator (2) into a resistance
value which is then input to the front air control.

Intake Sensor Diagnosis Procedure

INFOID:0000000001547444

DIAGNOSTIC PROCEDURE FOR INTAKE SENSOR

SYMPTOM: Intake sensor circuit is open or shorted. (24 or 

AUTO

24 is

indicated on front air control as a result of performing self-diagnosis
STEP-2.)

1.

CHECK VOLTAGE BETWEEN INTAKE SENSOR AND GROUND

1.

Turn ignition switch OFF.

2.

Disconnect intake sensor connector M92.

3.

Turn ignition switch ON.

4.

Check voltage between intake sensor harness connector M92
terminal 1 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND FRONT AIR CONTROL

ZJIA0798J

AWIIA0313GB

Terminals

Voltage

(Approx.)

(+)

(

−

)

Connector

Terminal 

Ground

Intake sensor: M92

1

5V

SJIA0825E