Nissan Tiida C11. Manual - part 866

HAC-128

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

MAGNET CLUTCH

Is the inspection result normal?

YES

>> GO TO 13.

NO

>> GO TO 11.

11.

CHECK CIRCUIT CONTINUITY BETWEEN FRONT AIR CONTROL AND BCM

1.

Turn ignition switch OFF.

2.

Disconnect front air control connector M50 and BCM connector
M19.

3.

Check continuity between front air control harness connector
M50 (A) terminal 12 and BCM harness connector M19 (B) termi-
nal 50.

4.

Check continuity between front air control harness connector M50 (A) terminal 12 and ground.

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> Repair harness or connector.

12.

CHECK VOLTAGE FOR FRONT AIR CONTROL (FAN ON SIGNAL)

1.

Reconnect front air control connector M50 and BCM connector
M18.

2.

Turn ignition switch ON.

3.

Confirm fan ON signal between front air control harness connec-
tor M50 terminal 12 and ground using oscilloscope.

Is the inspection result normal?

YES

>> Replace front air control. Refer to XX.

NO

>> Replace BCM. Refer to XX.

13.

CHECK CAN COMMUNICATION

Check CAN communication. Refer to 

XX-XX, "*****"

.

• BCM  –  ECM

FAN SW ON

: FAN ON SIG ON

FAN SW OFF

: FAN ON SIG OFF

A

B

Continuity

Connector

Terminal

Connector

Terminal

Front air control: 

M50

12

BCM: M19

50

Yes

A

Ground

Continuity

Connector

Terminal

Front air control: 

M50

12

No

AWIIA0566ZZ

Terminals

Condition

Voltage

(Approx.)

(+)

(

−

)

Connec-
tor

Terminal 

Ground

Front air 

control: 

M50

12

Fan speed: 

1st

SJIA0946E

ZJIA0583J

MAGNET CLUTCH

HAC-129

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

• ECM – IPDM E/R

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace malfunction part(s).

HAC-130

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

AMBIENT SENSOR

AMBIENT SENSOR

Component Description

INFOID:0000000001547435

COMPONENT DESCRIPTION

Ambient Sensor

The ambient sensor is attached on the radiator core support upper. It
detects ambient temperature and converts it into a resistance value
which is then input into the front air control.

AMBIENT TEMPERATURE INPUT PROCESS

The front air control includes a processing circuit for the ambient sensor input. However, when the tempera-
ture detected by the ambient sensor increases quickly, the processing circuit retards the front air control func-
tion. It only allows the front air control to recognize an ambient temperature increase of 0.33

°

C (0.6

°

F) per 100

seconds.
As an example, consider stopping for a few minutes after high speed driving. Although the actual ambient tem-
perature has not changed, the temperature detected by the ambient sensor will increase. This is because the
heat from the engine compartment can radiate to the front grille area, location of the ambient sensor.

Ambient Sensor Diagnosis Procedure

INFOID:0000000001547436

DIAGNOSTIC PROCEDURE FOR AMBIENT SENSOR

SYMPTOM: Ambient sensor circuit is open or shorted. (21 or 

AUTO

21

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

1.

CHECK VOLTAGE BETWEEN AMBIENT SENSOR AND GROUND

1.

Turn ignition switch OFF.

2.

Disconnect ambient sensor connector E60.

3.

Turn ignition switch ON.

4.

Check voltage between ambient sensor harness connector E60
terminal 2 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

AWIIA0600ZZ

AWIIA0306GB

Terminals

Voltage

(Approx.)

(+)

(

−

)

Connector

Terminal 

Ground

Ambient sensor: 

E60

2

5V

AWIIA0307ZZ

AMBIENT SENSOR

HAC-131

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

NO

>> GO TO 4.

2.

CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL 

1.

Turn ignition switch OFF.

2.

Disconnect front air control connector M60.

3.

Check continuity between ambient sensor harness connector
E60 (A) terminal 1 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 AMBIENT SENSOR

Refer to 

HAC-131, "Ambient Sensor 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 ambient 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 AMBIENT SENSOR AND FRONT AIR CONTROL

1.

Turn ignition switch OFF.

2.

Disconnect front air control connector M51.

3.

Check continuity between ambient sensor harness connector
E60 (A) terminal 2 and front air control harness connector M51
(B) terminal 30.

4.

Check continuity between ambient sensor harness connector
E34 (A) terminal 2 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.

Ambient Sensor Component Inspection

INFOID:0000000001547437

COMPONENT INSPECTION

Ambient Sensor

A

B

Continuity

Connector

Terminal

Connector

Terminal

Ambient sensor: 

E60

1

Front air control: 

M51

33

Yes

AWIIA0308ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

Ambient sensor: 

E60

2

Front air control: 

M51

30

Yes

A

Ground

Continuity

Connector

Terminal

Ambient sensor: 

E60

2

No

AWIIA0309ZZ