Nissan Tiida C11. Manual - part 875

HAC-164

< COMPONENT DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

POWER SUPPLY AND GROUND CIRCUIT FOR CONTROLLER

1.

CHECK POWER SUPPLY CIRCUIT FOR FRONT AIR CONTROL

1.

Turn ignition switch OFF.

2.

Disconnect front air control connector M50.

3.

Check voltage between front air control harness connector M50
terminal 1, 7, 17 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>>

Check 10A fuses [Nos. 2, 13 and 16, located in the fuse block (J/B)].

• If fuses are OK, check harness for open circuit. Repair or replace if necessary.
• If fuses are NG, replace fuse and check harness for short circuit. Repair or replace if necessary.

2.

CHECK GROUND CIRCUIT FOR FRONT AIR CONTROL

1.

Turn ignition switch OFF.

2.

Check continuity between front air control harness connector
M50 terminal 10 and ground.

Is the inspection result normal?

YES

>> Replace front air control. Refer to XX.

NO

>> Repair or replace harness.

Terminals

Ignition switch position

(+)

(-)

OFF

ACC

ON

Connector

Terminal 

Front air control: 

M50

1

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

7

Approx. 

0V

Approx. 

0V

Battery 
voltage

17

Approx. 

0V

Approx. 

0V

Battery 
voltage

SJIA0786E

Connector

Terminal

Ground

Continuity

Front air control: 

M50

10

Yes

SJIA0787E

AIR CONDITIONER CONTROL

HAC-165

< ECU DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

ECU DIAGNOSIS

AIR CONDITIONER CONTROL

Front Air Control Terminals Reference Values

INFOID:0000000001547449

Measure voltage between each terminal and ground by following terminals and reference value for front air
control.

PIN CONNECTOR TERMINAL LAYOUT

TERMINALS AND REFERENCE VALUE FOR FRONT AIR CONTROL

AWIIA0502ZZ

Terminal

No.

Wire

color

Item

Ignition

switch

Condition

Voltage

(V)

1

LG

Power supply for BAT

OFF

-

Battery voltage

3

R

Power supply for intake door 
PBR (5V output)

ON

-

Approx. 5

4

BR

Engine coolant temperature 
sensor signal

ON

At idle (after warming up, ap-
prox. 80

°

C)

CAUTION:

The wave forms vary de-
pending on coolant tempera-
ture.

5

B

Illumination ground

ON

-

Approx. 0

7

R

Power supply for IGN 2

OFF

-

Battery voltage

9

V

PTC Heater ON/OFF signal

ON

Full Hot switch ON

Approx. 12

10

B

Ground

ON

-

Approx. 0

12

P

Blower motor ON signal

ON

FAN speed: 1st step (manual)

13

O

Compressor ON signal

ON

A/C switch: ON
(Blower motor operates.)

SKIB3651J

ZJIA0583J

ZJIA0584J

HAC-166

< ECU DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

AIR CONDITIONER CONTROL

14

W

Rear window defogger ON 
signal

ON

When rear window defogger 
switch is depressed.

Approx. 0

When rear window defogger 
switch is released.

Approx. 5

15

GR

Blower PWM

ON

Blower motor speed: 1st step 
(manual)

16

GR

Illumination signal

ON

Light switch: ON

Approx. 12

Light switch: OFF

Approx. 0

17

O

Power supply for IGN 1

ON

-

Battery voltage

19

BR

Air mix door motor drive sig-
nal

ON

Immediately after temperature 
adjustment switch operation

20

G

21

LG

22

R

23

GR

Mode door motor drive signal

ON

Immediately after mode switch 
operation

24

W

25

Y

26

V

27

G

Intake door motor drive sig-
nal

ON

REC or 
FRE switch

REC

→

FRE

Approx. 0

FRE

→

REC

Approx. 12

28

LG

In-vehicle sensor

-

-

-

29

O

Intake sensor

-

-

-

30

SB

Ambient sensor

-

-

-

31

P

Sunload sensor

-

-

-

32

R

Rear window defogger feed-
back signal

ON

Rear window defogger: ON

Approx. 12

Rear window defogger: OFF

Approx. 0

33

BR

Sensor ground

ON

-

Approx. 0

34

L

Gas sensor signal

ON

-

Approx. 0.5 - 5

35

SB

Intake door motor feedback 
signal

ON

REC position

Approx. 5

FRE position

Approx. 0

36

V

Intake door motor drive sig-
nal

ON

REC or 
FRE switch

REC

→

FRE

Approx. 12

FRE

→

REC

Approx. 0

Terminal

No.

Wire

color

Item

Ignition

switch

Condition

Voltage

(V)

ZJIA0863J

HAK0627D

HAK0627D

AIR CONDITIONER CONTROL

HAC-167

< ECU DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Wiring Diagram - Air Conditioner Control -

INFOID:0000000001547450

ALIWA0036GB