Nissan Titan A60. Manual - part 617

POWER SUPPLY AND GROUND CIRCUIT FOR CONTROLLER

HAC-151

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL A/C (TYPE 1)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

SYMPTOM: A/C system does not come on.

1.

 CHECK POWER SUPPLY CIRCUITS FOR FRONT AIR CONTROL

1. Turn ignition switch ON.

2. Check voltage between front air control harness connector

M180 (B) terminal 15 and M181 (A) terminal 27, and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Check 10A fuses [Nos. 8 and 19, located in the fuse block (J/B)]. Refer to 

PG-72, "Terminal

Arrangement"

.

• If fuses are OK, check harness for open circuit. Repair or replace as necessary.

• If fuses are NG, replace fuse and check harness for short circuit. Repair or replace as neces-

sary.

2.

 CHECK GROUND CIRCUIT FOR FRONT AIR CONTROL

1. Turn ignition switch OFF.

2. Disconnect front air control connectors.

3. Check continuity between front air control harness connector

M181 terminal 35 and ground.

Is the inspection result normal?

OK

>> Replace front air control. Refer to 

VTL-8, "Removal and

Installation"

.

NG

>> Repair harness or connector.

AWIIA0438GB

Terminals

Ignition switch position

(+)

(-)

OFF

ACC

ON

Front air 

control 

connector

Terminal No.

M180

15 

Ground

Approx. 0V

Approx. 0V

Battery 
voltage

M181

27

Battery 
voltage

Battery 
voltage

Battery 
voltage

AWIIA1047ZZ

35 - Ground

: Continuity should exist.

AWIIA0440ZZ

HAC-152

< ECU DIAGNOSIS INFORMATION >

[MANUAL A/C (TYPE 1)]

MANUAL A/C IDENTIFICATION TABLE

ECU DIAGNOSIS INFORMATION

MANUAL A/C IDENTIFICATION TABLE

Application Table

INFOID:0000000006164784

Manual A/C Type

Description

Visual Identification

Manual A/C (Type 1)

Two Control Dial System

Manual A/C (Type 2)

Three Control Dial System 

[with variable blower control 

(VBC)]

AWIIA0481ZZ

AWIIA0478ZZ

AIR CONDITIONER CONTROL

HAC-153

< ECU DIAGNOSIS INFORMATION >

[MANUAL A/C (TYPE 1)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

AIR CONDITIONER CONTROL

Front Air Control Terminals Reference Values

INFOID:0000000006164785

Measure voltage between each terminal and ground by following

Terminals and Reference Value for front air control (1).

FRONT AIR CONTROL HARNESS CONNECTOR TERMINAL LAYOUT

TERMINALS AND REFERENCE VALUES FOR FRONT AIR CONTROL 

AWIIA0436ZZ

AWIIA0441ZZ

Terminal 

No.

Wire 

color

Item

Ignition 

switch

Condition

Voltage (V)

(Approx.)

3

P

V ref ACTR (ground)

ON

-

 5V

4

W/R

Compressor ON signal

ON

A/C switch OFF

5V

ON

A/C switch ON

0V

5

L/R

Fan ON signal

ON

Blower switch OFF

5V

ON

Blower switch ON

0V

6

SB

Air mix door motor feedback

ON

-

0 - 5V

7

GR

Mode door motor feedback

ON

-

0 - 5V

8

R/L

Illumination +

ON

Park lamps ON

Battery voltage

9

BR

Illumination -

-

Park lamps ON

10

LG/B

Defroster door motor feedback

ON

-

0 - 5V

11

L/B

Intake sensor

ON

-

0 - 5V

13

G/R

Variable blower control

ON

-

0 - 5V

15

Y/G

Power supply for IGN

ON

-

Battery voltage

16

Y/B

Rear defogger request *1 

ON

-

Battery voltage

17

W/G

Air mix door motor CW

ON

Clockwise rotation

Battery voltage

18

G

Air mix door motor CCW

ON

Counterclockwise rotation

Battery voltage

PIIA2344E

H

A

C

- 1 5 4

< ECU DIAGNOSIS INFORMATION >

[MANUAL A/C (TYPE 1)]

AIR CONDITIONER CONTROL

*1: If equipped

19

BR/W

Mode door motor CW 

ON

Clockwise rotation

Battery voltage

20

P/L

Mode door motor CCW

ON

Counterclockwise rotation

Battery voltage

21

G/B

Intake door motor CCW

ON

Counterclockwise rotation

Battery voltage

22

O

Intake door motor CW

ON

Clockwise rotation

Battery voltage

23

LG

Defroster door motor CW

ON

Clockwise rotation

Battery voltage

24

P/B

Defroster door motor CCW

ON

 Counterclockwise rotation

Battery voltage

25

P

Ambient sensor

ON

-

0 - 5V

26

V/R

Sensor ground

ON

-

0V

27

Y/R

Power supply for BAT

-

-

Battery voltage

28

Y

V ref ACTR (5V)

ON

-

0 - 5V

35

B

Ground

-

-

0V

36

P

CAN-L

ON

-

0 - 5V

37

L

CAN-H

ON

-

0 - 5V

41

Y/L

Water valve

ON

Water valve open

Battery voltage

Water valve closed

0V

42

W/G

Water valve

ON

Water valve open

0V

Water valve closed

Battery voltage

Terminal 

No.

Wire 

color

Item

Ignition 

switch

Condition

Voltage (V)

(Approx.)