Infiniti G35 (V35). Manual — part 94

TROUBLE DIAGNOSIS

ATC-47

C

D

E

F

G

H

I

K

L

M

A

B

ATC

TJWM0144E

ATC-48

TROUBLE DIAGNOSIS

Auto Amp. Terminals and Reference Value

NJS0003A

Measure voltage between each terminal and ground by referring ter-
minals and reference value for display and A/C auto amp.

PIN CONNECTOR TERMINAL LAYOUT

TERMINALS AND REFERENCE VALUE FOR DISPLAY AND A/C AUTO AMP.

RJIA3582E

RJIA3481E

Terminal

No.

Wire

color

Item

Ignition

switch

Condition

Voltage

(V)

1

R/L

Power supply for illumination

ON

Lighting switch: ON

Approx. 12

Lighting switch: OFF

Approx. 0

2

Y/G

Power supply from IGN

ON

—

Battery voltage

3

R/W

Power supply from BAT

OFF

—

Battery voltage

5

B

Ground

ON

—

Approx. 0

9

BR/R

Blower motor ON signal

ON

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

Approx. 0

OFF switch: ON
(A/C system: OFF)

Approx. 5

11

R/W

Compressor feedback signal
(Low-pressure cut)

ON

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

Approx. 0

A/C switch: ON
(When refrigerant pressure
sensor connector is discon-
nected.)

Approx. 5

12

G/B

A/C LAN signal

ON

—

SJIA1453J

TROUBLE DIAGNOSIS

ATC-49

C

D

E

F

G

H

I

K

L

M

A

B

ATC

14

G

Multiplex communication
(RX) signal
(A/C and audio controller

→

Display and A/C auto amp.)

ON

—

15

L/W

Multiplex communication
(TX) signal
(Display and A/C auto amp.

→

A/C and audio controller)

ON

—

17

W/G

Vehicle speed signal

ON

Speedometer operated
[When vehicle speed is
approx. 40 km/h (25 MPH)]

18

BR/R

In-vehicle sensor

—

—

—

19

Y/G

Ambient sensor

—

—

—

20

P/L

Intake sensor

—

—

—

21

R/Y

Illumination ground

ON

—

Approx. 0

23

LG

Power supply from ACC

ACC

—

Battery voltage

25

G

Blower motor control signal

ON

Blower speed: 1st speed
(manual)

27

W/B

ECV (Electronic Control
Valve) signal

ON

Self-diagnosis: STEP-4 (Code
No. 45)

29

Y/R

Power supply for each door
motor

ON

—

Battery voltage

31

G/Y

Compressor ON signal

ON

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

Approx. 0

OFF switch: ON
(A/C system: OFF)

Approx. 5

Terminal

No.

Wire

color

Item

Ignition

switch

Condition

Voltage

(V)

RJIA0213E

RJIA0212E

SJIA1476J

SJIA1454J

SJIA1523J

ATC-50

TROUBLE DIAGNOSIS

34

L/Y

Illumination control signal

ON

—

35

Y

Multiplex communication
(CLK) signal

ON

—

36

B

Changeover

°

C/

°

F (For Can-

ada)

—

—

Approx. 0

37

L/B

Engine coolant temperature
sensor signal

ON

At idle [after warming up,
approx. 80

°

C (176

°

F)]

NOTE:
The waveforms vary depend-
ing on coolant temperature.

39

LG

Sunload sensor

—

—

—

40

W/G

Sensor ground

ON

—

Approx. 0

Terminal

No.

Wire

color

Item

Ignition

switch

Condition

Voltage

(V)

SJIA1835E

SJIA1479J

SJIA1480J