Infiniti F50. Manual - part 131

TROUBLE DIAGNOSIS

ATC-49

C

D

E

F

G

H

I

K

L

M

A

B

ATC

TJWM0034E

ATC-50

TROUBLE DIAGNOSIS

Auto Amp. Terminals and Reference Value

EJS000JJ

Measure voltage between each terminal and ground by following
AUTO AMP. INSPECTION TABLE.

PIN CONNECTOR TERMINAL LAYOUT

TERMINALS AND REFERENCE VALUE FOR AUTO AMP.

RJIA0210E

RJIA0211E

Termi-

nal No.

Wire 

color

Item

Ignition 

switch

CONDITION

Voltage

(V)

1

G/OR

Intake sensor

-

-

-

2

G/R

Ambient sensor

-

-

-

3

LG/B

In-vehicle sensor

-

-

-

4

PU/W

Vehicle speed sensor

ON

Speedometer operated

[When vehicle speed is approx. 

40km/h(25MPH)]

5

G/Y

A/C LAN signal

ON

-

Approx. 5

6

LG

Power supply for rear vent 
door motor

ON

Rear vent SW: ON

Approx. 0

Rear vent SW: OFF

Approx. 12

7

GY/L

Power supply for ACC

ACC or 

ON

-

Battery voltage

9

W

Multiplex communication 
signal (Fr TX) 

ON

-

ELF1080D

RJIA0212E

TROUBLE DIAGNOSIS

ATC-51

C

D

E

F

G

H

I

K

L

M

A

B

ATC

10

R

Multiplex communication 
signal (Fr RX)

ON

-

11

R/Y

Sensor ground

ON

-

Approx. 0

12

SB

Sunload sensor

-

-

-

15

G

Multiplex communication 
signal (Rr RX)

ON

-

16

W/B

Power supply for rear vent 
door motor

ON

Rear vent switch: ON

Approx. 12

Rear vent switch: OFF

Approx. 0

17

L/OR

Water temperature sensor

-

At idle (after warming up, 
approx. 80

°

C)

CAUTION:

The waveforms vary depend-
ing on coolant temperature

18

OR

Compressor feed back sig-
nal (Low-pressure cut)

ON

Compres-
sor: ON 
(Start 
engine)

-

Approx. 0

When refrigerant 
pressure sensor 
connector is dis-
connected.

Approx. 5

20

B

Multiplex communication 
signal (Fr CLK)

ON

-

21

GY

Power supply for mode 
door motor, air mix door 
motor, intake door motor

ON

-

Approx. 12

22

Y

Compressor ON signal

ON

AUTO switch: ON

Approx. 0

AUTO switch: OFF

Approx. 5

23

L/R

ECV (Electronic Control 
Valve) signal

ON

Self-diagnosis: STEP-42

25

B

Ground

ON

-

Approx. 0

26

Y/G

Power supply for BAT

OFF

-

Battery voltage

Termi-

nal No.

Wire 

color

Item

Ignition 

switch

CONDITION

Voltage

(V)

RJIA0213E

RJIA0214E

PKIA0098J

HAK0363D

RJIA1563E

ATC-52

TROUBLE DIAGNOSIS

27

P

Power supply for IGN

ON

-

Battery voltage

29

SB

Blower motor ON signal

ACC or 

ON

AUTO switch: ON (Blower 
motor operates)

Approx. 0

AUTO switch: OFF

Approx. 5

30

BR/W

Multiplex communication 
signal (Rr CLK)

ON

-

31

GY/L

Multiplex communication 
signal (Rr TX)

ON

-

35

L/OR

Blower motor drive signal

ACC or 

ON

Blower speed: 1 speed

Termi-

nal No.

Wire 

color

Item

Ignition 

switch

CONDITION

Voltage

(V)

HAK0364D

RJIA0215E

SJIA0116J