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