Infiniti M45 (Y34). Manual — part 140
TROUBLE DIAGNOSIS
ATC-45
C
D
E
F
G
H
I
K
L
M
A
B
ATC
WITH NAVIGATION SYSTEM
TJWA0046E
ATC-46
TROUBLE DIAGNOSIS
WITHOUT NAVIGATION SYSTEM
TJWA0047E
TROUBLE DIAGNOSIS
ATC-47
C
D
E
F
G
H
I
K
L
M
A
B
ATC
Auto Amp. Terminals and Reference Value
AJS000C5
Measure voltage between each terminal and ground by following ter-
minals and reference value for auto amp.
PIN CONNECTOR TERMINAL LAYOUT
TERMINALS AND REFERENCE VALUE FOR AUTO AMP.
RJIA0210E
RJIA0211E
Terminal
No.
Wire
color
Item
Ignition
switch
Condition
Voltage
(V)
1
G/OR
Intake sensor
-
-
-
2
G/W
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
7
GY/L
Power supply for ACC
ACC or
ON
-
Battery voltage
9
L/W
Multiplex communication
signal (TX)
ON
-
10
L
Multiplex communication
signal (RX)
ON
-
ELF1080D
RJIA0212E
RJIA0213E
ATC-48
TROUBLE DIAGNOSIS
11
R/Y
Sensor ground
ON
-
Approx. 0
12
SB
Sunload sensor
-
-
-
17
L/OR
Water temperature sen-
sor
-
At idle [after warming up, approx.
80
°
C (176
°
F)]
CAUTION:
The waveforms vary depending
on coolant temperature.
18
OR
Compressor feed back
signal (Low-pressure cut)
ON
AUTO
switch: ON
(Compres-
sor: ON)
Blower motor operates.
Approx. 0
When the refrigerant
pressure sensor con-
nector is disconnected
Approx. 5
20
L/R
Multiplex communication
signal (CLK)
ON
-
21
GY
Power supply for mode
door motor, air mix door
motor, intake door motor
ON
-
Approx. 12
22
Y/B
Compressor ON signal
ON
AUTO switch: ON
Approx. 0
OFF switch: ON (A/C system OFF)
Approx. 5
23
G
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
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
35
L/OR
Blower motor drive signal
ON
Blower speed: 1st speed
Terminal
No.
Wire
color
Item
Ignition
switch
Condition
Voltage
(V)
PKIA0098J
HAK0363D
RJIA1563E
SJIA0116J
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