Nissan Pathfinder (2012 year). Manual - part 431
HAC-170
< ECU DIAGNOSIS INFORMATION >
[MANUAL AIR CONDITIONER]
AIR CONDITIONER CONTROL
ECM judges whether compressor can be turned ON, based on each sensor status (refrigerant pressure sen-
sor signal, throttle angle sensor, etc.). If it judges compressor can be turned ON, it sends compressor ON sig-
nal to IPDM E/R, via CAN communication line.
Upon receipt of compressor ON signal from ECM, IPDM E/R turns air conditioner relay ON to operate com-
pressor.
Front Air Control Terminals Reference Values
INFOID:0000000007356449
Measure voltage between each terminal and ground by following
Terminals and Reference Values for front air control.
FRONT AIR CONTROL HARNESS CONNECTOR TERMINAL LAYOUT
TERMINALS AND REFERENCE VALUES FOR FRONT AIR CONTROL
AWIIA1197ZZ
WJIA2011E
Terminal
No.
Wire
color
Item
Ignition
switch
Condition
Voltage (V)
(Approx.)
1
BR
Mode door motor CW
ON
Clockwise rotation
Battery voltage
2
W
Air mix door motor (Driver) CW
ON
Clockwise rotation
Battery voltage
3
GR
Air mix door motor (Driver) CCW
ON
Counterclockwise rotation
Battery voltage
4
Y
Intake door motor CW
ON
Clockwise rotation
Battery voltage
5
O
Intake door motor CCW
ON
Counterclockwise rotation
Battery voltage
6
W/G
Power supply for IGN
ON
-
Battery voltage
8
G
Illumination +
ON
Park lamps ON
Battery voltage
9
BR
Illumination -
-
Park lamps ON
10
W
Compressor ON signal
ON
A/C switch OFF
5V
ON
A/C switch ON
0V
11
Y
Rear defrost request
ON
-
Battery voltage
12
L
Intake sensor
ON
-
0 - 5V
13
V
Sensor ground
ON
-
0 - 5V
14
R
Mode door motor CCW
ON
Counterclockwise rotation
Battery voltage
PIIA2344E
August 2012
2012 Pathfinder