Nissan Xterra. Instruction — part 461
HAC-42
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONER]
POWER SUPPLY AND GROUND CIRCUIT FOR CONTROLLER
SYMPTOM: A/C system does not come on.
1.
CHECK POWER SUPPLY CIRCUITS FOR FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector.
3. Turn ignition switch ON.
4. Check voltage between front air control harness connectors M50 terminal 15 and M2 terminal 27, and
ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Check 10A fuses [Nos. 8 and 19, located in the fuse block (J/B)]. Refer to
.
• If fuses are OK, check harness for open circuit. Repair or replace as necessary.
• If fuses are NG, replace fuse and check harness for short circuit. Repair or replace as neces-
sary.
2.
CHECK GROUND CIRCUIT FOR FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Check continuity between front air control harness connector M2 terminal 35 and ground.
Is the inspection result normal?
YES
>> Replace front air control. Refer to
VTL-7, "Removal and Installation"
.
NO
>> Repair harness or connector.
AWIIA1786GB
Terminals
Ignition switch position
(+)
(-)
OFF
ACC
ON
Front air
control
connector
Terminal No.
M50
15
Ground
Approx. 0V
Approx. 0V
Battery
voltage
M2
27
Battery
voltage
Battery
voltage
Battery
voltage
35 - Ground
: Continuity should exist.
AIR CONDITIONER CONTROL
HAC-43
< ECU DIAGNOSIS INFORMATION >
[MANUAL AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
ECU DIAGNOSIS INFORMATION
AIR CONDITIONER CONTROL
Front Air Control Terminals Reference Values
INFOID:0000000009482491
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
AWIIA1217ZZ
AWIIA0441ZZ
Terminal
No.
Wire
color
Item
Ignition
switch
Condition
Voltage (V)
(Approx.)
3
P
Ground for mode door motor and air
mix door motor PBR
ON
-
0V
4
W
Compressor ON signal
ON
A/C switch OFF
5V
ON
A/C switch ON
0V
5
R
Front blower monitor
ON
Front blower motor OFF
Battery voltage
Front blower motor ON
0V
6
SB
Air mix door motor feedback
ON
-
0 - 5V
8
G
Illumination +
ON
Park lamps ON
Battery voltage
9
BR
Illumination -
-
Park lamps ON
10
V
Mode door motor feedback
ON
-
0 - 5V
11
L
Intake sensor
ON
-
0 - 5V
13
LG
Variable blower control
ON
Blower speed (low)
1.7V
Blower speed (hi)
4.5V
15
W/G
Power supply for IGN
ON
-
Battery voltage
16
Y
Rear defroster request
ON
-
Battery voltage
PIIA2344E
HAC-44
< ECU DIAGNOSIS INFORMATION >
[MANUAL AIR CONDITIONER]
AIR CONDITIONER CONTROL
17
GR
Air mix door motor CCW
ON
Counterclockwise rotation
Battery voltage
18
BG
Air mix door motor CW
ON
Clockwise rotation
Battery voltage
21
BG
Intake door motor CCW
ON
Counterclockwise rotation
Battery voltage
22
Y
Intake door motor CW
ON
Clockwise rotation
Battery voltage
23
R
Mode door motor CCW
ON
Counterclockwise rotation
Battery voltage
24
BR
Mode door motor CW
ON
Clockwise rotation
Battery voltage
26
V
Sensor ground
ON
-
0V
27
R/Y
Power supply for BAT
-
-
Battery voltage
28
G
Power supply for mode door motor
and air mix door motor PBR
ON
-
5V
35
B
Ground
-
-
0V
36
P
CAN-L
ON
-
0 - 5V
37
L
CAN-H
ON
-
0 - 5V
Terminal
No.
Wire
color
Item
Ignition
switch
Condition
Voltage (V)
(Approx.)
AIR CONDITIONER CONTROL
HAC-45
< WIRING DIAGRAM >
[MANUAL AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
WIRING DIAGRAM
AIR CONDITIONER CONTROL
Wiring Diagram
INFOID:0000000009482492
ABIWA0372GB
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