Nissan Pathfinder (2005 year). Instruction — part 59
TROUBLE DIAGNOSIS
ATC-119
C
D
E
F
G
H
I
K
L
M
A
B
ATC
2005 Pathfinder
COMPONENT INSPECTION
In-vehicle Sensor
After disconnecting in-vehicle sensor connector M32, measure resis-
tance between terminals 1 and 4 at sensor component side, using
the table below.
If NG, replace in-vehicle sensor.
Temperature
°
C (
°
F)
Resistance k
Ω
−
15 (5)
21.40
−
10 (14)
16.15
−
5 (23)
12.29
0 (32)
9.41
5 (41)
7.27
10 (50)
5.66
15 (59)
4.45
20 (68)
3.51
25 (77)
2.79
30 (86)
2.24
35 (95)
1.80
40 (104)
1.45
45 (113)
1.18
WJIA1150E
ATC-120
TROUBLE DIAGNOSIS
2005 Pathfinder
Optical Sensor Circuit
EJS002XJ
COMPONENT DESCRIPTION
The optical sensor is located in the center of the defroster grille. It
detects sunload entering through windshield by means of a photo
diode. The sensor converts the sunload into a current value which is
then input into the front air control.
OPTICAL INPUT PROCESS
The front air control includes a processing circuit which averages the variations in detected sunload over a
period of time. This prevents adjustments in the ATC system operation due to small or quick variations in
detected sunload.
For example, consider driving along a road bordered by an occasional group of large trees. The sunload
detected by the optical sensor will vary whenever the trees obstruct the sunlight. The processing circuit aver-
ages the detected sunload over a period of time, so that the (insignificant) effect of the trees momentarily
obstructing the sunlight does not cause any change in the ATC system operation. On the other hand, shortly
after entering a long tunnel, the system will recognize the change in sunload, and the system will react accord-
ingly.
DIAGNOSTIC PROCEDURE FOR OPTICAL SENSOR
SYMPTOM: Optical sensor circuit is open or shorted. (44 or 46 is
indicated on front air control as a result of conducting self-diagnosis).
1.
CHECK CIRCUIT CONTINUITY BETWEEN OPTICAL SENSOR AND FRONT AIR CONTROL
1.
Turn ignition switch OFF.
2.
Disconnect front air control connector and optical sensor con-
nector.
3.
Check continuity between optical sensor harness connector
M145 terminal 1 and 2 and front air control harness connector
M50 terminal 37 and 29.
4.
Check continuity between optical sensor harness connector
M145 terminal 1 and 2 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair harness or connector.
WJIA1466E
WJIA1152E
1 - 37
: Continuity should exist.
2 - 29
: Continuity should exist.
1, 2 - Ground.
: Continuity should not exist.
WJIA1153E
TROUBLE DIAGNOSIS
ATC-121
C
D
E
F
G
H
I
K
L
M
A
B
ATC
2005 Pathfinder
2.
CHECK CIRCUIT CONTINUITY BETWEEN OPTICAL SENSOR AND BCM
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector and optical sensor connector.
3.
Check continuity between optical sensor harness connector
M145 terminal 3 and BCM harness connector M18 terminal 18.
4.
Check continuity between optical sensor harness connector
M145 terminal 3 and ground.
OK or NG
OK
>> Replace optical sensor. Refer to
.
NG
>> Repair harness or connector.
3 - 18
: Continuity should exist.
3 - Ground
: Continuity should not exist.
WJIA1154E
ATC-122
TROUBLE DIAGNOSIS
2005 Pathfinder
Intake Sensor Circuit
EJS002XK
COMPONENT DESCRIPTION
Intake Sensor
The intake sensor is located on the heater & cooling unit. It converts
temperature of air after it passes through the evaporator into a resis-
tance value which is then input to the front air control.
DIAGNOSTIC PROCEDURE FOR INTAKE SENSOR
SYMPTOM: Intake sensor circuit is open or shorted. (56 or 57 is indi-
cated on front air control as a result of conducting Self-diagnosis.)
1.
CHECK VOLTAGE BETWEEN INTAKE SENSOR AND GROUND
1.
Disconnect intake sensor connector.
2.
Turn ignition switch ON.
3.
Check voltage between intake sensor harness connector M146
terminal 2 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 4.
2.
CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND FRONT AIR CONTROL
1.
Turn ignition switch OFF.
2.
Disconnect front air control connector.
3.
Check continuity between intake sensor harness connector
M146 terminal 1 and front air control harness connector M49 ter-
minal 13.
OK or NG
OK
>> GO TO 3.
NG
>> Repair harness or connector.
WJIA1155E
WJIA1156E
2 - Ground
: Approx. 5V
WJIA1278E
1 - 13
: Continuity should exist.
WJIA1157E
TROUBLE DIAGNOSIS
ATC-123
C
D
E
F
G
H
I
K
L
M
A
B
ATC
2005 Pathfinder
3.
CHECK INTAKE SENSOR
Refer to
.
OK or NG
OK
>> 1. Replace front air control. Refer to
.
2. Go to self-diagnosis
ATC-50, "A/C System Self-diagnosis Function"
and perform self-diagno-
sis.
NG
>> 1. Replace intake sensor. Refer to
.
2. Go to self-diagnosis
ATC-50, "A/C System Self-diagnosis Function"
and perform self-diagno-
sis.
4.
CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND FRONT AIR CONTROL
1.
Turn ignition switch OFF.
2.
Disconnect front air control connector.
3.
Check continuity between intake sensor harness connector
M146 terminal 2 and front air control harness connector M49 ter-
minal 12.
4.
Check continuity between intake sensor harness connector
M146 terminal 2 and ground.
OK or NG
OK
>> 1. Replace front air control. Refer to
.
2. Go to self-diagnosis
ATC-50, "A/C System Self-diagnosis Function"
and perform self-diagno-
sis.
NG
>> Repair harness or connector.
COMPONENT INSPECTION
Intake Sensor
After disconnecting intake sensor connector, measure resistance
between terminals 1 and 2 at sensor harness side, using the table
below.
If NG, replace intake sensor.
2 - 12
: Continuity should exist.
2 - Ground
: Continuity should not exist.
WJIA1158E
Temperature
°
C (
°
F)
Resistance k
Ω
−
15 (5)
209.0
−
10 (14)
160.0
−
5 (23)
123.0
0 (32)
95.8
5 (41)
74.9
10 (50)
58.9
15 (59)
46.7
20 (68)
37.3
25 (77)
30.0
30 (86)
24.2
35 (95)
19.7
40 (104)
16.1
45 (113)
13.2
WJIA1159E
ATC-124
CONTROL UNIT
2005 Pathfinder
CONTROL UNIT
PFP:27500
Removal and Installation
EJS002XL
FRONT AIR CONTROL
Removal
1.
Remove cluster lid C. Refer to
.
2.
Remove the four screws securing the front air control to cluster
lid C.
3.
Remove the front air control.
Installation
Installation is in the reverse order of removal.
REAR AIR CONTROL
Removal
1.
Remove the rear finisher assembly from the back of the center console. Refer to
.
2.
Remove the four screws and remove the rear air control.
Installation
Installation is in the reverse order of removal.
LBIA0416E
LBIA0417E
AMBIENT SENSOR
ATC-125
C
D
E
F
G
H
I
K
L
M
A
B
ATC
2005 Pathfinder
AMBIENT SENSOR
PFP:27722
Removal and Installation
EJS002XM
REMOVAL
1.
Remove the front grille. Refer to
.
2.
Disconnect the ambient sensor - 1 electrical connector.
NOTE:
The ambient sensor - 1 is located behind the front bumper, in
front of the condenser.
3.
Release the ambient sensor - 1 clip and then remove the ambi-
ent sensor - 1.
INSTALLATION
Installation is in the reverse order of removal.
LJIA0166E
ATC-126
IN-VEHICLE SENSOR
2005 Pathfinder
IN-VEHICLE SENSOR
PFP:27720
Removal and Installation
EJS002XN
REMOVAL
1.
Remove the cluster lid D. Refer to
.
2.
Remove the two screws and remove the in-vehicle sensor.
INSTALLATION
Installation is in the reverse order of removal.
WJIA1073E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст