Nissan Pathfinder (2007 year). Manual — part 329
TROUBLE DIAGNOSIS
MTC-79
C
D
E
F
G
H
I
K
L
M
A
B
MTC
2007 Pathfinder
Noise
EJS004RU
SYMPTOM: Noise
INSPECTION FLOW
WJIA1972E
MTC-80
TROUBLE DIAGNOSIS
2007 Pathfinder
*1
*2
*3
ATC-22, "Maintenance of Oil Quan-
tity in Compressor"
*4
ATC-52, "Operational Check (Front)"
*5
TROUBLE DIAGNOSIS
MTC-81
C
D
E
F
G
H
I
K
L
M
A
B
MTC
2007 Pathfinder
Intake Sensor Circuit
EJS004RV
COMPONENT DESCRIPTION
Intake Sensor
The intake sensor is located on top of the heater and cooling unit
assembly next to the A/C evaporator cover. It converts temperature
of air after it passes through the evaporator into a resistance value
which is then input to the front air control.
DIAGNOSTIC PROCEDURE FOR INTAKE SENSOR
SYMPTOM: Intake sensor circuit is open or shorted.
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
MTC-82
TROUBLE DIAGNOSIS
2007 Pathfinder
3.
CHECK INTAKE SENSOR
Refer to
OK or NG
OK
>> Replace front air control. Refer to
.
NG
>> Replace intake sensor. Refer to
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
>> Replace front air control. Refer to
.
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
CONTROL UNIT
MTC-83
C
D
E
F
G
H
I
K
L
M
A
B
MTC
2007 Pathfinder
CONTROL UNIT
PFP:27500
Removal and Installation
EJS004RW
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.
LBIA0416E
MTC-84
INTAKE SENSOR
2007 Pathfinder
INTAKE SENSOR
PFP:27723
Removal and Installation
EJS004RX
REMOVAL
1.
Remove the front kick plate. Refer to
2.
Remove the lower dash side finisher. Refer to
EI-29, "LOWER DASH SIDE FINISHER"
3.
Remove the front pillar lower finisher. Refer to
EI-29, "FRONT PILLAR LOWER FINISHER"
4.
Remove the assist grip handle
5.
Remove the front pillar upper finisher. Refer to
EI-29, "FRONT PILLAR UPPER FINISHER"
6.
Remove the lower glove box. Refer to
IP-15, "LOWER INSTRUMENT PANEL RH AND LOWER GLOVE
7.
Remove the upper glove box (cluster lid E). Refer to
IP-10, "INSTRUMENT PANEL ASSEMBLY"
8.
Disconnect the intake sensor electrical connector.
NOTE:
The intake sensor is located on the top of the heater and cooling
unit assembly next to the A/C evaporator cover.
9.
Twist the intake sensor to remove the intake sensor from the
heater and cooling unit assembly.
INSTALLATION
Installation is in the reverse order of removal.
WJIA1415E
BLOWER MOTOR
MTC-85
C
D
E
F
G
H
I
K
L
M
A
B
MTC
2007 Pathfinder
BLOWER MOTOR
PFP:27226
Components
EJS004RY
Blower Motor
Removal and Installation
EJS004RZ
REMOVAL
1.
Remove the lower glove box assembly. Refer to
IP-15, "LOWER INSTRUMENT PANEL RH AND LOWER
.
2.
Disconnect the blower motor electrical connector.
3.
Remove the three screws and remove the blower motor.
INSTALLATION
Installation is in the reverse order of removal.
LJIA0136E
1.
Heater and cooling unit assembly
2.
Blower motor
3.
Blower motor resistor
MTC-86
IN-CABIN MICROFILTER
2007 Pathfinder
IN-CABIN MICROFILTER
PFP:27277
Removal and Installation
EJS004S0
FUNCTION
The air inside the passenger compartment is filtered by the in-cabin
microfilters when the heater or A/C controls are set on either the
recirculation or fresh mode. The two in-cabin microfilters are located
in the heater and cooling unit assembly.
REPLACEMENT TIMING
Replacement of the two in-cabin microfilters is recommended on a regular interval depending on the driving
conditions. Refer to
. It may also be necessary to replace the two in-cabin
microfilters as part of a component replacement if the in-cabin microfilters are damaged.
REPLACEMENT PROCEDURE
1.
Open the lower glove box and press in on the sides so that it will
open completely allowing it to hang by the cord.
2.
Remove the screw and remove the in-cabin microfilter cover.
3.
Remove the in-cabin microfilters from the heater and cooling
unit housing.
4.
Insert the first new in-cabin microfilter into the heater and cool-
ing unit housing and slide it over to the right. Insert the second
new in-cabin microfilter into the heater and cooling unit housing.
NOTE:
The in-cabin microfilters are marked with air flow arrows. The
end of the microfilter with the arrow should face the rear of the
vehicle. The arrows should point downward.
LJIA0012E
WLIA0023E
LJIA0134E
LJIA0148E
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