Nissan Pathfinder (2007 year). Manual — part 322
AIR CONDITIONER CONTROL
MTC-23
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MTC
2007 Pathfinder
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.
MTC-24
AIR CONDITIONER CONTROL
2007 Pathfinder
Description of Control System
EJS004RA
The control system consists of input sensors, switches, the front air control (microcomputer) and outputs.
The relationship of these components is shown in the figure below:
WJIA1294E
AIR CONDITIONER CONTROL
MTC-25
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MTC
2007 Pathfinder
Control Operation
EJS004RB
Front air control
TEMPERATURE CONTROL DIAL (TEMPERATURE CONTROL)
Increases or decreases the set temperature.
RECIRCULATION () SWITCH
●
When REC switch is ON, REC switch indicator turns ON, and air inlet is set to REC.
●
When REC switch is turned OFF, or when compressor is turned from ON to OFF, REC switch is automati-
cally turned OFF. REC mode can be re-entered by pressing REC switch again.
●
REC switch is not operated when DEF switch is turned ON, or at the D/F position.
DEFROSTER () SWITCH
Positions the air outlet doors to the defrost position. Also positions the intake doors to the outside air position.
REAR WINDOW DEFOGGER SWITCH
When switch is ON, rear window is defogged.
OFF SWITCH (BLOWER SPEED SET TO 0)
The compressor and blower are OFF.
A/C SWITCH
The compressor is ON or OFF.
(Pressing the A/C switch when the AUTO switch is ON will turn off the A/C switch and compressor.)
MODE DIAL
Controls the air discharge outlets.
FRONT BLOWER CONTROL DIAL
Manually controls the four blower speeds.
WJIA1510E
1.
Temperature control dial
2.
Blower control dial
3.
A/C switch
4.
Rear window defogger switch
5.
Recirculation switch
6.
Mode dial
MTC-26
AIR CONDITIONER CONTROL
2007 Pathfinder
Discharge Air Flow
EJS004RC
FRONT
Mode door position
Air outlet/distribution
Vent
Foot
Defroster
95%
5%
—
60%
40%
—
20%
55%
25%
15%
50%
35%
7%
15%
78%
Airflow always present at driver and passenger side demisters
WJIA1296E
AIR CONDITIONER CONTROL
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MTC
2007 Pathfinder
System Description
EJS004RD
SWITCHES AND THEIR CONTROL FUNCTION
WJIA1496E
WJIA1497E
MTC-28
AIR CONDITIONER CONTROL
2007 Pathfinder
CAN Communication System Description
EJS004RE
Refer to
.
TROUBLE DIAGNOSIS
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MTC
2007 Pathfinder
TROUBLE DIAGNOSIS
PFP:00004
CONSULT-II Function (BCM)
EJS004RF
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II START PROCEDURE
Refer to
GI-38, "CONSULT-II Start Procedure"
DATA MONITOR
Display Item List
How to Perform Trouble Diagnosis for Quick and Accurate Repair
EJS004RG
WORK FLOW
SYMPTOM TABLE
BCM diagnostic
test item
Diagnostic mode
Description
Inspection by part
WORK SUPPORT
Supports inspections and adjustments. Commands are transmitted to the BCM
for setting the status suitable for required operation, input/output signals are
received from the BCM and received data is displayed.
DATA MONITOR
Displays BCM input/output data in real time.
ACTIVE TEST
Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS
Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR
The result of transmit/receive diagnosis of CAN communication can be read.
ECU PART NUMBER
BCM part number can be read.
CONFIGURATION
Performs BCM configuration read/write functions.
Monitor item name
“OPERATION OR UNIT”
Contents
IGN ON SW
“ON/OFF”
Displays “IGN Position (ON)/OFF, ACC Position (OFF)” status as judged from ignition switch signal.
COMP ON SIG
“ON/OFF”
Displays “COMP (ON)/COMP (OFF)” status as judged from air conditioner switch signal.
FAN ON SIG
“ON/OFF”
Displays “FAN (ON)/FAN (OFF)” status as judged from blower motor switch signal.
*1
ATC-52, "Operational Check
(Front)"
SHA900E
Symptom
Reference Page
A/C system does not come on.
Go to Trouble Diagnosis Procedure for A/C System.
Air outlet does not change.
Go to Trouble Diagnosis Procedure for Mode Door Motor.
Mode door motor is malfunctioning.
Discharge air temperature does not change.
Go to Trouble Diagnosis Procedure for Air Mix Door Motor.
Air mix door motor is malfunctioning.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor.
Intake door motor is malfunctioning.
MTC-30
TROUBLE DIAGNOSIS
2007 Pathfinder
Front blower motor operation is malfunction-
ing.
Go to Trouble Diagnosis Procedure for Front Blower Motor.
Magnet clutch does not engage.
Go to Trouble Diagnosis Procedure for Magnet Clutch.
Insufficient cooling
Go to Trouble Diagnosis Procedure for Insufficient Cooling.
Insufficient heating
Go to Trouble Diagnosis Procedure for Insufficient Heating.
Noise
Go to Trouble Diagnosis Procedure for Noise.
Symptom
Reference Page
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