Nissan Pathfinder (2005 year). Instruction — part 354
AIR CONDITIONER CONTROL
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MTC
2005 Pathfinder
Description of Control System
EJS003V3
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:
Control Operation
EJS003V4
Front air control
WJIA1294E
WJIA1295E
MTC-24
AIR CONDITIONER CONTROL
2005 Pathfinder
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 (DEF) 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 SWITCH
Controls the air discharge outlets.
FRONT BLOWER CONTROL DIAL
Instructionly controls the four blower speeds.
AIR CONDITIONER CONTROL
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MTC
2005 Pathfinder
Discharge Air Flow
EJS003V5
FRONT
WJIA1296E
WJIA1297E
MTC-26
AIR CONDITIONER CONTROL
2005 Pathfinder
System Description
EJS003V6
SWITCHES AND THEIR CONTROL FUNCTION
WJIA1298E
WJIA1299E
AIR CONDITIONER CONTROL
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MTC
2005 Pathfinder
CAN Communication System Description
EJS003V7
Refer to
.
MTC-28
TROUBLE DIAGNOSIS
2005 Pathfinder
TROUBLE DIAGNOSIS
PFP:00004
CONSULT-II Function (BCM)
EJS003V8
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1.
With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, and turn the
ignition switch ON.
2.
Touch “START (NISSAN BASED VHCL)”.
3.
Touch “BCM” on “SELECT SYSTEM” screen.
If “BCM” is not indicated, go to
.
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.
WJIA1078E
BCIA0029E
BCIA0030E
TROUBLE DIAGNOSIS
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MTC
2005 Pathfinder
DATA MONITOR
Operation Procedure
1.
Touch “AIR CONDITIONER” on “SELECT TEST ITEM” screen.
2.
Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
3.
Touch either “ALL SIGNALS” or “SELECTION FROM MENU” on
“DATA MONITOR” screen.
4.
When “SELECTION FROM MENU” is selected, touch items to
be monitored. When “ALL SIGNALS” is selected, all the items
will be monitored.
5.
Touch “START”.
6.
Touch “RECORD” while monitoring, then the status of the moni-
tored item can be recorded. To stop recording, touch “STOP”.
Display Item List
WJIA0468E
BCIA0031E
All signals
Monitors all the items.
Selection from menu
Selects and monitors the individual item selected.
WJIA0469E
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.
MTC-30
TROUBLE DIAGNOSIS
2005 Pathfinder
How to Perform Trouble Diagnosis for Quick and Accurate Repair
EJS003V9
WORK FLOW
SYMPTOM TABLE
*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.
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.
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