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Nissan 2005 Pathfinder User Manual

Nissan 2005 Pathfinder
114 pages
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MTC-1
MANUAL AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
C
D
E
F
G
H
I
K
L
M
SECTION MTC
A
B
MTC
Revision: November 2005 2005 Pathfinder
PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
Precautions for Working with HFC-134a (R-134a) ..... 4
Contaminated Refrigerant ........................................ 4
General Refrigerant Precautions .............................. 5
Precautions for Leak Detection Dye ......................... 5
A/C Identification Label ............................................ 6
Precautions for Refrigerant Connection ................... 6
FEATURES OF NEW TYPE REFRIGERANT
CONNECTION ...................................................... 6
O-RING AND REFRIGERANT CONNECTION ..... 7
Precautions for Servicing Compressor ..................... 9
Precautions for Service Equipment .......................... 9
RECOVERY/RECYCLING EQUIPMENT .............. 9
ELECTRONIC LEAK DETECTOR ........................ 9
VACUUM PUMP ................................................. 10
MANIFOLD GAUGE SET .................................... 10
SERVICE HOSES ............................................... 10
SERVICE COUPLERS .........................................11
REFRIGERANT WEIGHT SCALE .......................11
CHARGING CYLINDER .......................................11
Wiring Diagrams and Trouble Diagnosis .................11
PREPARATION ......................................................... 12
Special Service Tools ............................................. 12
HFC-134a (R-134a) Service Tools and Equipment ... 12
Commercial Service Tools ...................................... 15
REFRIGERATION SYSTEM ..................................... 16
Components ........................................................... 16
REFRIGERATION SYSTEM ............................... 16
Refrigerant Cycle ................................................... 17
REFRIGERANT FLOW ....................................... 17
FREEZE PROTECTION ..................................... 17
Refrigerant System Protection ............................... 17
REFRIGERANT PRESSURE SENSOR ............. 17
PRESSURE RELIEF VALVE ............................... 18
LUBRICANT .............................................................. 19
Maintenance of Lubricant Quantity in Compressor ...19
LUBRICANT ........................................................ 19
CHECKING AND ADJUSTING ............................ 19
AIR CONDITIONER CONTROL ............................... 21
Description ..............................................................21
Operation ................................................................ 21
AIR MIX DOOR CONTROL ................................. 21
BLOWER SPEED CONTROL ............................. 21
INTAKE DOORS CONTROL ............................... 21
MODE DOOR CONTROL ................................... 21
DEFROSTER DOOR CONTROL ........................ 21
MAGNET CLUTCH CONTROL ........................... 21
Description of Control System ................................ 23
Control Operation ................................................... 24
TEMPERATURE CONTROL DIAL (TEMPERA-
TURE CONTROL) ............................................... 24
RECIRCULATION () SWITCH ............................. 24
DEFROSTER () SWITCH .................................... 24
REAR WINDOW DEFOGGER SWITCH .............24
OFF SWITCH (BLOWER SPEED SET TO 0) ..... 24
A/C SWITCH ....................................................... 24
MODE DIAL ......................................................... 24
FRONT BLOWER CONTROL DIAL .................... 24
Discharge Air Flow ................................................. 25
FRONT ................................................................ 25
System Description ................................................. 26
SWITCHES AND THEIR CONTROL FUNCTION ...26
CAN Communication System Description .............. 27
TROUBLE DIAGNOSIS ............................................ 28
CONSULT-II Function (BCM) ................................. 28
CONSULT-II BASIC OPERATION ....................... 28
DATA MONITOR ................................................. 29
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ...................................................... 30
WORK FLOW ...................................................... 30
SYMPTOM TABLE ..............................................30
Component Parts and Harness Connector Location ... 31
ENGINE COMPARTMENT ..................................31
FRONT PASSENGER COMPARTMENT ............ 32
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Nissan 2005 Pathfinder Specifications

General IconGeneral
BrandNissan
Model2005 Pathfinder
CategoryAutomobile
LanguageEnglish

Summary

Precautions for Air Conditioning System

SRS and HFC-134a Safety Guidelines

Safety guidelines for Supplemental Restraint System (SRS) and HFC-134a refrigerant handling.

Contaminated Refrigerant Handling

Procedures and warnings for dealing with contaminated refrigerant in the AC system.

General Refrigerant and Leak Detection Precautions

Guidelines for general refrigerant handling, leak detection dye, and system connections.

Component and Equipment Safety Precautions

Precautions for servicing the compressor, vacuum pump, and service equipment.

Refrigerant Line and Connection Precautions

Details on O-ring and refrigerant connections, including new type features.

Service Equipment Usage Guidelines

Usage guidelines for vacuum pumps, manifold gauge sets, and service hoses.

Preparation for Air Conditioning Service

Special and HFC-134a Service Tools

Identification and usage of special tools for HFC-134a AC systems.

Leak Detection Equipment

Using electronic and fluorescent dye leak detectors for AC system diagnosis.

Manifold Gauge Set and Service Equipment

Specifications and usage of manifold gauge sets, hoses, and couplers.

Commercial Service Tools

List of commercial tools for AC system service, including refrigerant identifiers.

Refrigeration System Operation

System Components and Operation

Diagram and explanation of refrigeration system components and flow.

Refrigerant Pressure and Protection

Function of refrigerant pressure sensors, relief valves, and freeze protection.

Lubricant Maintenance and Adjustment

Lubricant Quantity and Adjustment

Importance of correct lubricant level and procedures for checking/adjusting.

Air Conditioner Control System

System Description and Operation

Overview of the front air control system, its inputs, and outputs.

Control Operation and Switch Functions

Detailed explanation of control dial and switch operations.

Discharge Air Flow Distribution

Table showing air outlet distribution based on mode door position.

System Description and Control Functions

Description of system components and their control functions.

Trouble Diagnosis Procedures

CONSULT-II and Data Monitor Usage

Using the CONSULT-II tool for system diagnosis and data monitoring.

Troubleshooting Workflow and Symptom Analysis

Guide for diagnosing AC system faults based on symptoms and workflow.

Component Locations and Schematics

Diagrams showing the location of key components and connectors.

Operational Checks and Circuit Diagnosis

Procedures for performing operational checks and diagnosing circuits.

Specific Component Diagnosis Procedures

Detailed diagnostic steps for individual AC system components.

Control Unit and Component Installation

Front Air Control Removal and Installation

Steps for removing and installing the front air control unit.

Intake Sensor Removal and Installation

Procedures for removing and installing the intake sensor.

Blower Motor Removal and Installation

Steps for removing and installing the blower motor.

Microfilter Replacement Procedure

Instructions for replacing the in-cabin microfilters.

Heater & Cooling Unit Assembly Service

Removal and installation procedures for the heater and cooling unit.

Heater Core Service Procedures

Steps for removing and installing the heater core.

Motor Component Removal and Installation

Procedures for removing and installing intake, mode, and air mix door motors.

Blower Motor Resistor Service

Steps for removing and installing the front blower motor resistor.

Ducts and Grilles Service

Duct System Components

Diagram of the air ducts within the AC system.

Grilles and Console Duct Removal

Procedures for removing various grilles and console ducts.

Specific Duct Removal Procedures

Detailed steps for removing defroster nozzles, demister ducts, and floor ducts.

Refrigerant Lines and Service

HFC-134a Service Procedures and Equipment

Guidelines for servicing HFC-134a systems, including tool setup.

Evacuating and Charging Refrigerant

Detailed steps for evacuating and recharging the AC system with refrigerant.

Compressor and Condenser Components

Identification of AC compressor and condenser components.

Compressor Removal and Installation

Procedures for removing and installing the AC compressor assembly.

Compressor Clutch Service

Steps for removing and installing the compressor clutch assembly.

Hose and Pipe Replacement Procedures

Replacing AC hoses and pipes, including O-ring and oil application.

Refrigerant Leak Checking Procedures

Methods for finding refrigerant leaks using electronic and dye detectors.

Service Data and Specifications (SDS)

Compressor Specifications

Technical data for the AC compressor, including model and displacement.

Lubricant and Refrigerant Details

Details on AC system lubricant type, part number, and refrigerant type.

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