Index Nissan Nissan Titan (2014 year) - Service and Repair Manual

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Nissan Titan. Manual - part 374

HAC-1

VENTILATION, HEATER & AIR CONDITIONER

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CONTENTS

HEATER & AIR CONDITIONING CONTROL SYSTEM

AUTOMATIC AIR CONDITIONER

BASIC INSPECTION ....................................

DIAGNOSIS AND REPAIR WORKFLOW ..........

How to Perform Trouble Diagnosis For Quick And
Accurate Repair ........................................................

INSPECTION AND ADJUSTMENT .....................

Operational Check ....................................................

SYSTEM DESCRIPTION ..............................

FUNCTION INFORMATION ................................

Component Part Location .........................................

Symptom Table .......................................................

REFRIGERATION SYSTEM ..............................

Refrigerant Cycle ....................................................

Refrigerant System Protection ................................

AUTOMATIC AIR CONDITIONER SYSTEM .....

Control System Diagram .........................................

Control System Description .....................................

Discharge Air Flow ..................................................

Switches And Their Control Function ......................

DIAGNOSIS SYSTEM (HVAC) ..........................

CONSULT Function (HVAC) ...................................

DIAGNOSIS SYSTEM (BCM) ............................

CONSULT Function (BCM - COMMON ITEM) .......

CONSULT Function (BCM - AIR CONDITIONER) ....

SELF-DIAGNOSIS FUNCTION ..........................

Front Air Control Self-Diagnosis ..............................

Front Air Control Self-Diagnosis Code Chart ..........

DTC/CIRCUIT DIAGNOSIS .........................

MODE DOOR MOTOR .......................................

System Description .................................................

Mode Door Motor Component Function Check .......

Mode Door Motor Diagnosis Procedure ..................

AIR MIX DOOR MOTOR ...................................

System Description ..................................................

Air Mix Door Motor (Driver) Component Function
Check ......................................................................

Air Mix Door Motor (Driver) Diagnosis Procedure ....

Air Mix Door Motor (Passenger) Component
Function Check ........................................................

Air Mix Door Motor (Passenger) Diagnosis Proce-
dure .........................................................................

INTAKE DOOR MOTOR ...................................

System Description ..................................................

Intake Door Motor Component Function Check ......

Intake Door Motor Diagnosis Procedure .................

DEFROSTER DOOR MOTOR CIRCUIT ...........

System Description ..................................................

Defroster Door Motor Component Function Check

Defroster Door Motor Diagnosis Procedure ............

BLOWER MOTOR CONTROL SYSTEM ..........

System Description ..................................................

Front Blower Motor Component Function Check ....

Front Blower Motor Diagnosis Procedure ................

Front Blower Motor Component Inspection .............

MAGNET CLUTCH ...........................................

System Description ..................................................

Magnet Clutch Component Function Check ............

Magnet Clutch Diagnosis Procedure .......................

WATER VALVE CIRCUIT .................................

Description ...............................................................

Water Valve Diagnosis Procedure ...........................

AMBIENT SENSOR ..........................................

Component Description ...........................................

Ambient Sensor Diagnosis Procedure .....................

Ambient Sensor Component Inspection ..................

HAC-2

IN-VEHICLE SENSOR .......................................

Component Description ..........................................

In-Vehicle Sensor Diagnosis Procedure .................

In-Vehicle Sensor Component Inspection ..............

OPTICAL SENSOR ...........................................

Component Description ..........................................

Optical Sensor Diagnosis Procedure ......................

INTAKE SENSOR ..............................................

System Description .................................................

Intake Sensor Diagnosis Procedure .......................

Intake Sensor Component Inspection ....................

POWER SUPPLY AND GROUND CIRCUIT
FOR CONTROLLER ..........................................

Component Description ..........................................

Front Air Control Component Function Check ........

Front Air Control Power and Ground Diagnosis
Procedure ...............................................................

ECU DIAGNOSIS INFORMATION ..............

AIR CONDITIONER CONTROL ........................

Front Air Control Terminals Reference Values .......

WIRING DIAGRAM .....................................

AIR CONDITIONER CONTROL ........................

Wiring Diagram - Automatic Air Conditioner ...........

SYMPTOM DIAGNOSIS .............................

AIR CONDITIONER CONTROL ........................

Symptom Matrix Chart ..........................................

INSUFFICIENT COOLING .................................

Component Function Check ...................................

Diagnostic Work Flow .............................................

Performance Chart .................................................

Trouble Diagnoses for Abnormal Pressure ............

INSUFFICIENT HEATING .................................

Component Function Check ...................................

NOISE ................................................................

Component Function Check ...................................

MEMORY FUNCTION DOES NOT OPERATE ...

Memory Function Check .........................................

PRECAUTION .............................................

PRECAUTIONS .................................................

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................

Working with HFC-134a (R-134a) ..........................

Precaution for Service Equipment ..........................

MANUAL A/C (TYPE 1)

BASIC INSPECTION ...................................

MANUAL A/C IDENTIFICATION TABLE ..........

Application Table ....................................................

DIAGNOSIS AND REPAIR WORKFLOW .........

How to Perform Trouble Diagnosis For Quick And
Accurate Repair ......................................................

INSPECTION AND ADJUSTMENT ...................

Operational Check ..................................................

SYSTEM DESCRIPTION ..........................

MANUAL A/C IDENTIFICATION TABLE .........

Application Table ..................................................

FUNCTION INFORMATION .............................

Component Part Location .....................................

Symptom Table .....................................................

REFRIGERATION SYSTEM .............................

Refrigerant Cycle ..................................................

Refrigerant System Protection ..............................

MANUAL AIR CONDITIONER SYSTEM .........

Control System Diagram .......................................

Control System Description ..................................

Discharge Air Flow ................................................

Switches And Their Control Function ....................

DIAGNOSIS SYSTEM (HVAC) .........................

CONSULT Function (HVAC) .................................

DIAGNOSIS SYSTEM (BCM) ...........................

CONSULT Function (BCM - COMMON ITEM) .....

CONSULT Function (BCM - AIR CONDITIONER) .

SELF-DIAGNOSIS FUNCTION ........................

Front Air Control Self-Diagnosis ...........................

Front Air Control Self-Diagnosis Code Chart ........

DTC/CIRCUIT DIAGNOSIS .......................

MANUAL A/C IDENTIFICATION TABLE .........

Application Table ..................................................

MODE DOOR MOTOR .....................................

System Description ...............................................

Mode Door Motor Component Function Check ....

Mode Door Motor Diagnosis Procedure ................

AIR MIX DOOR MOTOR ..................................

System Description ...............................................

Air Mix Door Motor Component Function Check ..

Air Mix Door Motor Diagnosis Procedure ..............

INTAKE DOOR MOTOR ...................................

System Description ...............................................

Intake Door Motor Component Function Check ....

Intake Door Motor Diagnosis Procedure ...............

DEFROSTER DOOR MOTOR CIRCUIT ..........

System Description ...............................................

HAC-3

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Defroster Door Motor Component Function Check

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Defroster Door Motor Diagnosis Procedure ..........

BLOWER MOTOR CONTROL SYSTEM .........

System Description ...............................................

Front Blower Motor Component Function Check ..

Front Blower Motor Diagnosis Procedure .............

Front Blower Motor Component Inspection ...........

MAGNET CLUTCH ...........................................

System Description ...............................................

Magnet Clutch Component Function Check .........

Magnet Clutch Diagnosis Procedure .....................

WATER VALVE CIRCUIT ................................

Description ............................................................

Water Valve Diagnosis Procedure ........................

AMBIENT SENSOR .........................................

Component Description .........................................

Ambient Sensor Diagnosis Procedure ..................

Ambient Sensor Component Inspection ................

INTAKE SENSOR ............................................

System Description ...............................................

Intake Sensor Diagnosis Procedure ......................

Intake Sensor Component Inspection ...................

POWER SUPPLY AND GROUND CIRCUIT
FOR CONTROLLER ........................................

Component Description .........................................

Front Air Control Component Function Check ......

Front Air Control Power and Ground Diagnosis
Procedure ..............................................................

ECU DIAGNOSIS INFORMATION ............

MANUAL A/C IDENTIFICATION TABLE ........

Application Table ...................................................

AIR CONDITIONER CONTROL .......................

Front Air Control Terminals Reference Values .....

WIRING DIAGRAM ....................................

AIR CONDITIONER CONTROL .......................

Wiring Diagram - Manual With 2 Control Dial Sys-
tem ........................................................................

SYMPTOM DIAGNOSIS ............................

MANUAL A/C IDENTIFICATION TABLE ........

Application Table ...................................................

AIR CONDITIONER CONTROL .......................

Symptom Matrix Chart .........................................

INSUFFICIENT COOLING ...............................

Component Function Check ..................................

Diagnostic Work Flow ...........................................

Performance Chart ................................................

Trouble Diagnoses for Abnormal Pressure ...........

INSUFFICIENT HEATING ...............................

Component Function Check ..................................

NOISE ..............................................................

Component Function Check ..................................

PRECAUTION ............................................

PRECAUTIONS ...............................................

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................

Working with HFC-134a (R-134a) .........................

Precaution for Service Equipment .........................

MANUAL A/C (TYPE 2)

BASIC INSPECTION .................................

MANUAL A/C IDENTIFICATION TABLE .......

Application Table ...................................................

DIAGNOSIS AND REPAIR WORKFLOW ......

How to Perform Trouble Diagnosis For Quick And
Accurate Repair .....................................................

INSPECTION AND ADJUSTMENT ................

Operational Check .................................................

SYSTEM DESCRIPTION ...........................

MANUAL A/C IDENTIFICATION TABLE .......

Application Table ...................................................

FUNCTION INFORMATION ............................

Component Part Location ......................................

Symptom Table .....................................................

REFRIGERATION SYSTEM ...........................

Refrigerant Cycle ...................................................

Refrigerant System Protection ...............................

MANUAL AIR CONDITIONER SYSTEM ........

Control System Diagram .......................................

Control System Description ...................................

Discharge Air Flow ................................................

Switches And Their Control Function ....................

DIAGNOSIS SYSTEM (BCM) .........................

CONSULT Function (BCM - COMMON ITEM) ......

CONSULT Function (BCM - AIR CONDITIONER) ..

DTC/CIRCUIT DIAGNOSIS .......................

MANUAL A/C IDENTIFICATION TABLE .......

Application Table ...................................................

MODE DOOR MOTOR ....................................

System Description ................................................

Mode Door Motor Component Function Check .....

Mode Door Motor Diagnosis Procedure ................

HAC-4

AIR MIX DOOR MOTOR ..................................

System Description ................................................

Air Mix Door Motor Component Function Check ...

Air Mix Door Motor Diagnosis Procedure ..............

INTAKE DOOR MOTOR ..................................

System Description ................................................

Intake Door Motor Component Function Check ....

Intake Door Motor Diagnosis Procedure ...............

DEFROSTER DOOR MOTOR CIRCUIT .........

System Description ................................................

Defroster Door Motor Component Function Check

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Defroster Door Motor Diagnosis Procedure ...........

BLOWER MOTOR CONTROL SYSTEM ........

System Description ................................................

Front Blower Motor Component Function Check ...

Front Blower Motor Diagnosis Procedure ..............

Front Blower Motor Component Inspection ...........

MAGNET CLUTCH ..........................................

System Description ................................................

Magnet Clutch Component Function Check ..........

Magnet Clutch Diagnosis Procedure .....................

WATER VALVE CIRCUIT ................................

Description .............................................................

Water Valve Diagnosis Procedure .........................

INTAKE SENSOR ............................................

System Description ................................................

Intake Sensor Diagnosis Procedure ......................

Intake Sensor Component Inspection ...................

POWER SUPPLY AND GROUND CIRCUIT
FOR CONTROLLER ........................................

Component Description .........................................

Front Air Control Component Function Check .......

Front Air Control Power and Ground Diagnosis
Procedure ..............................................................

ECU DIAGNOSIS INFORMATION ............

MANUAL A/C IDENTIFICATION TABLE .........

Application Table ..................................................

AIR CONDITIONER CONTROL .......................

Front Air Control Terminals Reference Values .....

WIRING DIAGRAM ...................................

AIR CONDITIONER CONTROL .......................

Wiring Diagram - Manual With 3 Control Dial Sys-
tem ........................................................................

SYMPTOM DIAGNOSIS ...........................

MANUAL A/C IDENTIFICATION TABLE .........

Application Table ..................................................

AIR CONDITIONER CONTROL .......................

Symptom Matrix Chart .........................................

INSUFFICIENT COOLING ................................

Component Function Check .................................

Diagnostic Work Flow ...........................................

Performance Chart ................................................

Trouble Diagnoses for Abnormal Pressure ...........

INSUFFICIENT HEATING ................................

Component Function Check .................................

NOISE ...............................................................

Component Function Check .................................

PRECAUTION ...........................................

PRECAUTIONS ................................................

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...............................................................

Working with HFC-134a (R-134a) .........................

Precaution for Service Equipment ........................

Content .. 372 373 374 375 ..