Nissan Titan A60. Instruction — part 580
HAC-3
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HAC
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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 . . . .
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 - Instruction 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 . . . . . . . . . . . ...
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-III Function (BCM - COMMON ITEM) ..
CONSULT-III Function (BCM - AIR CONDITION-
ER) . . . . . . . . . . . . . . . . . .
DTC/CIRCUIT DIAGNOSIS . . . . . ...
MANUAL A/C IDENTIFICATION TABLE . ...
Application Table . . . . . . . . . . . . ...
HAC-4
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 . . . . . . . . . . . .
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 . . . . . . .
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 - Instruction 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 . . . . . . . . . . . .
Working with HFC-134a (R-134a) . . . . . . .
DIAGNOSIS AND REPAIR WORKFLOW
HAC-5
< BASIC INSPECTION >
[AUTOMATIC AIR CONDITIONER]
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
How to Perform Trouble Diagnosis For Quick And Accurate Repair
INFOID:0000000006164670
WORK FLOW
1.
LISTEN TO CUSTOMER COMPLAINT
Listen to customer complaint. Get detailed information about the conditions and environment when the symp-
tom occurs.
>> GO TO 2
2.
CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 3.
3.
VERIFY THE SYMPTOM WITH OPERATIONAL CHECK
Verify the symptom with operational check. Refer to
.
Can a symptom be duplicated?
YES
>> GO TO 4
NO
>> GO TO 5
4.
GO TO APPROPRIATE TROUBLE DIAGNOSIS
Go to appropriate trouble diagnosis. Refer to
HAC-82, "Symptom Matrix Chart"
.
Can a symptom be duplicated?
>> GO TO 5.
5.
PERFORM THE FRONT AIR CONTROL SELF-DIAGNOSIS
Perform front air control self-diagnosis. Refer to
HAC-21, "Front Air Control Self-Diagnosis"
>> If any diagnostic trouble codes set. Refer to
HAC-21, "Front Air Control Self-Diagnosis Code
.
>> Confirm the repair by performing operational check. Refer to
.
HAC-6
< BASIC INSPECTION >
[AUTOMATIC AIR CONDITIONER]
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
Operational Check
INFOID:0000000006164671
The purpose of the operational check is to confirm that the system operates properly.
CHECKING MEMORY FUNCTION
1. Set the temperature to 32
° (90°F).
2. Press the OFF switch.
3. Turn ignition switch OFF.
4. Turn ignition switch ON.
5. Press the AUTO switch.
6. Confirm that the set temperature remains at previous temperature.
7. Press the OFF switch.
If NG, go to trouble diagnosis procedure for
HAC-94, "Memory Function Check"
If OK, continue with next check.
CHECKING BLOWER
1. Rotate the blower control dial clockwise once, blower should operate on low speed.
2. Rotate the blower control dial again, and continue checking blower speed until all speeds are checked.
3. Leave blower on maximum speed.
If NG, go to trouble diagnosis procedure for
HAC-44, "Front Blower Motor Diagnosis Procedure"
.
If OK, continue with next check.
CHECKING DISCHARGE AIR
1. Press each MODE switch and the DEF
switch.
2. Each MODE position indicator should illuminate.
3. Confirm that discharge air comes out according to the air distribution table. Refer to
.
Mode door position is checked in the next step.
If NG, go to trouble diagnosis procedure for
HAC-23, "Mode Door Motor Diagnosis Procedure"
If OK, continue the check.
NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at
fresh when the DEF or D/F is selected.
CHECKING RECIRCULATION ( , ONLY)
1. Press recirculation (
) switch one time. Recirculation indicator should illuminate.
2. Press recirculation (
) switch one more time. Recirculation indicator should go off.
3. Listen for intake door position change (blower sound should change slightly).
If NG, go to trouble diagnosis procedure for
HAC-36, "Intake Door Motor Diagnosis Procedure"
.
If OK, continue the check.
NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at fresh
when the DEF or D/F is selected. REC (
) is not allowed in DEF (
) D/F (
) or FOOT (
).
CHECKING TEMPERATURE DECREASE
1. Rotate temperature control dial (drive or passenger) counterclockwise until 18
°C (60°F) is displayed.
2. Check for cold air at appropriate discharge air outlets.
If NG, listen for sound of air mix door motor operation. If OK, go to trouble diagnosis procedure for
. If air mix door motor appears to be malfunctioning, go to
Motor (Driver) Component Function Check"
Conditions
: Engine running and at normal operating temperature
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