Nissan Titan A60. Manual - part 596
POWER SUPPLY AND GROUND CIRCUIT FOR CONTROLLER
HAC-67
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
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POWER SUPPLY AND GROUND CIRCUIT FOR CONTROLLER
Component Description
INFOID:0000000006164719
COMPONENT DESCRIPTION
Front Air Control
The front air control has a built-in microcomputer which processes
information sent from various sensors needed for air conditioner
operation. The air mix door motors, mode door motor, intake door
motor, defroster door motor, blower motor and compressor are then
controlled.
The front air control is unitized with control mechanisms. When the
various switches and temperature dials are operated, data is input to
the front air control.
Self-diagnostic functions are also built into the front air control to pro-
vide quick check of malfunctions in the auto air conditioner system.
Potentio Temperature Control (PTC)
There are two PTCs (driver and passenger) built into the front air
control. They can be set at an interval of 0.5
°C (1.0°F) in the 18°C
(60
°F) to 32°C (90°F) temperature range by rotating the temperature
dial. The set temperature is displayed.
Front Air Control Component Function Check
INFOID:0000000006164720
SYMPTOM: A/C system does not come on.
INSPECTION FLOW
1.
CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - AUTO MODE
1. Press AUTO switch.
2. Confirm that the compressor clutch engages (sound or visual inspection). (Discharge air and blower
speed will depend on ambient, in-vehicle and set temperatures.)
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Go to diagnosis procedure. Refer to
HAC-67, "Front Air Control Power and Ground Diagnosis
.
Front Air Control Power and Ground Diagnosis Procedure
INFOID:0000000006164721
Regarding Wiring Diagram information, refer to
HAC-71, "Wiring Diagram - Automatic Air Conditioner"
DIAGNOSTIC PROCEDURE FOR A/C SYSTEM
AWIIA0551ZZ
AWIIA0938ZZ