Nissan Maxima Service and Repair Manual: System description

COMPRESSOR CONTROL FUNCTION

Description

PRINCIPLE OF OPERATION

Compressor is not activated.

Functional circuit diagram

Nissan Maxima. PRINCIPLE OF OPERATION

CAN (1): A/C switch signal
: Blower fan motor switch signal
CAN (2): A/C compressor request signal

Functional initial inspection chart

Nissan Maxima. PRINCIPLE OF OPERATION

Fail-Safe

FAIL-SAFE FUNCTION

  • If a communication error exists between the A/C auto amp., the AV control unit and the A/C and AV switch assembly for 30 seconds or longer, air conditioner is controlled under the following conditions:

Compressor: ON
Air outlet: AUTO
Air inlet: FRE ( )
Blower fan speed: AUTO
Set temperature: Setting before communication error occurs
Display: OFF

    Basic inspection
    INSPECTION AND ADJUSTMENT Operational Check DESCRIPTION The purpose of the operational check is to check that the individual system operates normally. Conditions: Engine running at normal operat ...

    Automatic air conditioner system
    System Diagram CONTROL SYSTEM The control system consists of input sensors, switches, the A/C auto amp. (microcomputer) and outputs. The relationship of these components is as shown in the figure ...

    Other materials:

    Magnet clutch
    Description SYSTEM DESCRIPTION A/C auto amp. controls A/C compressor operation by ambient temperature and signal from ECM. Low Temperature Protection Control A/C auto amp. will turn the A/C compressor ON or OFF as determined by a signal detected by ambient sensor. When ambient temperatur ...

    Precaution
    Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver ...

    Power supply and ground circuit
    A/C AUTO AMP. A/C AUTO AMP.: Description COMPONENT DESCRIPTION A/C Auto Amp. (Air Conditioner Automatic Amplifier) The A/C auto amp. (1) has a built-in microcomputer that processes information sent from various sensors needed for air conditioner operation. The air mix door motor(s), the mo ...

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