Nissan Maxima Service and Repair Manual: Magnet clutch control system
System Diagram
System Description
The A/C auto amp. controls A/C compressor operation by ambient temperature, intake air temperature and signal from ECM.
SYSTEM OPERATION
When the A/C switch, the AUTO switch, or the DEF switch is pressed, or when shifting mode position to D/F, the A/C auto amp. transmits the A/C switch signal and blower fan motor switch signal to the ECM, via CAN communication.
ECM judges whether the A/C compressor can be turned ON, based on each sensor status (refrigerant-pressure sensor signal, throttle angle, etc.). If the ECM judges that the A/C compressor can be turned ON, it sends A/C compressor request signal to the IPDM E/R, via CAN communication.
Upon receipt of A/C compressor request signal from the ECM, the IPDM E/R turns the A/C relay ON to operate the A/C compressor.
When sending A/C compressor request signal to the IPDM E/R via CAN communication line, the ECM simultaneously sends A/C compressor feedback signal to A/C auto amp. via CAN communication line.
The ECM sends A/C compressor feedback signal to A/C auto amp., then, uses input A/C compressor feedback signal to control air inlet.
A/C compressor Protection Control
The ECM makes the A/C relay turn OFF and stops the A/C compressor when pressure on the high-pressure side, detected by the refrigerant pressure sensor, is over approximately 3,119 kPa (31.8 kg/cm2, 452 psi), or below approximately 118 kPa (1.2 kg/cm2, 17 psi).
Low Temperature Protection Control
Turn the A/C relay to OFF and stop the A/C compressor by the signal from the A/C auto amp., according to the evaporator passing air temperature detected by the intake sensor and the ambient temperature detected by the ambient sensor
Blower motor control system
System Diagram
System Description
Fan speed is automatically controlled by the temperature setting, ambient
temperature, in-vehicle temperature,
intake temperature, amount of sunload and air ...
Can communication system
System Description
CAN (Controller Area Network) is a serial communication line for real time
application. It is an on-vehicle multiplex
communication line with high data communication speed and e ...
Other materials:
Measurement of weights
Secure loose items to prevent weight
shifts that could affect the balance of your
vehicle. When the vehicle is loaded, drive
to a scale and weigh the front and the rear
wheels separately to determine axle
loads. Individual axle loads should not exceed
either of the gross axle weight ratings
( ...
Anti-lock Braking System (ABS)
WARNING
The ABS is a sophisticated device, but it
cannot prevent accidents resulting from
careless or dangerous driving techniques.
It can help maintain vehicle control
during braking on slippery surfaces.
Remember that stopping distances on
slippery surfaces will be longer than on
norma ...
How to read the displayed lines
Guiding lines which indicate the vehicle width
and distances to objects with reference to the
vehicle body line A are displayed on the monitor.
Distance guide lines
Indicate distances from the vehicle body.
Red line 1 : approx. 1.5 ft (0.5 m)
Yellow line 2 : approx. 3 ft (1 m)
Green ...
Nissan Maxima Owners Manual
- Illustrated table of contents
- Safety-Seats, seat belts and supplemental restraint system
- Instruments and controls
- Pre-driving checks and adjustments
- Monitor, climate, audio, phone and voice recognition systems
- Starting and driving
- In case of emergency
- Appearance and care
- Do-it-yourself
- Maintenance and schedules
- Technical and consumer information
Nissan Maxima Service and Repair Manual
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