Nissan Maxima Service and Repair Manual: Air mix door control system
System Diagram
System Description
The air mix doors are automatically controlled so that in-vehicle temperature is maintained at a predetermined value by the temperature setting, ambient temperature, intake temperature and amount of sunload.
SYSTEM OPERATION
- The A/C auto amp. receives data from each of the sensors.
- The A/C auto amp. sends air mix door, the mode door and the intake door opening angle data to the air mix door motor LCU(s), the mode door motor LCU and the intake door motor LCU.
- The air mix door motor(s), the mode door motor and the intake door motor read their respective signals according to the address signal. Opening angle indication signals received from the A/C auto amp. and each of the motor position sensors are compared by the LCUs in each door motor with the existing decision and opening angles.
- Next, HOT/COLD, DEF/VENT or FRE/REC operation is selected. The newly selected data is returned to the A/C auto amp.
Door Motor Circuit
Air Mix Door Control Specification
When ignition switch is ON, the A/C auto amp. continuously and automatically controls temperatures, regardless of air conditioner operational condition. When setting a target temperature with the temperature control switch, the A/C auto amp. corrects the set temperature and decides a target air mix door opening angle. The A/C auto amp. controls the air mix door according, to the target air mix door opening angle and the current air mix door opening angle, keeping an optimum air mix door opening angle. When the temperature is set at 18C (60F), air mix door is set on full-cold, and when the temperature is set at 32C (90F), it is set to full-hot.
Mode door control system
System Diagram
System Description
The mode door is automatically controlled by the temperature setting, ambient
temperature, in-vehicle temperature,
intake temperature and amount of sunload.
...
Intake door control system
System Diagram
System Description
The intake doors are automatically controlled by the temperature setting,
ambient temperature, in-vehicle temperature,
intake temperature, amount of sunload ...
Other materials:
General maintenance
FOR USA AND CANADA
FOR USA AND CANADA : Explanation of General Maintenance
General maintenance includes those items which should be checked during the
normal day-to-day operation
of the vehicle. They are essential if the vehicle is to continue operating
properly. The owners can perform
che ...
Supplemental air bag warning light
The supplemental air bag warning light,
displaying in the instrument panel,
monitors
the circuits for the air bag systems, pretensioner(
s) and all related wiring.
When the ignition switch is placed in the ON
position, the supplemental air bag warning light
illuminates for about 7 sec ...
Vehicle security system
Your vehicle has two types of security systems:
Vehicle security system
NISSAN Vehicle Immobilizer System
The vehicle security system provides visual and
audible alarm signals if someone opens the
doors, trunk, or hood when the system is armed. It
is not, however, a motion detection ...
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
0.012