System Description

SYSTEM

System Description


DESCRIPTION

- Automatic air conditioning system is controlled by each function of A/C auto amp., BCM, ECM and IPDM E/
R.
- Each operation of air conditioning system is transmitted from multi display unit via CAN communication. A/C
auto amp. transmits each type of indication information to multi display unit via CAN communication. Multi display unit displays each type of indication information that is received.

CONTROL BY A/C AUTO AMP.

-Temperature Control
-Air Outlet Control
-Air Flow Control
-Air Inlet Control
-Compressor Control
-Door Control
-ECO Mode Control
- Correction for input value
- The A/C auto amp. inputs the temperature detected with the ambient sensor as the ambient temperature.
- Perform the correction of the temperature detected with the ambient sensor for air conditioning control.
- Select and use the initial value of ambient temperature data depending on the engine coolant temperature when turning the ignition switch from OFF to ON. Use the detection temperature of the ambient sensor at low coolant temperature [less than approximately 56�
C (133�F)]. Use the memory data (before the ignition switch is OFF) when the engine is warming up [approximately 56�
C (133�F) or more].
- Do not perform the correction of the ambient temperature when the detection temperature of the ambient temperature is less than approximately 20�
C (-4�F).
- The A/C auto amp. inputs the temperature detected with the in-vehicle sensor as the passenger room temperature.
- Perform the correction of the temperature detected with the in-vehicle sensor for air conditioning control.
- The A/C auto amp. performs the correction so that the recognition passenger room temperature changes depending on the difference between the detected passenger room temperature and the recognition passenger room temperature. If the difference is large, the changing is early. The changing becomes slow as the difference becomes small.
- The A/C auto amp. inputs the temperature detected with the intake sensor as the intake temperature.
- Perform the correction of the temperature detected with the intake sensor for air conditioning control.
- The A/C auto amp. performs the correction so that the recognition intake temperature changes depending on the difference between the detected intake temperature and the recognition intake temperature. If the difference is large, the changing is early. The changing becomes slow as the difference becomes small.
- The A/C auto amp. inputs the sunload amount detected with the sunload sensor.
- Perform the correction of the sunload amount detected with the sunload sensor for air conditioning control.
- When the sunload amount suddenly changes, for example when entering a tunnel, perform the correction so that the recognition sunload amount of the A/C auto amp. changes slowly.
- A/C auto amp. controls The A/C auto amp. performs the correction to the target temperature set by the temperature control switch so as to match the temperature felt by the passengers depending on the ambient temperature detected with the ambient sensor and controls it so that the interior air temperature is always the most suitable.

CONTROL BY BCM

-Compressor Control

CONTROL BY ECM

-Compressor Control
- Cooling fan control. System Description.

CONTROL BY IPDM E/R

-Compressor Control
- Cooling fan control. IPDM E/R (With I-Key).