| A/C and AV switch assembly |
Front A/C control operation signal is transmitted from the A/C and AV switch assembly to AV control unit via communication line. |
| A/C auto amp. |
A/C auto amp. controls ACCS (advanced climate control system) by inputting and calculating signals from each sensor and each switch. A/C auto amp. has self-diagnosis function. Diagnosis of ACCS (advanced climate control system) can be performed quickly. |
| AV control unit |
AV control unit transmits A/C switch operation signal to A/C auto amp. via CAN communication line. |
| Display unit |
Display unit indicates operation status of ACCS (advanced climate control system). |
| Exhaust gas/outside odor detecting sensor |
Exhaust gas/outside odor detecting sensor measures exhaust gas outside of the passenger room. In addition to previous exhaust gas detection function, unpleasant odor in ambient atmosphere is also measured. |
| Intake door motor |
The intake door motor controls the position of the intake door. Fresh air is allowed to enter the cabin in one position, and recirculated inside air is allowed to enter in the other position. At times the front air control may command partial fresh or recirculation based on evaporator or coolant temperatures. The intake door motor receives position commands from the A/C auto amp. and reports actual door position back via an LCU (Local Control Unit) installed inside the motor. Commands and responses are sent across the LIN (Local Interconnect Network) to each motor simultaneously, with each motor having its own unique address, thereby only responding to requests sent to its specific address. The LCU reads the door position from a Position Balanced Resistor (PBR), also part of the motor, and returns that information to the front air control. The LCU switches the polarity of the circuits connected to the DC motor to drive the motor forward or backward as requested by the front air control. If the recirculation door moves to a position less than 5% or more than 95% of its expected or allowed positions, the A/C auto amp will set a DTC. |
| Ionizer |
Ionizer generates an approximately equal proportional amount of positive and negative ions in the air. |