Air Conditioning (Push Control SW Type)

1. AIR INLET CONTROL SERVO MOTOR OPERATION (FOR PUSH SW TYPE)
(Switching from Fresh to RECIRC)
With the ignition SW ON, current from the GAUGE Fuse flows to TERMINAL 2 of the Air Inlet Control Servo Motor. When the RECIRC SW is turned ON, current flows from the servo motor to TERMINAL 3 --> TERMINAL 6 of the Heater Control SW --> TERMINAL 1 --> GROUND, the motor rotates and the damper moves to the RECIRC side. When it is in the RECIRC position, the circuit is cut inside the servo motor and the damper stops in that position.
When the circuit for the indicator light, current flows from the GAUGE Fuse --> TERMINAL 12 of the Heater Control SW indicator light --> TERMINAL 1 --> GROUND, and the indicator light continues to light up while the RECIRC SW is ON.
(Switching from RECIRC to Fresh)
When the ignition is ON and the Fresh SW is turned ON, current flows from TERMINAL 2 of the Air Inlet Control Servo Motor --> TERMINAL 6 of the Heater Control SW --> TERMINAL 1 --> GROUND, the motor rotates and the damper moves to the Fresh side. When the damper is in the Fresh position, the circuit is cut inside the servo motor and the damper stops in that position.

2. OPERATION OF AIR VENT MODE CONTROL SERVO MOTOR
When the ignition SW ON, current flows from the GAUGE Fuse to TERMINAL 12 of the Heater Control SW and TERMINAL 6 of the Air Vent Mode Control Servo Motor.
When the damper is in face position and the Bi-level of the Heater Control SW is then turned ON, current flows from TERMINAL 3 of the Heater Control SW --> TERMINAL 4 of the Air Vent Mode Control Servo Motor so that a signal that the GROUND circuit is activated is input into TERMINAL 'B' of the control circuit inside the Air Vent Mode Control Servo Motor.
Simultaneously, a signal that the GROUND circuit is not activated is input into TERMINAL 'A' of the control circuit inside the servo motor. These two signals activate the control circuit so that current from the GAUGE Fuse to the servo motor, causing the servo motor to operate and the damper to move to Bi-level position. When the damper reaches Bi-level position, a GROUND cut signal is input into TERMINAL 'B' of the control circuit, the control circuit operates, the servo motor stops rotating and the damper stops at Bi-level.
When another mode position is Switched to, input of signals into TERMINAL 'A' and TERMINAL 'B' of the control circuit that GROUND is made or GROUND is not made (as explained above) activates the control circuit and moves the servo motor to the desired position.

3. AIR CONDITIONING OPERATION
When the ignition SW ON, current flows from GAUGE Fuse to TERMINAL 12 of the Heater Control SW and TERMINAL 6 of the Air Vent Mode Control Servo Motor.
When the blower SW is ON, current flows from the GAUGE Fuse to the Heater Relay (coil side) --> TERMINAL 7 of the Blower SW --> TERMINAL 5 --> GROUND, activating the Heater Relay. This causes current to flow from the heater Fuse to the Heater Relay (point side) --> A/C Fuse --> TERMINAL 7 of the Heater Control SW (A/C SW). If the Heater Control SW (A/C SW) is then turned ON at this time, a signal is input to the A/C amplifier. This activates the A/C amplifier and A/C Magnetic Clutch Relay so that current flows from the GAUGE Fuse to the A/C Magnetic Clutch Relay (point side) --> A/C magnetic clutch, causing the compressor to operate. The VSV (for A/C idle-up) is turned ON simultaneously to prevent a decrease in engine speed due to A/C operation.