• The climate control unit performs the defroster control based on the signal sent from the airflow mode selector dial, and sends an operating signal to the air intake actuator.
• The climate control unit sends an A/C signal to the PCM via the PJB and instrument cluster based on signals sent from the A/C switch, fan switch and evaporator temperature sensor.
• The PCM sends operating signals to the A/C relay and IAC valve based on A/C signal and vehicle signal.
.
• Manual air conditioner defroster control and A/C compressor control.
|
Control name
|
Control part
|
|---|---|
|
Defroster control
|
Climate control unit
|
|
A/C compressor control
|
Climate control unit
|
1. When the airflow mode selector dial is turned to DEFROSTER position, a wire moves the airflow mode main link, turning the airflow mode to DEFROSTER.
2. The defroster switch turns on at the same time, and the CPU sends a signal to turn the air intake mode to FRESH.
3. The air intake actuator operates and turns the air intake mode to FRESH.
.
|
1
|
Climate control unit
|
|
2
|
Airflow mode selector dial
|
|
3
|
To DEFROSTER position
|
|
4
|
Defroster switch
|
|
5
|
Wire
|
|
6
|
Airflow mode main link
|
|
7
|
FRESH signal
|
|
8
|
Air intake actuator
|
|
9
|
To FRESH position
|
|
Airflow mode
|
Air intake mode (REC/FRESH switch pushed)
|
Defroster control
|
|---|---|---|
|
VENT
|
REC ⇔ FRESH
|
-
|
|
BI-LEVEL
|
REC ⇔ FRESH
|
-
|
|
HEAT
|
REC ⇔ FRESH
|
-
|
|
HEAT/DEF
|
REC ⇔ FRESH
|
-
|
|
DEFROSTER
|
FRESH
|
x
|
• The climate control unit sends an A/C signal to the PCM via the PJB and instrument cluster based on signals sent from the A/C switch, fan switch and evaporator temperature sensor.
• The PCM controls the A/C relay and IAC valve based on the input signal from the climate control unit and refrigerant pressure switch.
.
|
1
|
Evaporator temperature sensor
|
|
2
|
A/C signal
|
|
3
|
Climate control unit
|
|
4
|
PJB and instrument cluster
|
|
5
|
Output
|
|
6
|
A/C relay
|
|
7
|
Magnetic clutch
|
|
8
|
IAC valve
|
.
