| Last Modified: 05-08-2025 | 6.11:8.1.0 | Doc ID: RM100000001FPDS |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - 08/2020] |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model): SYSTEM DESCRIPTION; 2019 - 2020 MY RAV4 [11/2018 - 08/2020] | ||
SYSTEM DESCRIPTION
COMMUNICATION SYSTEM FUNCTION
(a) Air conditioning amplifier assembly transmits and receives the signals in each ECU via the CAN communication system and LIN communication system. Also, the air conditioning amplifier assembly transmits and receives the damper position, damper operation, sensor status, etc., signals to and from each actuator.
Air Conditioning Amplifier Assembly ←→ Airbag ECU Assembly
|
Receiver |
Sender |
Signal |
Communication Line |
|---|---|---|---|
|
Air conditioning amplifier assembly |
Airbag ECU assembly |
Front passenger's seat occupant status |
CAN |
Air Conditioning Amplifier Assembly ←→ Main Body ECU (Multiplex Network Body ECU)
|
Receiver |
Sender |
Signal |
Communication Line |
|---|---|---|---|
|
Air conditioning amplifier assembly |
Main body ECU (multiplex network body ECU) |
Auto dimmer |
CAN |
|
Front passenger courtesy switch |
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|
Rear courtesy switch LH |
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|
Rear courtesy switch RH |
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|
Country code 1st, 2nd, 3rd |
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|
Steering wheel |
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|
Solar data (R) |
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|
Solar data (L) |
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|
Windshield temperature |
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|
Ambient temperature of humidity sensor |
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|
Main body ECU (multiplex network body ECU) |
Air conditioning amplifier assembly |
Ambient temperature display |
CAN |
Air Conditioning Amplifier Assembly ←→ Rack and Pinion Power Steering Gear Assembly (Power Steering ECU)
|
Receiver |
Sender |
Signal |
Communication Line |
|---|---|---|---|
|
Rack and pinion power steering gear assembly (power steering ECU) |
Air conditioning amplifier assembly |
Ambient temperature display |
CAN |
Air Conditioning Amplifier Assembly ←→ Combination Meter Assembly
|
Receiver |
Sender |
Signal |
Communication Line |
|---|---|---|---|
|
Air conditioning amplifier assembly |
Combination meter assembly |
Vehicle speed (meter to other) |
CAN |
|
Front passenger's seat occupant status |
|||
|
Combination meter assembly |
Air conditioning amplifier assembly |
Ambient temperature display |
CAN |
|
Switch signal of 0 or 0.5 below decimal point of ambient temperature display |
|||
|
A/C load limitation warning |
Air Conditioning Amplifier Assembly ←→ ECM
|
Receiver |
Sender |
Signal |
Communication Line |
|---|---|---|---|
|
Air conditioning amplifier assembly |
ECM |
Drive mode select |
CAN |
|
Engine type information signal 1 - 4 |
|||
|
Eco-run flag |
|||
|
Engine r/min data |
|||
|
Water temperature |
|||
|
Alternative field duty value |
|||
|
A/C control cut-off 1, 2 and 4 |
|||
|
Variable control inhibition |
|||
|
A/C cut-off instruction flag at deceleration |
|||
|
A/C supercooling command flag at deceleration |
|||
|
Voltage of accessory battery |
|||
|
A/C lubrication control inhibit |
|||
|
Flag for water stop valve close condition |
|||
|
Compulsory internal air circulation command signal at high water temperature |
|||
|
Flow rate to the heater core |
|||
|
ECM |
Air conditioning amplifier assembly |
Magnet clutch request |
CAN |
|
A/C idle up request |
|||
|
Heater idle up request |
|||
|
ECO switch information |
|||
|
Charging control inhibit |
|||
|
Prior A/C control request |
|||
|
Acceleration cut inhibit |
|||
|
Generator control inhibit |
|||
|
Request control by refrigerant |
|||
|
Ambient temperature before correction |
|||
|
Refrigerant information |
|||
|
First advancement evaporator temperature |
|||
|
Variable compressor solenoid current |
|||
|
Refrigerant gas pressure sensor |
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|
Ambient temperature display |
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|
FSV close request |
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|
Minimum heater flow request |
Air Conditioning Amplifier Assembly ←→ Air Conditioning Control Assembly (for Automatic Air Conditioning System)
|
Receiver |
Sender |
Signal |
Communication Line |
|---|---|---|---|
|
Air conditioning amplifier assembly |
Air conditioning control assembly |
Independent control A/C information |
LIN |
|
AUTO switch operation |
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|
OFF switch operation |
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|
A/C switch operation |
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|
ECO switch operation |
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|
Blower switch operation |
|||
|
S-FLOW switch operation |
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|
Auto/manual identification information |
|||
|
Air outlet switch operation |
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|
DUAL switch operation |
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|
Driver side set temperature switch operation |
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|
Heater/cooler identification information |
|||
|
Front passenger side set temperature switch operation |
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|
Recirculation/fresh switch operation |
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|
S-FLOW select information |
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|
Blower customize select information |
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|
Air conditioning control assembly |
Air conditioning amplifier assembly |
S-FLOW display instruction |
LIN |
|
Blower customize display instruction |
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|
ECO display instruction |
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|
Entire front panel display instruction |
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|
AUTO display instruction |
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|
Blower level display instruction |
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|
Recirculation display instruction |
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|
Air outlet display instruction |
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|
DUAL display instruction |
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|
Driver side set temperature display instruction |
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|
Front passenger side set temperature display instruction |
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|
A/C display instruction |
Air Conditioning Amplifier Assembly ←→ Air Conditioning Control Assembly (for Manual Air Conditioning System)
|
Receiver |
Sender |
Signal |
Communication Line |
|---|---|---|---|
|
Air conditioning amplifier assembly |
Air conditioning control assembly |
Independent control A/C information |
LIN |
|
OFF switch operation |
|||
|
A/C switch operation |
|||
|
Blower switch operation |
|||
|
Auto/manual identification information (for Automatic Air Conditioning System) |
|||
|
Air outlet switch operation |
|||
|
Set temperature switch operation |
|||
|
Heater/cooler identification information |
|||
|
Recirculation/fresh switch operation |
|||
|
Air conditioning control assembly |
Air conditioning amplifier assembly |
Entire front panel display instruction |
LIN |
|
Blower level display instruction |
|||
|
Recirculation display instruction |
|||
|
Air outlet display instruction |
|||
|
Set temperature display instruction |
|||
|
A/C display instruction |
Air Conditioning Amplifier Assembly ←→ Damper Servo
|
Receiver |
Sender |
Signal |
Communication Line |
|---|---|---|---|
|
Air conditioning amplifier assembly |
No. 1 air conditioning radiator damper servo sub-assembly |
Damper arm position |
LIN |
|
No. 2 air conditioning radiator damper servo sub-assembly |
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|
No. 3 air conditioning radiator damper servo sub-assembly (w/ Driver Seat Centralized Control) |
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|
No. 1 blower damper servo sub-assembly |
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|
No. 1 air conditioning radiator damper servo sub-assembly |
Air conditioning amplifier assembly |
||
|
No. 2 air conditioning radiator damper servo sub-assembly |
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|
No. 3 air conditioning radiator damper servo sub-assembly (w/ Driver Seat Centralized Control) |
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|
No. 1 blower damper servo sub-assembly |
Air Conditioning Amplifier Assembly ←→ Blower Motor, Sensor, Switch etc.
|
Receiver |
Sender |
Signal |
Communication Line |
|---|---|---|---|
|
Air conditioning amplifier assembly |
Cooler thermistor (room temperature sensor) (for Automatic Air Conditioning System) |
Sensor value |
Direct line |
|
Thermistor assembly |
|||
|
Air conditioner pressure sensor |
|||
|
No. 1 cooler thermistor |
|||
|
Integration control and panel assembly (ECO switch) |
ECO switch |
||
|
Blower with fan motor sub-assembly |
Air conditioning amplifier assembly |
Drive |
|
|