System Description [10/2022 - 11/2023]
WARNING: This page is about a different variant/trim than selected.
- COMMUNICATION SYSTEM FUNCTION
- The air conditioning amplifier assembly communicates with each ECU via CAN communication and LIN communication. 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 ←→ MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
Receiver Sender Signal Communication Line Air conditioning amplifier assembly Main body ECU (multiplex network body ECU) BDB1S01 sub ID CAN Auto dimmer Passenger's seat courtesy SW Rear right side courtesy SW Rear left side courtesy SW BDB1S08 sub ID Destination symbol Country code 1st Country code 2nd Country code 3rd Steering wheel Solar data (R) Solar data (L) Main body ECU (multiplex network body ECU) Air conditioning amplifier assembly Ambient temperature display CAN AIR CONDITIONING AMPLIFIER ASSEMBLY ←→ COMBINATION METER ASSEMBLYReceiver Sender Signal Communication Line Air conditioning amplifier assembly Combination meter assembly MET1S01 sub ID CAN Vehicle speed (meter to other) MET1S08 sub ID Passenger presence 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 ←→ AIRBAG SENSOR ASSEMBLYReceiver Sender Signal Communication Line Air conditioning amplifier assembly Airbag sensor assembly Passenger's seat occupant status CAN Passenger's seat belt buckle switch status AIR CONDITIONING AMPLIFIER ASSEMBLY ←→ HYBRID VEHICLE CONTROL ECUReceiver Sender Signal Communication Line Air conditioning amplifier assembly Hybrid vehicle control ECU Drive mode select CAN Engine type information 1 Engine type information 2 Engine type information 3 Engine type information 4 HV flag ECO-run flag Battery maximum temperature State of STB (standby) Compulsion recycle request Communication AC inverter and HV ECU AC inverter STB malfunction No electrical heater request A/C permission electric power READY A/C inverter main voltage A/C inverter output Motor over load information Communication AC inverter and HV ECU Motor start information A/C inverter internal power source malfunction STB wire short State of STB A/C inverter temperature information Self check Thermistor cold temperature malfunction BTC DOWN A/C motor revolution A/C input power A/C inverter temperature A/C inverter CPU error flag A/C inverter CPU initialization flag A/C inverter identification Hybrid vehicle control ECU Air conditioning amplifier assembly Refrigerant gas pressure sensor CAN Comp command acceleration In-vehicle temperature Heating performance assistance request signal to transmission system Motor cooling fan drive request Front blower level INDICATOR Heater idleup request Engine ON request Charging control inhibit Electromotion compressor target revolutions Ambient temperature before correction Ambient temperature display Electromotion compressor start Prior A/C control request Standby for inverter request Inlet state (for cooling battery) A/C control state AIR CONDITIONING AMPLIFIER ASSEMBLY ←→ POWER STEERING ECU (RACK AND PINION POWER STEERING GEAR ASSEMBLY)Receiver Sender Signal Communication Line Air conditioning amplifier assembly Power steering ECU (rack and pinion power steering gear assembly) Loading control level CAN Power steering ECU (rack and pinion power steering gear assembly) Air conditioning amplifier assembly Ambient temperature display CAN AIR CONDITIONING AMPLIFIER ASSEMBLY ←→ ECMReceiver Sender Signal Communication Line Air conditioning amplifier assembly ECM Engine RPM data CAN Deicer inhibit Voltage of accessory battery Flag for water stop valve close condition Compulsory internal air circulation command signal at high water temperature Flow rate to heater core Water temperature ECM Air conditioning amplifier assembly Refrigerant gas pressure sensor CAN Heating performance assistance request signal to transmission system Motor cooling fan drive request Heater idleup request Ambient temperature before correction Ambient temperature display Prior A/C control request Heater priority request FSV close request Minimum heater flow request AIR CONDITIONING AMPLIFIER ASSEMBLY ←→ DCM (TELEMATICS TRANSCEIVER)Receiver Sender Signal Communication Line Air conditioning amplifier assembly DCM (telematics transceiver) YGW1S01 sub ID CAN Remote E/G start system control YGW1S02 sub ID Defogger control Air conditioner control DCM (telematics transceiver) Air conditioning amplifier assembly Drive recorder ACN01 CAN Drive recorder ACN02 Drive recorder ACN03 Drive recorder ACN04 Drive recorder ACN05 Drive recorder ACN06 Drive recorder ACN07 Drive recorder ACN08 A/C warning on-screen request DEF INDICATOR A/C INDICATOR Indicator signal that shows concentration on one seat Dr TEMPERATURE display In-vehicle temperature Ambient temperature display A/C control state AIR CONDITIONING AMPLIFIER ASSEMBLY ←→ AIR CONDITIONING CONTROL ASSEMBLY (W/O TOYOTA MULTI OPERATION TOUCH SYSTEM)Receiver Sender Signal Communication Line Air conditioning amplifier assembly Air conditioning control assembly Auto operation switch LIN OFF operation switch A/C operation switch Fr blower operation switch [push type] SFLW operation switch AUTO/MANUAL identifier information D outlet operation switch [push type] DEF operation switch Rr DEF operation switch DUAL SYNC operation switch Deicer operation switch Deicer switch variation Dr set temperature operation switch [pulse type] Pa set temperature operation switch [pulse type] Inlet operation switch 2 REAR operation switch R set temperature operation switch [push type] WITH OR WITHOUT S-FLOW FUNCTION DUAL/SYNC IDENTIFICATION INFORMATION Rr panel mode SW Part number information 1 Part number information 2 Part number information 3 Part number information 4 Part number information 5 Air conditioning control assembly Air conditioning amplifier assembly SFLW indicator LIN Wiper deicer indication Front panel all indicator AUTO indicator Blower level indicator REC indicator D seat mode indicator RDEF indicator DUAL/SYNC indicator D setting temperature indicator P setting temperature indicator Dimming A/C indicator Rr blower level indicator Rr AUTO indicator Rr SYNC indicator Rr ON indicator Rear indicator Rr R seat mode indicator Rr R setting temperature indicator AIR CONDITIONING AMPLIFIER ASSEMBLY ←→ AIR CONDITIONING CONTROL ASSEMBLYReceiver Sender Signal Communication Line Air conditioning amplifier assembly Air conditioning control assembly Auto operation switch LIN OFF operation switch Fr blower operation switch [push type] AUTO/MANUAL identifier information DEF operation switch Rr DEF operation switch Deicer switch variation Dr set temperature [push type] Pa set temperature [push type] Pa set temperature operation switch [pulse type] WITH OR WITHOUT S-FLOW FUNCTION WITH OR WITHOUT BLW CS FUNCTION Part number information 1 Part number information 2 Part number information 3 Part number information 4 Part number information 5 Air conditioning control assembly Air conditioning amplifier assembly Front panel all indicator LIN AUTO indicator D seat mode indicator RDEF indicator Dimming AIR CONDITIONING AMPLIFIER ASSEMBLY ←→ NO. 2 AIR CONDITIONING CONTROL ASSEMBLYReceiver Sender Signal Communication Line Air conditioning amplifier assembly No. 2 air conditioning control assembly Auto operation switch LIN AUTO/MANUAL identification information OFF operation switch Rear blower operation switch RR outlet operation switch RR setting temperature switch Part number information 1 Part number information 2 Part number information 3 Part number information 4 Part number information 5 No. 2 air conditioning control assembly Air conditioning amplifier assembly Rear panel all indicator LIN AUTO indicator Blower level indicator RR seat mode indicator RR setting temperature indicator Dimming AIR CONDITIONING AMPLIFIER ASSEMBLY ←→ DAMPER SERVOReceiver Sender Signal Communication Line Air conditioning amplifier assembly No. 1 air conditioning radiator damper servo sub-assembly Damper position signal LIN No. 1 blower damper servo sub-assembly Rear air mix damper servo sub-assembly Rear mode damper servo sub-assembly No. 1 air conditioning radiator damper servo sub-assembly Air conditioning amplifier assembly LIN No. 1 blower damper servo sub-assembly Rear air mix damper servo sub-assembly Rear mode damper servo sub-assembly AIR CONDITIONING AMPLIFIER ASSEMBLY ←→ BLOWER MOTOR, SENSOR, SWITCH, ETC.Receiver Sender Signal Communication Line Air conditioning amplifier assembly Room temp. sensor (cooler thermistor) Sensor value signal Direct line No. 2 room temp. sensor (cooler thermistor) Ambient temp. sensor (thermistor assembly) Air conditioner pressure sensor Evaporator temp. sensor (No. 1 cooler thermistor) Rear evaporator temp. sensor (No. 2 air conditioning harness assembly) Blower motor with fan sub-assembly Drive signal Rear blower motor control Drive signal Blower motor with fan sub-assembly Air conditioning amplifier assembly Drive signal Direct line Rear blower motor control Drive signal
- The air conditioning amplifier assembly communicates with each ECU via CAN communication and LIN communication. Also, the air conditioning amplifier assembly transmits and receives the damper position, damper operation, sensor status, etc., signals to and from each actuator.