FixVault
Home › Lexus › 2007 › LS 460L › Repair and Diagnosis › Heating, Ventilation & A/C (HVAC) › HVAC Control Systems › Air Conditioning › Air Conditioning System › System Diagram

System Diagram

Fig 1: Air Conditioning - System Diagram
G04950334Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Communication table 

COMMUNICATION CHART

Transmitter Receiver Signal Communication Line
Air conditioning amplifier ECM
  • A/C compressor control signal
  • Idle up request signal
  • External variable control solenoid current signal
  • Cooling fan motor driving request signal
  • PTC heater driving number request signal
 CAN
Air conditioning amplifier Front light ECU (Front controller)
  • Rear defogger relay drive signal (Mirror heater operation control)
  • Windshield deicer relay drive signal
 CAN
Air conditioning amplifier Combination meter
  • Ambient temperature signal
 CAN
Air conditioning amplifier Multi-display
  • IND display signal
  • Set temperature indication signal
  • Ambient temperature signal
  • Buzzer signal
 CAN
Air conditioning amplifier Integration control and panel*
  • IND display signal
  • Set temperature indication signal
  • Ambient temperature signal
  • Buzzer signal
 CAN
Air conditioning amplifier Rear power seat module (Rear A/C control panel)
  • IND display signal
  • Set temperature indication signal
  • Ambient temperature signal
  • Buzzer signal
 LIN
ECM Air conditioning amplifier
  • Engine revolution speed signal
  • Engine coolant temperature signal
  • A/C control cut signal
  • Variable control prohibition signal
  • PTC heater permission number
 CAN
Front light ECU (Front controller) Air conditioning amplifier
  • Ambient temperature signal
  • Pressure sensor signal
  • Smog ventilation sensor signal
 CAN
Rear junction block ECU Air conditioning amplifier
  • Rear solar sensor signal
  • Rear magnetic valve signal
  • Smoke sensor signal
 CAN
Combination meter Air conditioning amplifier
  • Vehicle speed signal
 CAN
Multi-display Air conditioning amplifier
  • A/C operation signal
  • Rear A/C operation signal
  • Rear defogger operation signal
  • Windshield deicer operation signal
  • Mirror heater operation signal
 CAN
Integration control and panel* Air conditioning amplifier
  • A/C operation signal
  • Rear A/C operation signal
  • Rear defogger operation signal
  • Windshield deicer operation signal
  • Mirror heater operation signal
 CAN
Rear power seat module (Rear A/C control panel) Air conditioning amplifier
  • Rear A/C operation signal
 LIN
Rear door ECU LH Air conditioning amplifier
  • Rear temperature sensor LH signal
 CAN
Rear door ECU RH Air conditioning amplifier
  • Rear temperature sensor RH signal
 CAN

HINT:

*: w/o Multi-display

Fig 2: Air Conditioning - System Diagram (1 Of 4)
G04950335Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Air Conditioning - System Diagram (2 Of 4)
G04950336Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 4: Air Conditioning - System Diagram (3 Of 4)
G04950337Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 5: Air Conditioning - System Diagram (4 Of 4)
G04950338Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
About FixVault