Lexus NX: System Diagram
SYSTEM DIAGRAM
Communication Table | Sender | Receiver | Signal | Communication Line |
|---|---|---|---|
| Air conditioning amplifier assembly | Hybrid vehicle control ECU | Heater idle up request signal | CAN |
| ECO mode switch information signal | |||
| Engine ON request signal | |||
| Charging control inhibit signal | |||
| Motor cooling fan drive request signal | |||
| Prior air conditioning control request signal | |||
| Heating performance assistance request signal to transaxle system | |||
| Water pump request flow signal | |||
| Inlet state signal (for cooling battery) | |||
| Standby for inverter request signal | |||
| Compressor with motor assembly start signal | |||
| Compressor with motor assembly target speed signal | |||
| Front blower level indicator signal | |||
| In-vehicle temperature signal | |||
| Ambient temperature display signal | |||
| Air conditioning control state signal | |||
| Air conditioning amplifier assembly | ECM | Heater idle up request signal | CAN |
| Motor cooling fan drive request signal | |||
| Prior air conditioning control request signal | |||
| Heating performance assistance request signal to transaxle system | |||
| Ambient temperature before correction signal | |||
| Refrigerant gas pressure sensor signal | |||
| Ambient temperature display signal | |||
| Air conditioning amplifier assembly | Radio receiver assembly | Air conditioning display request signal | CAN |
| AUTO indicator signal | |||
| Front defroster indicator signal | |||
| Air conditioning indicator signal | |||
| DUAL indicator signal | |||
| Blower level indicator signal | |||
| Outlet auto indicator signal | |||
| Outlet indicator signal | |||
| Blower manual status | |||
| S-FLOW indicator signal | |||
| Blower customize indicator signal | |||
| Pollen removal mode indicator signal | |||
| Air conditioning on-screen request signal | |||
| Request S-FLOW status signal | |||
| Driver side temperature display signal | |||
| Front passenger side temperature display signal | |||
| Air conditioning screen select information signal | |||
| DUAL switch design select information signal | |||
| Temperature unit select information signal | |||
| Blower step select information signal | |||
| Speech recognition level information signal | |||
| Destination select information signal | |||
| Pollen remove select information signal | |||
| Control information signal | |||
| Blower customize switch select information signal | |||
| Ambient temperature display signal | |||
| Switch signal of 0 or 0.5°C below decimal point of ambient temperature display signal | |||
| Air conditioning amplifier assembly | Combination meter assembly | Ambient temperature display signal | CAN |
| Switch signal of 0 or 0.5°C below decimal point of ambient temperature display signal | |||
| Air conditioning load limitation warning signal | |||
| Hybrid vehicle control ECU | Air conditioning amplifier assembly | ECO mode indicator signal | CAN |
| State of STB (standby) signal | |||
| Compulsion recycle request signal | |||
| Air conditioning water pump drive signal | |||
| Air conditioning inverter and HV ECU communication signal | |||
| Air conditioning inverter STB malfunction signal | |||
| Air conditioning permission electric power signal | |||
| READY on signal | |||
| Air conditioning inverter main voltage signal | |||
| Air conditioning inverter output signal | |||
| Motor overload information signal | |||
| Motor start information signal | |||
| Air conditioning inverter internal power source malfunction signal | |||
| STB wire short signal | |||
| Air conditioning inverter temperature information signal | |||
| Self check signal | |||
| Thermistor cold temperature malfunction signal | |||
| Compressor humidity control start signal | |||
| BTC down signal | |||
| Air conditioning motor revolution signal | |||
| Air conditioning input power signal | |||
| Air conditioning motor current request signal | |||
| Air conditioning inverter temperature signal | |||
| Air conditioning inverter voltage signal | |||
| ECM | Air conditioning amplifier assembly | Engine speed data signal | CAN |
| Voltage of auxiliary battery signal | |||
| Compulsory internal air circulation command signal at high water temperature signal | |||
| Engine coolant temperature signal | |||
| Radio receiver assembly | Air conditioning amplifier assembly | Blower customize switch state signal | CAN |
| AUTO switch state signal | |||
| Front defroster switch state signal | |||
| Rear defogger switch state signal | |||
| OFF switch state signal | |||
| Air conditioning switch state signal | |||
| DUAL switch state signal | |||
| Blower up switch state signal | |||
| Blower down switch state signal | |||
| Air outlet switch state signal | |||
| Driver side TEMP up switch state signal | |||
| Driver side TEMP down switch state signal | |||
| Front passenger side TEMP up switch state signal | |||
| Front passenger side TEMP down switch state signal | |||
| Pollen removal mode switch state signal | |||
| Driver side seat speech recognition mode information signal | |||
| Driver side seat speech recognition date addition subtraction information signal | |||
| Driver side seat speech recognition temperature directions data signal | |||
| Front passenger side seat speech recognition mode information signal | |||
| Front passenger side seat speech recognition date addition subtraction information signal | |||
| Front passenger side seat speech recognition temperature directions data signal | |||
| Main body ECU (multiplex network body ECU) | Air conditioning amplifier assembly | Trip count signal | CAN |
| Time count signal | |||
| Auto dimmer signal | |||
| Destination symbol signal | |||
| Destination package signal | |||
| Steering wheel signal | |||
| Main body request signal | |||
| Solar data (R) signal | |||
| Solar data (L) signal | |||
| Combination meter assembly | Air conditioning amplifier assembly | Vehicle speed signal (meter to other) | CAN |
| Power steering ECU assembly | Air conditioning amplifier assembly | Loading control level signal | CAN |
| Airbag sensor assembly | Air conditioning amplifier assembly | Front passenger side seat occupant status signal | CAN |
| Air conditioning control assembly | Air conditioning amplifier assembly | AUTO switch operation signal | LIN |
| OFF switch operation signal | |||
| Blower switch operation signal (up, down) | |||
| Mode switch operation signal | |||
| Front defroster switch operation signal | |||
| Rear defogger switch operation signal | |||
| DUAL switch operation signal | |||
| Recirculation/fresh switch operation signal | |||
| Air conditioning switch operation signal | |||
| Driver side set temperature switch operation signal | |||
| Front passenger side set temperature switch operation signal | |||
| S-FLOW switch operation signal | |||
| Air conditioning amplifier assembly | Air conditioning control assembly | Front panel display instruction signal | LIN |
| AUTO display instruction signal | |||
| A/C switch instruction signal | |||
| Mode switch instruction signal | |||
| Rear defogger display instruction signal | |||
| Front defroster display instruction signal | |||
| DUAL display instruction signal | |||
| Recirculation/fresh display instruction signal | |||
| Driver side set temperature display instruction signal | |||
| Front passenger side set temperature display instruction signal | |||
| Blower level display instruction signal | |||
| S-FLOW display instruction signal |
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System Description
SYSTEM DESCRIPTION GENERAL (a) The air conditioning system has the following controls. Control Outline Neural Network Control This control is capable of performing complex control by artifi
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the air conditioning system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
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Customize Parameters
CUSTOMIZE PARAMETERS 1. CUSTOMIZE AIR CONDITIONING SYSTEM (a) Customizing with the Techstream HINT: The following items can be customized. NOTICE:
When the customer requests a change in a function,
SEE MORE:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspect
Data List / Active Test
DATA LIST / ACTIVE TEST READ DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may b
