Lexus NX: Air Conditioning System
- Precaution
- Parts Location
- System Diagram
- System Description
- How To Proceed With Troubleshooting
- Customize Parameters
- Initialization
- Problem Symptoms Table
- Dtc Check / Clear
- Terminals Of Ecu
- Check Mode Procedure
- Data List / Active Test
- Diagnostic Trouble Code Chart
- Room Temperature Sensor Circuit (B1411)
- Ambient Temperature Sensor Circuit (B1412)
- Evaporator Temperature Circuit or Evaporator Fin Thermistor (B1413)
- Open in Pressure Sensor Circuit / Abnormal Refrigerant Pressure (B1423)
- Air Mix Damper Control Servo Motor Circuit (Passenger Side) (B1441)
- Air Inlet Damper Control Servo Motor Circuit (B1442)
- Air Outlet Damper Control Servo Motor Circuit (B1443)
- Air Mix Damper Control Servo Motor Circuit (Driver Side) (B1446)
- Air Outlet Damper Control Servo Motor Circuit (Rear) (B1449)
- A/C Inverter High Voltage Power Resource System Malfunction (B1471)
- A/C Inverter High Voltage Output System Malfunction (B1472)
- A/C Inverter Start-up Signal System Malfunction (B1473)
- A/C Inverter Malfunction (B1474)
- A/C Inverter Cooling / Heating System Malfunction (B1475)
- A/C Inverter Load System Malfunction (B1476)
- A/C Inverter Low Voltage Power Resource System Malfunction (B1477)
- Communication Malfunction (Bus Ic) (B1497)
- Communication Malfunction (A/C Inverter Local) (B1498)
- Glass Temperature Sensor Circuit (B14A8)
- Glass Surroundings Temperature Sensor Circuit (B14A9)
- Glass Humidity Sensor Circuit (B14AA)
- Lost Communication with Front Panel LIN (B14B2)
- Refrigerant Shortage (B14B8)
- Hybrid Battery Voltage System Isolation Fault (P0AA6-611)
- Lost Communication with ECM / PCM "A" (U0100-U0142,U0155,U0163,U0293)
- Blower Motor Circuit
- Heater Water Pump Circuit
- PTC Heater Circuit
- Ambient Temperature Display System
- ECO Switch Circuit
- IG Power Source Circuit
- Back-up Power Source Circuit
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Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE:
After the power switch is turned off, there may be a waiting time before disconnecting the negative (-
Parts Location
PARTS LOCATION ILLUSTRATION *A for 2WD *B for AWD *1 AIR CONDITIONING TUBE AND ACCESSORY ASSEMBLY (AIR CONDITIONER PRESSURE SENSOR) *2 THERMISTOR ASSEMBLY (AMBIENT TEMPERATURE SENS
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
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Removal
REMOVAL PROCEDURE 1. REMOVE REAR SEAT ASSEMBLY (a) for Power Seat: Click here (b) for Manual Seat: Click here 2. REMOVE REAR FLOOR FINISH PLATE Click here 3. REMOVE REAR DOOR OPENING TRIM WEATHERSTRIP LH Click here 4. REMOVE UPPER DECK TRIM SIDE BOARD LH Click here 5. REMOVE ROPE H
P/W Master Switch Communication Stop (B1206)
DESCRIPTION This DTC is stored when LIN communication between the multiplex network master switch assembly and main body ECU (multiplex network body ECU) stops for 10 seconds or more. DTC No. Detection Item DTC Detection Condition Trouble Area B1206 P/W Master Switch Communication Sto
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