Lexus NX: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the headlight ECU sub-assembly LH.
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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 suspected areas in the order they are listed. Replace parts as necessary.
AFS (Adaptive Front-lighting System)| Symptom | Suspected Area | Link |
|---|---|---|
| AFS (adaptive front-lighting system) control does not operate (Left Headlight) | Headlight unit assembly LH | |
| Headlight ECU sub-assembly LH | | |
| AFS (adaptive front-lighting system) control does not operate (Right Headlight) | Headlight unit assembly RH | |
| Headlight ECU sub-assembly RH | |
READ NEXT:
Terminals Of Ecu
TERMINALS OF ECU CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here CHECK HEADLIGHT ECU SUB-ASSEMBLY LH Click here CHECK HEADLIGHT ECU SUB-ASS
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / AFS / Trouble Codes.
Freeze Frame Data
FREEZE FRAME DATA FREEZE FRAME DATA (a) Whenever an automatic headlight beam level control system DTC is stored, the headlight ECU subassembly LH stores the current vehicle state as freeze frame data.
SEE MORE:
Mass Air Flow Meter
ComponentsCOMPONENTS ILLUSTRATION *1 MASS AIR FLOW METER SUB-ASSEMBLY - - On-vehicle InspectionON-VEHICLE INSPECTION CAUTION / NOTICE / HINT NOTICE:
Perform the mass air flow meter sub-assembly inspection according to the procedures below.
Only replace the mass air flow meter sub
PTC Heater Circuit
DESCRIPTION The air conditioning amplifier assembly sends operation signals to the PTC heater relays when quick heater assembly operation conditions are met. Based on the signals from the air conditioning amplifier assembly, the PTC heater relays turn on, and power is supplied to the quick heater as
