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 | |
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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.
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Test Mode Procedure
TEST MODE PROCEDURE TEST MODE PROCEDURE NOTICE:
After replacing the absorber control ECU, it is necessary to perform registration of vehicle identification information. Vehicle identification information is automatically acquired when the system enters test mode.
When vehicle identification inf
Precaution
PRECAUTION INITIALIZATION NOTICE: Perform Registration (VIN registration) when replacing the ECM. Click here DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE:
After the power switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary batter
