Lexus NX: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
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Use the table below to help determine the cause of the problem symptom. 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.
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Inspect the fuses and relays related to this system before inspecting the suspected areas below.
LIN Communication System
| Symptom | Suspected Area | Link |
| Rain sensor LIN communication malfunction* | Rain sensor Lin communication malfunction | |
| Wiper and washer system | |
| Air conditioning LIN communication malfunction | Air conditioning control panel does not operate | |
| Air conditioning system | |
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TERMINALS OF ECU CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (a) Remove the main body ECU (multiplex network body ECU). Click here *1 Main Bo
DTC CHECK / CLEAR CHECK DTC (a) Check main body ECU (multiplex network body ECU) (1) Connect the Techstream to the DLC3. (2) Turn the power switch on (IG). (3) Turn the Techstream on. (4) Enter the fo
DATA LIST / ACTIVE TEST READ DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether
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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
ComponentsCOMPONENTS ILLUSTRATION *A w/ Navigation System - - *1 NO. 1 STEREO JACK ADAPTER ASSEMBLY *2 NO. 3 BOX PANEL ILLUSTRATION *A w/o Navigation System - - *1 NO. 1 STEREO JACK ADAPTER ASSEMBLY *2 NO. 3 BOX PANEL InstallationINSTALLATION PROCEDURE