Lexus NX: Problem Symptoms Table
Lexus NX Service Manual / Vehicle Interior / Meter / Gauge / Display / Headup Display System / 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 symptom 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.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | Link |
|---|---|---|
| Headup display is not displayed. | Proceed to "Main Switch Circuit" | |
| Fuse (ECU-B NO.1) | - | |
| Wire harness or connector | - | |
| Meter mirror sub-assembly | | |
| Brightness of the headup display does not change. | Perform Active Test (Display Brightness) | |
| Read the Data List (Brightness Up Switch (Meter)), Brightness Down Switch (Meter)) | | |
| Meter mirror sub-assembly | | |
| Headup display is not displayed in the correct position. | Perform Active Test (Display Position) | |
| Read the Data List (Projection Position Up Switch (Meter), Projection Position Down Switch (Meter)) | | |
| Meter mirror sub-assembly | | |
| Other headup display malfunction (Other systems are normal) | Meter mirror sub-assembly | |
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Terminals Of Ecu
TERMINALS OF ECU HEADUP DISPLAY (METER MIRROR SUB-ASSEMBLY) (a) Measure the voltage and resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Des
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 / Head Up Display / Tr
Data List / Active Test
DATA LIST / ACTIVE TEST 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 a pa
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DESCRIPTION If the entry unlock function does not operate for the back door only, but the entry lock function operates, the request code is being transmitted properly from the back door. In this case, there may be a problem related to the open switch (connection between the back door opener switch a
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