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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The settings of these features can
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or at your Lexus dealer.
Customizing vehicle features
When c
Outside Air Temperature Sensor (C1652)
DESCRIPTION When a malfunction signal sent from the air conditioning system via CAN communication is detected by the clearance warning ECU assembly, DTC C1652 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area C1652 Outside Air Temperature Sensor Ambient temperat
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