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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Installation
INSTALLATION CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE 1. TEMPORARILY INSTALL REAR UPPER CONTROL ARM ASSEMBLY LH (a) Temporarily install the rear upper control arm to the rear suspension member wi
Yaw Rate Sensor (C1234,C1243-C1245,C1279)
DESCRIPTION The skid control ECU (brake booster with master cylinder assembly) receives signals from the yaw rate and acceleration sensor (airbag ECU assembly) via CAN communication. The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition using 2 cir
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