Lexus NX: 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 symptoms are listed in order of probability in the "Suspected Area" column of the table.
- Check each system 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 area below.
| Symptom | Suspected Area | Link |
|---|---|---|
| Only manual switch does not operate | Tilt and telescopic manual switch circuit | |
| Multiplex tilt and telescopic ECU | | |
| Only auto away/return function does not operate | Check customize status of auto away/return function using the Techstream | |
| IG power source circuit | | |
| Multiplex tilt and telescopic ECU | | |
| Only auto away function does not operate | Smart access system with push-button start (for start function) | |
| Multiplex tilt and telescopic ECU | | |
| Only auto return function does not operate | Smart access system with push-button start (for start function) | |
| Multiplex tilt and telescopic ECU | | |
| Only memory function does not operate | Front power seat control system | |
| Front power seat switch | | |
| Multiplex tilt and telescopic ECU | | |
| Memory call function does not operate | Front power seat control system | |
| Power mirror control system | | |
| Multiplex tilt and telescopic ECU | |
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Terminals Of Ecu
TERMINALS OF ECU MULTIPLEX TILT AND TELESCOPIC ECU *a Component without harness connected (Multiplex Tilt and Telescopic ECU) - - (a) Measure the voltage and resistance according to the v
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) When troubleshooting a vehicle with the diagnostic system, the only difference from the usual troubleshooting procedure is connecting the Techstream to the vehicle and
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG). (d) Turn the Techstream on. (e) Enter the following menus: Body El
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Inspection
INSPECTION PROCEDURE 1. INSPECT HEADLIGHT ASSEMBLY LH (a) Apply battery voltage to the connector and check the light illumination condition. OK: Battery Connection Specified Condition Positive (+) → 3 (LO) Negative (-) → 4 (E) Headlight illuminates Positive (+) → 2 (SOL) Neg
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) Smart access system with push-button start (for Entry Function) data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). In some cases, a malfunction may be occurring in the smart access system with push-button start. Whe
