Lexus NX: System Description
SYSTEM DESCRIPTION
WASHER-LINKED FUNCTION
(a) This system operates the front wipers at low speed immediately after spraying a jet of washer fluid when the front washer switch is turned on for 0.3 seconds or more.
The system operates the front wipers at low speed for approximately 2.2 seconds and then stops operation when the washer switch is turned on for 1.5 seconds or more.
RAIN SENSOR FUNCTION (w/ Rain Sensor)
(a) The rain sensing function controls the wiper timing in accordance with the amount of raindrops that strike the windshield when the windshield wiper switch assembly is in AUTO.
(b) The windshield wiper switch assembly controls the timing based on the signal from the rain sensor.
HEADLIGHT CLEANER FUNCTION (w/ Headlight Cleaner System)
(a) The headlight cleaner system operates only once the first time and every 5 times the front washer switch is operated.
| Headlight Beam (LO/HI) | Washer Switch (Windshield Wiper Switch Assembly) | ||
|---|---|---|---|
| On (First Time) | On (Second Time to Fourth Time) | On (Sixth Time and Every Five Times) | |
| Turn on | Activated | Not Activated | Activated |
| Turn off | Not Activated | Not Activated | Not Activated |
WASHER FLUID LEVEL WARNING FUNCTION
(a) When the volume of washer fluid decreases to below a certain level (when the level warning switch is turned on), the multi-information display warns the driver by displaying a message.
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How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the wiper and washer system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
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Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE:
Recognition code registration is necessary when replacing the main body ECU (multiplex network body ECU).
If the main body ECU (multiplex network body ECU) is repla
Terminals Of Ecu
TERMINALS OF ECU CHECK WINDSHIELD WIPER RELAY ASSEMBLY (w/ Rain Sensor) (a) Disconnect the I56 windshield wiper relay assembly connector. (b) Measure the voltage and resistance according to the value
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Diagnostic Trouble Code Chart
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