Lexus NX: System Description
SYSTEM DESCRIPTION
GENERAL
The windshield deicer thin heater wires are attached to the inside of the windshield glass to help deice the window surface more quickly. The indicator light illuminates while the system is operating. The system automatically turns off after approximately 15 minutes.
NOTICE:
If the auxiliary battery voltage becomes low, windshield deicer operation is canceled to prioritize supplying power to the power steering system.
for Power Tilt and Power Telescopic Steering Column: Click here .gif)
for Manual Tilt and Manual Telescopic Steering Column: Click here
FUNCTION OF MAIN COMPONENT
| Component | Outline |
|---|---|
| Multi-display Assembly | Sends signals to the radio receiver assembly to operate the windshield deicer. |
| Air Conditioning Amplifier Assembly | Sends windshield deicer activation request signals to the front wiper deicer relay. |
| Front Wiper Deicer Relay | Receives windshield deicer activation request signals from the air conditioning amplifier assembly and supplies power to the windshield deicer wire (windshield glass). |
| Windshield Glass (Windshield Deicer Wire) | Receives power from the front wiper deicer relay and heats the windshield deicer. |
READ NEXT:
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the windshield deicer system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
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Operation Check
OPERATION CHECK CHECK WINDSHIELD DEICER SYSTEM (a) Turn the power switch on (IG). (b) Check that the windshield deicer becomes warm by operating the windshield deicer switch of the multi-display assem
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE: If the auxiliary battery voltage becomes low, windshield deicer operation is canceled to prioritize supplying power to the power steering system. for Power Tilt and Powe
SEE MORE:
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Steering Lock System DTC No. Detection Item Link B2781 Open / Short in Steering Lock ECU B2782 Power Source Control ECU Malfunction B2788 IG2 Signal Malfunction
All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch
DESCRIPTION The main body ECU (multiplex network body ECU) receives switch signals from the door control switch assembly on the front passenger door and activates the door lock motor on each door according to these signals. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
When using the Techstream
