Lexus NX: System Diagram
Lexus NX Service Manual / Vehicle Exterior / Lighting (ext) / Lighting System (for Single Beam Headlight) / System Diagram
SYSTEM DIAGRAM
Tail, Stop, Headlight Circuit
Turn Signal Circuit
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System Description
SYSTEM DESCRIPTION AUTOMATIC LIGHT CONTROL SYSTEM (a) When the headlight dimmer switch is in the AUTO position, the automatic light control system detects ambient light levels and controls the headlig
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the lighting system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
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Operation Check
OPERATION CHECK AUTOMATIC LIGHT CONTROL SYSTEM OPERATION CHECK (a) Turn the power switch on (IG). (b) Turn the headlight dimmer switch to the AUTO position. (c) Cover the automatic light control senso
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Start Up Signal Circuit between Radio Receiver Assembly and Navigation ECU
DESCRIPTION This circuit includes the navigation ECU and radio and display receiver assembly. WIRING DIAGRAM PROCEDURE 1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NAVIGATION ECU) (a) Disconnect the I153 radio receiver assembly connector. (b) Disconnect the I173 navigation ECU
Fail-safe Chart
FAIL-SAFE CHART FAIL-SAFE FUNCTION (a) Headlight ECU sub-assembly (1) The headlight ECU sub-assembly stops light operation if the following malfunctions are detected. Malfunction Multi-information Display Warning DTC Output Lighting on/off LED light source malfunction Low beam Displ
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