Lexus NX: Fail-safe Chart

Lexus NX Service Manual / Vehicle Exterior / Lighting (ext) / Automatic Headlight Beam Level Control System (for Triple Beam Headlight) / 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	Displayed	Output
	LED light source malfunction	High beam	Not Displayed	Output
	Fan malfunction		Displayed	Output
	Other than above (communication with main body ECU (multiplex network body ECU))		Displayed	Output
Automatic headlight beam level control system			Displayed	Output
AFS (adaptive front-lighting system)*			Displayed	Output
Power supply	IG voltage line malfunction		Displayed	Output
Power supply	Other than an IG voltage line malfunction		Not displayed	Not output

*: w/ AFS (Adaptive Front-lighting System)

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Data List / Active Test

DATA LIST / ACTIVE TEST READ DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may b

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NOTICE ■When the rear window is dry Do not use the wiper, as it may damage the rear window. Operating the wiper lever Operating the switch operates the rear wiper as follows: Type A Off Intermittent operation Normal operation Washer/wiper dual oper

Lexus NX: Fail-safe Chart

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