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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Drive Motor "A" Control Module (P0A1B-505,P0A1B-806)

DTC SUMMARY MALFUNCTION DESCRIPTION These DTCs indicate that a large current flowed in the inverter for the motor. The cause of this malfunction may be one of the following: Internal inverter malfunction Internal circuit malfunction in the inverter for the motor Malfunction in ECU that controls

Components

COMPONENTS ILLUSTRATION *1 DECK FLOOR BOX LH *2 NO. 3 DECK BOARD SUB-ASSEMBLY *3 REAR DECK FLOOR BOX *4 AUXILIARY BATTERY NEGATIVE TERMINAL N*m (kgf*cm, ft.*lbf): Specified torque - - ILLUSTRATION *1 HEADLIGHT DIMMER SWITCH ASSEMBLY *2 TILT AND TELESCOPIC

Lexus NX: Fail-safe Chart

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Freeze Frame Data

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Drive Motor "A" Control Module (P0A1B-505,P0A1B-806)

Components