Lexus NX: Fail-safe Chart

FAIL-SAFE CHART

AUTOMATIC HIGH BEAM SYSTEM

(a) The main body ECU (multiplex network body ECU) operates in fail-safe mode if an abnormal condition such as those listed below has been detected.

Item

Abnormality Detection Condition

Return Condition

Warning (Multi-information Display)

Airbag ECU Assembly Signal Malfunction

Normal yaw rate signal is not detected.

Normal yaw rate signal is detected.

"Headlight System Malfunction Visit Your Dealer" message is displayed

Speed Sensor Signal Malfunction

Normal speed sensor signal is not detected.

Normal speed sensor signal is detected.

"Headlight System Malfunction Visit Your Dealer" message is displayed

CAN Communication System Malfunction

Normal CAN communication system is not detected.

Normal CAN communication system is detected.

"Headlight System Malfunction Visit Your Dealer" message is displayed

Forward Recognition Camera Signal Malfunction

Normal forward recognition camera signal is not detected.

Normal forward recognition camera signal is detected.

"Headlight System Malfunction Visit Your Dealer" message is displayed

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 Data List / Active Test

DATA LIST / ACTIVE TEST 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. Th

 Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART Automatic High Beam System DTC No. Detection Item Link B124B Automatic High Beam System B124C Automatic High Beam Camera U023A Lost Com

 Vehicle Control History

VEHICLE CONTROL HISTORY CHECK VEHICLE CONTROL HISTORY HINT: The vehicle control history data stores the history of the reject function and system protection operations. for Triple Beam Headlight: C

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 Front Right Sensor Malfunction (C1AE4)

DESCRIPTION The front corner ultrasonic sensor (FR sensor) is installed to the front bumper. The clearance warning ECU assembly detects obstacles based on signals received from the front corner ultrasonic sensor (FR sensor). If the front corner ultrasonic sensor (FR sensor) has an open circuit or ot

 Removal

REMOVAL PROCEDURE 1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM Click here 2. REMOVE BATTERY SERVICE HOLE COVER Click here 3. REMOVE HYBRID BATTERY SERVICE PLUG COVER Click here 4. REMOVE SERVICE PLUG GRIP Click here 5. CHECK TERMINAL VOLTAGE Click here 6. REMOVE NO. 1 ENGINE UNDER

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