Lexus NX: Diagnosis System

DIAGNOSIS SYSTEM

CHECK DLC3

(a) Check the DLC3.

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INSPECT AUXILIARY BATTERY VOLTAGE

(a) Measure the auxiliary battery voltage with the power switch off.

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the auxiliary battery.

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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

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DESCRIPTION When the rear window defogger switch (mirror heater switch) on the air conditioning control assembly is pressed, the operation signal is transmitted to the air conditioning amplifier assem

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DESCRIPTION When the outer mirror switch assembly (mirror retract switch) is operated, a retract/return signal is received by the main body ECU (multiplex network body ECU). The main body ECU (multipl

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 Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

DESCRIPTION The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the radio receiver assembly via this circuit. The sound signal that has been sent is amplified by the stereo component amplifier assembly and then is sent to the speakers. If there is an open or shor

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DESCRIPTION When there is a short to GND in the power supply for the transponder key amplifier of the power switch, the certification ECU (smart key ECU assembly) stores this DTC. DTC No. Detection Item DTC Detection Condition Trouble Area Note B278A Short to GND in Immobiliser Syst

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