Lexus NX: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

  • Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  • Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Steering Lock System

Symptom

Suspected Area

Link

Steering lock does not lock

Refer to "Steering Lock does not Lock"

Steering does not unlock (hybrid control system cannot be started)

Refer to "Unable to Unlock Steering Wheel (Hybrid Control System cannot Start)"

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 Terminals Of Ecu

TERMINALS OF ECU TERMINAL INSPECTION *a Component without harness connected (Steering Lock ECU (Steering Lock Actuator Assembly)) - - (a) Measure the voltage and resistance according to t

 Diagnosis System

DIAGNOSIS SYSTEM DESCRIPTION NOTICE: When using the Techstream with the power switch off to confirm DTCs or Data List information related to the smart access system with push button start, the Tech

 Dtc Check / Clear

DTC CHECK / CLEAR NOTICE: The steering lock ECU (steering lock actuator assembly) does not store history DTCs. If any DTCs are output, confirm and record them as soon as possible. Do not turn the p

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 Inspection

INSPECTION PROCEDURE 1. INSPECT CHARCOAL CANISTER ASSEMBLY (a) Visually check the charcoal canister assembly for cracks or damage. If cracks or damage is found, replace the charcoal canister assembly. (b) Check the canister operation. *1 Connector *a Vent Line Port *b

 Drive Motor "A" Inverter Performance (P0A78-279)

DTC SUMMARY MALFUNCTION DESCRIPTION These DTCs indicate that an overvoltage in the inverter has occurred. The cause of this malfunction may be one of the following: Internal inverter malfunction Inverter internal circuit malfunction Malfunction in the sensors for inverter control (current senso

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