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.

Airbag System

Symptom

Suspected Area

Link

SRS warning light goes off after primary check, but then comes on

SRS Warning Light Circuit

When power switch is turned on (IG), SRS warning light sometimes comes on after approximately 6 seconds

SRS Warning Light Circuit

SRS warning light always comes on even when no DTCs are output

SRS Warning Light Circuit

When power switch is turned on (IG), SRS warning light does not come on

SRS Warning Light Circuit

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 Terminals Of Ecu

TERMINALS OF ECU AIRBAG ECU ASSEMBLY Terminal No. Terminal Symbol Destination I58-1 P2+ Instrument panel passenger airbag assembly (Front passenger side squib 2nd step) I58-2 P2-

 Diagnosis System

DIAGNOSIS SYSTEM SYMPTOM SIMULATION HINT: The most difficult case in troubleshooting is when no problem symptoms occur. In such a case, a thorough problem analysis must be carried out. A simulation of

 Dtc Check / Clear

DTC CHECK / CLEAR CHECK DTC (a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG). (d) Turn the Techstream on. (e) Enter the following menus: Body El

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 Short Circuit in Power Source Circuit (C13A1)

DESCRIPTION The following DTCs are stored when a malfunction occurs in the parking brake ECU assembly. DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note C13A1 Short Circuit in Power Source Circuit Both of following conditions are met: Power switch on (IG

 System Diagram

SYSTEM DIAGRAM Circuit Description Component Outline Steering Lock ECU (Steering Lock Actuator Assembly) The steering is locked and unlocked by communicating with the certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU) via LIN communication. When th

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