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Home >> Lexus >> 2012 >> IS F >> Repair and Diagnosis >> Electrical >> Starter >> Smart Access System (Keyless Start) (Diagnostics - Introduction) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) >> Problem Symptoms Table >> Problem Symptoms Table
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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.

SMART ACCESS SYSTEM WITH PUSH-BUTTON START

Symptom Suspected Area Refer To
Power Source Mode does not Change AM2 Fuse Refer to Power Source Mode does not Change
Engine Switch -
Main Body ECU RH (Cowl Side Junction Block RH) -
Main Body ECU LH (Cowl Side Junction Block LH) -
IG2 Relay -
Wire Harness or Connector -
Power Source Control ECU -
Engine does not Start. Power Source Control ECU Refer to Engine does not Start
Certification ECU (Smart Key ECU Assembly) -
Shift Lock Control ECU -
ID Code Box (Immobiliser Code ECU) -
Stop Light Switch -
Electrical Steering Lock Function -
SFI System -
Engine Immobiliser System -
Wire Harness or Connector -
Engine Switch Indicator Light does not Come On. Engine switch indicator light circuit Refer to Engine Switch Indicator Circuit