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Home >> Lexus >> 2017 >> GX 460 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Access System (Start Function) (Diagnostic Codes & Symptom Tests) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) >> Power Source Mode does not Change to ON (IG) [08/2015 - 08/2019] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • When using the Techstream with the engine switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: Body Electrical / Smart Access / Trouble Codes.
  • Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart (Refer to DTC CHECK / CLEAR [08/2015 - 08/2019] ).
  • The smart access system with push-button start uses multiplex communication. First perform the inspections in "How to Proceed with Troubleshooting" to confirm that there are no communication malfunctions before proceeding with troubleshooting (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2019] ).
  • If the smart access system with push-button start is disabled through the customize function, enable the system before performing troubleshooting (Refer to CUSTOMIZE PARAMETERS [08/2015 - 08/2019] ).
  • Inspect the fuses of circuits related to this system before performing the following inspection procedure.
  • After completing repairs, confirm that the problem does not occur.

HINT: 

RELATED DATA LIST AND ACTIVE TEST ITEMS

Problem Symptom Data List Item Active Test Item
Power source mode does not change to on (IG) but does change to on (ACC) Power Source Control 
  • Power Supply Condition
  • IG1 Relay Monitor(Inside)
  • IG2 Relay Monitor(Inside)
  • IG1 Relay Monitor(Outside)
  • IG2 Relay Monitor(Outside)
  • IG1 Circuit
  • IG2 Circuit

Starting Control 
  1. Ignition
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