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Home >> Lexus >> 2017 >> RC 300 Base >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Smart Access System (For Start) - Symptom Tests >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) >> Engine does not Start [09/2014 - 10/2015] >> Description
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Engine does not Start [09/2014 - 10/2015]: Description

When the electrical key transmitter sub-assembly is in the cabin and the engine switch is pressed, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode. In addition, when the shift lever is in P and the brake pedal is depressed, the engine can be started by pressing the engine switch. If the steering is unlocked, the engine can also be started by pressing the engine switch with the shift lever in N and the brake pedal depressed.

RELATED DATA LIST AND ACTIVE TEST ITEMS

Problem Symptom Data List and Active Test
Engine does not start Power Source Control 
  • Stop Light Switch1
  • Steering Unlock Switch
  • Shift P Signal
  • Neutral SW/ Clutch SW
  • IG Relay Monitor (Inside)
  • IG Relay Monitor (Outside)
  • Latch Circuit
  • Starter Request Signal
  • Power Supply Condition

Smart Access 

  • Immobiliser
  • Engine Start Request
  • S Code Check
  • L Code Check

Starting Control 

  • Starter SW
  • Shift Position P or N
  • Ignition