LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2017 >> Prius Prime Plus >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Key System (Keyless Start) - Diagnostic Codes & Symptom Tests >> SMART KEY SYSTEM (for Start Function) >> Symptom Tests >> Power Source Mode does not Change to ON (READY) [09/2016 - 05/2019] >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Power Source Mode does not Change to ON (READY) [09/2016 - 05/2019]: Description

When the electrical key transmitter sub-assembly is in the cabin and the power switch is pressed, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode. Additionally, when park (P) selected and the brake pedal is depressed, the hybrid control system can be started by pressing the power switch. If the gearshift control is unlocked, the hybrid control system can also be started by pressing the power switch with park (P) selected and the brake pedal depressed.

RELATED DATA LIST AND ACTIVE TEST ITEMS

Problem Symptom Data List and Active Test
Power source mode does not change to ON (READY) Power Source Control 
  • Stop Light Switch1
  • Latch Circuit
  • Starter Request Signal
  • Shift P Signal Pulse
  • Power Supply Condition
  • IG Relay Monitor (Outside)
  • IG Relay Monitor (Inside)

Smart Key 
  • Immobilizer
  • Engine Start Request
  • S Code Check
  • L Code Check
scientia non olet · About LEMON Manuals