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Home >> Kia >> 2010 >> Sedona Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System >> Electronic Throttle System (ETS) >> Repair procedures >> Schematic Diagram
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Schematic Diagram

Fig 1: Electronic Throttle System - Schematic Diagram
G06838095Courtesy of KIA MOTORS AMERICA, INC.

FAIL-SAFE MODE 

FAIL-SAFE

Mode Description Symptom Possible Cause
MODE 1 FORCED ENGINE SHUTDOWN Engine stop
  • ETC system can't proceed reliable algorithm procedure
    • Fatal PCM internal programming error
    • Faulty intake system or throttle body
MODE 2 FORCED IDLE & POWER MANAGEMENT Forced idle state controlled by fuel quantity regulation and ignition timing adjustment
  • ETC system can't control engine power via throttle device
  • Disabled throttle control or broken throttle position information
MODE 3 FORCED IDLE Forced idle state and no response for accelerator activation
  • No information about the accelerator position
    • Malfunctioning APS 1 and 2, faulty A/D converter or internal controller
MODE 4 LIMIT PERFORMANCE & POWER MANAGEMENT Engine power is determined by accelerator position and idle power requirement (Limited vehicle running)
  • ETC system can't securely control engine power
MODE 5 LIMIT PERFORMANCE
  1. Engine power varies with accelerator position, but driver perceives lack of engine power.
  2. MIL ON (Normal vehicle running)
  • Not reliable accelerator position signal or bad maximum power generation
    • Faulty APS, ignition voltage or internal controller
MODE 6 NORMAL Normal  
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