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Home >> Hyundai >> 2005 >> Accent GT, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle System >> Hydraulic Control System >> Pressure Control Valve A, B >> Fail Safe Function
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Fail Safe Function

  1. TCM fail when drive with 1st or 2nd speed.
    CUTTING OFF THE E/C PRESSURE BY E/C VALVE

    Speed F/C R/C E/C K/D
    1st.   X    
    2nd.   X   X
    Fail X X    
    • F/C, SR: from 2-3/4-3 shift valve
    • R/C: from PCV-B
    • SA: from 1-2 shift valve
      Fig 1: Control Switch Valve And E/C Valve - 1-2 Shift Valve
      G03852305Courtesy of HYUNDAI MOTOR CO.
  2. TCM fail when drive with 1st or 2nd speed.

    If the hydraulic pressure is supplied to E/C and the F/C, SR pressure is delayed?

    HYDRAULIC PRESSURE IS SUPPLIED TO E/C AND THE F/C, SR PRESSURE IS DELAYED

    Speed F/C R/C E/C K/D
    1st.   X    
    2nd.   X   X
    Fail   X X X
    • R/C, E/C, SA: Interlock
      Fig 2: Control Switch Valve And E/C Valve - SA Interlock
      G03852306Courtesy of HYUNDAI MOTOR CO.
    NOTE:
    • SA: Servo Apply pressure
    • F/C: Front Clutch pressure
    • R/C: Rear Clutch pressure
    • K/D: Kick Down
    • SCV: Shift Control Valve
    • CSV: Control Switch Valve
    • PCSV: Pressure Control Solenoid Valve
    • SCSV: Shift Control Solenoid Valve
    • PCV: Pressure Control Valve
    • RCEV: Rear Clutch Exhaust Valve
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