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Fail Safe Function

WARNING: This page is about a different variant/trim than selected.

TCM malfunction in 1st or 2nd gear

CUTTING OFF THE E/C PRESSURE BY E/C VALVE

FAIL SAFE FUNCTION CHART

Speed	F/C	R/C	E/C	K/D
1st	◦
2nd	◦		◦
Fail	◦	◦

F/C, SR : from 2-3/4-3 shift valve
R/C : from PCV-B
SA : from 1-2 shift valve

Fig 1: TCM Malfunction In 1st Or 2nd Gear
Courtesy of KIA MOTORS AMERICA, INC.

TCM malfunction in 1st or 2nd gear

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

FAIL SAFE FUNCTION CHART

Speed	F/C	R/C	E/C	K/D
1st	◦
2nd	◦		◦
Fail	◦		◦

R/C, E/C, S/A : interlock

Fig 2: Identifying TCM Malfunction In 1st Or 2nd Gear
Courtesy of KIA MOTORS AMERICA, INC.
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