lock-up SUBARU FORESTER 2004 Service Service Manual

4AT(H4DOTC)-130
AUTOMATIC TRANSMISSION (DIAGNOSTIC)
Symptom Related Diagnostic
Shock occurs when select lever is shifted from “D” to “1” range.TCM
 Torque converter turbine speed sensor
 Accelerator pedal position sensor
 ATF temperature sensor
 Line pressure linear solenoid
 Control valve
 ATF deterioration
 Low & reverse brake duty solenoid
 Low & reverse clutch solenoid
Shock occurs when select lever is shifted from “2” to “1” range.TCM
 Torque converter turbine speed sensor
 Accelerator pedal position sensor
 ATF temperature sensor
 Line pressure linear solenoid
 Control valve
 Low & reverse clutch
 ATF deterioration
 2-4 brake duty solenoid
 Low & reverse brake duty solenoid
Shock occurs when accelerator pedal is released at medium
speeds.TCM
 Accelerator pedal position sensor
 ATF temperature sensor
 Line pressure linear solenoid
 Control valve
 Lock-up damper
 Engine performance
Vibration occurs during straight-forward operation.TCM
 Lock-up duty solenoid
 Lock-up facing
 Lock-up damper
HOLD switch
Vibration occurs during turns (tight corner “braking” phenome-
non).TCM
 Front vehicle speed sensor
 Rear vehicle speed sensor
 Accelerator pedal position sensor
 ATF temperature sensor
 Transfer clutch
Transfer valve
 Transfer duty solenoid
 ATF deterioration
Harness
HOLD switch
Front wheel slippage occurs during standing starts.TCM
 Front vehicle speed sensor
 Accelerator pedal position sensor
 ATF temperature sensor
 Control valve
 Transfer clutch
Transfer valve
 Transfer pipe
 Transfer duty solenoid
Vehicle is not set in FWD mode.TCM
 Transfer clutch
Transfer valve
 Transfer duty solenoid
Select lever is hard to move. Select cable
 Select lever
 Detente spring
 Manual plate Symptom Problem parts