Subaru 2003 LEGACY Service Manual page 165

Transmission section
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Symptom
Shock occurs from 2nd to 3rd gear.
Slippage occurs from 2nd to 3rd gear.
Shock occurs from 3rd to 4th gear.
Slippage occurs from 3rd to 4th gear.
Shock occurs when select lever is moved from "3" to "2" range.
Shock occurs when select lever is moved from "D" to "1" range.
SYMPTOM RELATED DIAGNOSTIC
AT-163
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Problem parts
• TCM
• Throttle position sensor
• 2-4 brake duty solenoid
• ATF temperature sensor
• Line pressure duty solenoid
• Control valve
• High clutch
• 2-4 brake
• ATF deterioration
• Engine performance
• 2-4 brake timing solenoid
• TCM
• Throttle position sensor
• 2-4 brake duty solenoid
• ATF temperature sensor
• Line pressure duty solenoid
• Control valve
• High clutch
• 2-4 brake
• 2-4 brake timing solenoid
• TCM
• Throttle position sensor
• 2-4 brake duty solenoid
• ATF temperature sensor
• Line pressure duty solenoid
• Control valve
• 2-4 brake timing solenoid
• 2-4 brake
• ATF deterioration
• Engine performance
• Low clutch timing solenoid
• Low clutch
• TCM
• Throttle position sensor
• 2-4 brake duty solenoid
• ATF temperature sensor
• Line pressure duty solenoid
• Control valve
• 2-4 brake
• 2-4 brake timing solenoid
• TCM
• Throttle position sensor
• ATF temperature sensor
• Line pressure duty solenoid
• Control valve
• 2-4 brake duty solenoid
• 2-4 brake
• ATF deterioration
• 2-4 brake timing solenoid
• TCM
• Throttle position sensor
• ATF temperature sensor
• Line pressure duty solenoid
• Control valve
• ATF deterioration
• 2-4 brake duty solenoid
• 2-4 brake timing solenoid
• Low clutch timing solenoid

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