Overhaul - RO: Description
Automatic transaxle is electronically controlled with 4 forward speeds and one reverse speed. Transaxle consists of clutches, mainshaft, countershaft, secondary shaft, shift control solenoid valves, lock-up control solenoid valves and lock-up torque converter. See Fig 1 .
Valve assembly consists of main valve body, secondary valve body, servo valve body and regulator valve body. Transaxle shifting and torque converter lock-up are controlled by the Automatic Transaxle Control Unit (ATCU).
An "S4" switch is mounted on the shift lever in the vehicle. With "S4" switch depressed (ON position), transaxle will shift into 4th gear ("S4") range when shift lever is in the "S" position, and "S4" light on the instrument panel will come on. With "S4" switch released (OFF position), transaxle will shift into 3rd gear, "S4" light will go off, and "S" light on instrument panel will come on. If shift lever is moved to any position other than "S" position, "S4" switch will be released automatically.