Page 944 of 1771
Position
The power flow when decelerating is as follows:
1. Rolling resistance from the road surface goes through the front wheels to the secondary drive gear, then to the coun-
tershaft 1st gear via the 1st-hold clutch which is applied during deceleration.
2. The one-way clutch disengages at this time because the application of torque is reversed.
3. The counterforce conveyed to the countershaft 1st gear turns the mainshaft 1st gear. At this time, since hydraulic
pressure is also applied to the 1st clutch, counterforce is also transmitted to the mainshaft. As a result, engine braking
can be obtained with 1st gear.
TORQUE CONVERTER
MAINSHAFT 1ST GEAR
1ST CLUTCH
MAINSHAFT
SECONDARY
DRIVE GEAR
COUNTERSHAFT
1ST-HOLD
CLUTCH
COUNTERSHAFT
1ST GEAR
SECONDARY DRIVEN GEARProCarManuals.com
Page 945 of 1771
Description
Power Flow (cont'd)
Position
Position is provided to drive only in 2nd gear.
1. Hydraulic pressure is applied to the 2nd clutch on the mainshaft, and power is transmitted via the 2nd clutch to the
mainshaft 2nd gear.
2. Power transmitted to the mainshaft 2nd gear is conveyed via the countershaft 2nd gear, which drives the counter-
shaft.
3. Power is transmitted to the secondary drive gear, which drives the secondary driven gear.
NOTE: Hydraulic pressure is also applied to the 1st clutch, but since the rotation speed of the 2nd gear exceeds that
of 1st gear, power from 1st gear is cut off at the one-way clutch.
TORQUE CONVERTER
2ND CLUTCH
MAINSHAFT
SECONDARY
DRIVE GEAR
COUNTERSHAFT
ONE-WAY
CLUTCH
COUNTERSHAFT
2ND GEAR
SECONDARY DRIVEN GEAR
MAINSHAFT
2ND GEARProCarManuals.com
Page 946 of 1771
In or position, the optimum gear is automatically selected from 1st, 2nd, 3rd, and 4th gears, according to conditions
such as the balance between throttle opening (engine load) and vehicle speed.
or Position, 1st gear
1. Hydraulic pressure is applied to the 1st clutch, which rotates together with the mainshaft, and the mainshaft 1st gear
rotates.
2. Power is transmitted to the countershaft 1st gear, which drives the countershaft via the one-way clutch.
3. Power is transmitted to the secondary drive gear, which drives the secondary driven gear.
NOTE: In or position, hydraulic pressure is not applied to the 1st-hold clutch.
TORQUE CONVERTER
MAINSHAFT 1ST GEAR
1ST CLUTCH
MAINSHAFT
COUNTERSHAFT
COUNTERSHAFT
1ST GEAR
ONE-WAY CLUTCH
SECONDARY DRIVEN GEAR
PARKING GEAR
SECONDARY
DRIVE GEARProCarManuals.com
Page 947 of 1771
Power Flow (cont'd)
or Position, 2nd gear
1. Hydraulic pressure is applied to the 2nd clutch, which rotates together with the mainshaft, and the mainshaft 2nd
gear rotates.
2. Power is transmitted to the countershaft 2nd gear, which drives the countershaft.
3. Power is transmitted to the secondary drive gear, which drives the secondary driven gear.
NOTE: In or position, 2nd gear, hydraulic pressure is also applied to the 1st clutch, but since the rotation speed
of 2nd gear exceeds that of 1st gear, power from 1st gear is cut off at the one-way clutch.
TORQUE CONVERTER
2ND CLUTCH
MAINSHAFT
SECONDARY
DRIVE GEAR
COUNTERSHAFT
ONE-WAY
CLUTCH
SECONDARY DRIVEN GEAR
Description
COUNTERSHAFT
2ND GEAR
MAINSHAFT
2ND GEARProCarManuals.com
Page 948 of 1771
or Position, 3rd gear
1. Hydraulic pressure is applied to the 3rd clutch. Power from mainshaft 3rd gear is transmitted to the countershaft 3rd
gear.
2. Power is transmitted to the secondary drive gear, which drives the secondary driven gear.
NOTE: In or position, 3rd gear, hydraulic pressure is also applied to the 1st clutch, but since the rotation speed
of 3rd gear exceeds that of 1st gear, power from 1st gear is cut off at the one-way clutch.
TORQUE CONVERTER
MAINSHAFT 3RD GEAR
MAINSHAFT
SECONDARY
DRIVE GEAR
COUNTERSHAFT
ONE-WAY
CLUTCH
COUNTERSHAFT 3RD GEAR
3RD CLUTCH
SECONDARY DRIVEN GEARProCarManuals.com
Page 949 of 1771
Description
Power Flow (cont'd)
Position, 4th gear
1. Hydraulic pressure is applied to the 4th clutch, which rotates together with the mainshaft, and the mainshaft 4th gear
rotates.
2. Power is transmitted to the countershaft 4th gear, which drives the countershaft.
3. Power is transmitted to the secondary drive gear, which drives the secondary driven gear.
NOTE: In position, 4th gear, hydraulic pressure is also applied to the 1st clutch, but since the rotation speed of 4th
gear exceeds that of 1st gear, power from 1st gear is cut off at the one-way clutch.
TORQUE CONVERTER
4TH CLUTCH
MAINSHAFT 4TH GEAR
MAINSHAFT
SECONDARY
DRIVE GEAR
COUNTERSHAFT
ONE-WAY
CLUTCH
REVERSE
SHIFT FORK
SECONDARY DRIVEN GEAR
COUNTERSHAFT
4TH GEAR
REVERSE SELECTOR
REVERSE
SELECTOR
HUBProCarManuals.com
Page 960 of 1771
Description
Hydraulic Control (cont'd)
ATF Pump Body
The ATF pump body is located on the torque converter housing. The ATF pump body consists of the ATF pump gears, the
lock-up control valve, the lock-up timing valve, the relief valve and the modulator valve. The torque converter check valve
is located between the ATF pump body and the torque converter housing.
Throttle Valve Body/Linear Solenoid
The throttle valve body is joined with the linear solenoid which is controlled by the TCM. The throttle valve body/linear
solenoid assembly is located on the 2nd accumulator body. The throttle valve body houses the throttle valve.
2nd Accumulator Body
The 2nd accumulator body is located on the torque converter housing beside the ATF pump body. It contains the 2nd
accumulator.
RELIEF VALVE
LOCK-UP CONTROL
VALVE
LOCK-UP TIMING
VALVE
TORQUE CONVERTER
CHECK VALVE
ATF PUMP BODY
ATF PUMP DRIVE GEAR
ATF PUMP DRIVEN GEAR
MODULATOR VALVE
LINEAR SOLENOID
THROTTLE VALVE
2ND ACCUMULATOR
2ND ACCUMULATOR
BODYProCarManuals.com
Page 961 of 1771
Hydraulic Flow
General Chart of Hydraulic Pressure
ATF Pump
Line Pressure
Modulator Pressure
Throttle B Pressure
Clutch Pressure
Torque Converter Pressure
Lubrication Pressure
Distribution of Hydraulic Pressure
Regulator Valve
Torque Converter Pressure
Lubrication Pressure
To Regulate Line Pressure
Manual Valve
Modulator Valve
To Select Line Pressure
Modulator Pressure
1-2 Shift Valve
2-3 Shift Valve
3-4 Shift Valve
Throttle Valve
Clutch Pressure
Throttle B Pressure
Clutch Pressure
Shift Control Solenoid Valves
Lock-up Control Solenoid Valves
Regulator ValveProCarManuals.com
