1998 HONDA INTEGRA clutch

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Llfl Position
As the engine turns, the ATF pump also starts to operate. Automatic transmission fluid (ATF) is drawn from (99) and
discharged into (1). Then, ATF pressure is controlled by the regulator valve and becomes line pressure (1). The torque
converter inlet pressure {92} enters (94) ol torque converter through the orilice and discharges into {9O).
The torque converter check valve prevents the torque converter pressure from rising.
Under this condition, the hydraulic pressure is not applied to the clutches.
NOTE: When used, "l€ft" or "right" indicates direction on the hydraulic circuit.
(cont'dl
14-29

Description
Hydraulic Flow (cont'dl
L! l Position
The line pressure ( 1 ) becomes line pressure (4) at the manual valve and passes to the 1st clutch and 1 st accumulator.
Then line pressure (4) llows through the 1st-hold clutch and 1st-hold accumulator.
Fluid flows bv wav of:- Line Pressure (4) - 1-2 Shift Valve - 2-3 Shitt Valve - 3rd Clutch Pressure (31) -- 3-4 Shift Valve - 4th Clutch
Pressure (41) - Manual Valve - lst-hold Clutch Pressure (15) - lsfhold Clutch
The modulator pressure (6) is supplied to the 1-2 and 2-3 shift valves.
The lane Dressure (1) also flows to the throttle valve B.
NOTE: When used, "left" or "right" indicates direction on the hydraulic ci.cuit.
14-30

LA Position
The line pressure (1) becomes line pressure (4) as it passes through the manual valve. lt then goes through line 120) to the
2nd clutch via the 1-2 and 2-3 shift valves. Also. line pressure (1) goes to the modulator valve through the filler and
becomes the modulator pressure (6). Modulator pressure (6) is not supplied to the 1-2. 2-3 and 3-4 shift valves because the
shift control solenoid valves A and B are turned ON bv the TCM.
NOTE; When use, "left" or "right" indicates direction on the hydraulic circuit.
(cont'd)
14-31

Description
Hydraulic Flow {cont'dl
l ll or &j Position
1. lst Geal
The flow of fluid through the torque converter circuit is the same as in lll postion.
The line pressure (1) becomes line pressure (4) and it becomes the 1st clutch pressure (10). The 1st clutch pressure is
applied to the 1st clutch and 1st accumulator; consequently, the vehicle will move as the engine power is transmitted.
The line pressure (1) becomes the modulator pressure (6) by the modulator valve and travels to 1-2 and 3-4 shift
valves. The l-2 shift valve is moved to the right side because the shift control solenoid valve A is turned OFF and B is
turned ON by the TCM. This valve stops 2nd clutch pressure and power is not transmitted to the 2nd clutch.
Line pressure (4) also flows to the servo valve and line pressure (l ) also flows to throttle valve B.
NOTE: When used, "|eft" or "right" indicates direction on the hydraulic circuit.
fr
14-32

Iznd Goar
The ftow ot fluid up the 1-2 shift valve is the same 8s in 1st gear. As the speed of the vehicle reaches the prescriabed
value, the shift control solenoid valve A is turned ON by means of the TCM. As a result, the 1-2 shift valve is moved to
the left and uncovers the port leading to the 2nd clutch; the 2nd clutch is engaged.
Fluid flows by way of:- Line pressure (4) -r 1-2 Shift Valve i 2-3 Shift Valve - znd Clutch Pressure (21) i 2nd Cluch
The hydraulic pressure also flows to the lst clutch. However, no pow€r is transmitted because ofthe one-way clutch.
NOTE: When used, "Ieft" or "right" indicates ditection on the hydraulic circuit.
14-33

Description
Hydraulic Flow (cont'dl
3rd Gear
The flow of fluid up to the 1-2 and 2-3 shift valve is the same as in 2nd gear. As the speed of the vehicle reaches theprescribed value. the shift control solenoid valve B is turned OFF (shift control solenoid valve A remains ON). The 2-3
shift valve is then moved to the left, uncovering the port leading to the 3rd clutch. Since the 3-4 shift valve is moved
to the right to vover the port to the 4th clutch, the 3rd clutch is turned on.
Fluid flows by way of:- Line pressure (4) rj) 1-2 Shift Valve + 2-3 Shift Valve - 3rd Clutch Pressure (31) r 3-4 Shift Valve(not controlledl - 3rd Clutch Pressure (30) + 3rd Clutch
The hydraulic pressure also flows to the lst clutch. However, no power is transmitted because of the one-way clutch
as in the 2nd gear.
NOTE: When used, "|eft" or "right" indicates direction on the hydraulic circuit.
14-34

Iq1 Position
4. 4th Gear
The flow of fluid up to the 1-2, 2-3 and 3-4 shift valves is the same as in 3rd gear. As the speed of the vehicle reaches
the prescribed value, the shift control solenoid valve A is turned OFF (shift control solenoid valve B remains OFF). As
this takes place, 3-4 shitt valve is moved to the left and uncovers the port leading to the 4th clutch. Since thel-2 and 2-
3 shift valves are kept on the left side, the fluid flows through the 4th clutch; the power is transmitted through the 4th
clutch.
Fluid flows by way of:- Line pressure (4) + 1-2 Shift Valve ) 2-3 Shift Valve - 3rd Clutch Pressure (3'1) -t 3-4 Shift Valve -
4th Clutch pressure (41) + Manual Valve - 4th Clutch Pressure (40) + 4th Clutch
The hvdraulic pressure also flows to the 1st clutch, However, no power is transmitted because of the one-way clutch
as in 2nd and 3rd gears.
NOTE: When used, "1eft" or "right" indicates direction on the hydraulic circuit.
I
T(cont'd)
14-35

Description
Hydraulic Flow (cont'dl
lll Position
The flow of fluid th.ough the torque converter circuit is the same as in S postion. The line pressure (1) tlows through themanual valve and becomes line pressure (3). lt then flows through the 1-2 shift valve to the servo valve via the servo con-trol valve, causing the shift fork shaft to be moved in the reverse direction.
Under this condition, the shift control solenoid valve A is turned ON whereas the valve B is turned OFF as in 3rd gear in
E ot O"- position. As a result. the 1-2 shift valve is also moved to the left. The fluid (3') will flow through tne servo varve
and manual valve to the 4th clutch; power is transmitted through the 4th clutch.
14-36
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