Acura 3.5 RL Manual page 489

Lower Valve Body Assembly
The lower valve body assembly is located on the bottom of the transmission housing. The lower valve body assembly
consists of the main valve body, the secondary valve body and the ATF passage.
Main Valve Body
The main valve body houses the manual valve, the 1-2 shift valve, the 2-3 shift valve, the 3-4 shift valve, the 4-3 kick-down
valve and the main orifice control valve. The primary functions of the main valve body are to switch fluid pressure on and
off and to control the hydraulic pressure going to the hydraulic control system.
Secondary Valve Body
The secondary valve body is located on the main valve body. The secondary valve body houses the line pressure control
valve, the modulator valve, the 3-4 orifice control valve, the 4-3 shift timing valve, the 1st accumulator piston and the 2nd
accumulator piston. The shift solenoid valves A and B are assembled on the secondary valve body.
Throttle Valve Body/A/T Clutch Pressure Control Solenoid Valve
The throttle valve body is joined with the A/T clutch pressure control solenoid valve which is controlled by the PCM. The
throttle valve body/A/T clutch pressure control solenoid valve is located on the secondary valve body. The throttle valve
body houses the throttle valve.
SHIFT SOLENOID
VALVE B
SHIFT SOLENOID
VALVE A
MODULATOR VALVE
1ST ACCUMULATOR
PISTON
SECONDARY VALVE
BODY
MAIN VALVE BODY
MANUAL VALVE
MAIN ORIFICE CONTROL VALVE
LINE PRESSURE
CONTROL VALVE
A/T CLUTCH PRESSURE CONTROL
SOLENOID VALVE
1-2 SHIFT VALVE
THROTTLE VALVE BODY
THROTTLE VALVE
2ND ACCUMULATOR
PISTON
3-4 ORIFICE CONTROL
VALVE
4-3
SHIFT TIMING VALVE
4-3 KICK-DOWN
VALVE
3-4 SHIFT VALVE
2-3 SHIFT VALVE