Honda Accord 2008 Manual page 913

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07/11/02 08:47:15 61TA0000_140_0070

Automatic Transmission

System Description (cont'd)

Hydraulic Flow (cont'd)

R Position: Driving in reverse gear

After starting off in reverse gear, the PCM turns shift solenoid valve A ON, and B and E remain ON, and C and D

remain OFF. Shift solenoid valve A pressure (SA) is applied to the right side of shift valve A to cover the A/T clutch

pressure control solenoid valve A pressure port, and to uncover the line pressure port leading to the 4th clutch

creating full line pressure. The 4th clutch is engaged securely with line pressure.

Reverse Inhibitor Control

When R is selected while the vehicle is moving forward, the PCM commands shift solenoid valve A to turn OFF, and E

to remain OFF. Shift solenoid valve A pressure (SA) is not applied to shift valve A so that line pressure (3A) is not

applied to the servo valve. Also shift solenoid valve E pressure (SE) is not applied to shift valve E so that line pressure

(3') is not applied to the servo valve. The servo valve cannot be shifted to the reverse position, and hydraulic pressure

is not applied to the 4th clutch from the servo valve for reverse; as a result, power is not transmitted to the reverse

NOTE: When used, ''left'' or ''right'' indicates direction on the hydraulic circuit.

TRANSMISSION

FLUID PRESSURE

COUNTERSHAFT

RELIEF VALVE

REGULATOR VALVE

MANUAL VALVE

TRANSMISSION

FLUID PRESSURE

SERVO CONTROL

A/T CLUTCH PRESSURE

CONTROL SOLENOID VALVES

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