Reverse Block Above Eight Mph; Reverse Block - Mitsubishi Eclipse Technical Information Manual

Reverse Block Above Eight MPH

Reverse gear will not engage if the TCM senses
vehicle speed above eight mph. This is to prevent
damage that could occur if a driver accidentally
puts the gear selector in "R" while rolling in any
forward gear range. If the output speed sensor de-
tects that the output shaft is spinning at a speed
equal to or greater than eight mph, the TCM activates
reverse block to protect the transaxle. The function

REVERSE BLOCK

Shift to Rev. w/speed over 8 mph
POWER TRAIN
REVERSE BLOCK
SHIFT TO REV. Y/SPEED OVER 8 MPH
is inoperable in "limp-in" mode. To accomplish or
initiate reverse block, the TCM energizes the 2-4/LR
solenoid. The solenoid prevents line pressure from
applying the low/reverse clutch. Without a holding
element, the planetary gearset in this range will
provide no output. It must have both an input and
a holding element to provide output. In this condition,
the transaxle is effectively in Neutral.
LR = Low reverse
UD = Underdrive
AC = Accumulator
PT = Pressure tap
S = Solenoid
24 = 2-4 clutch
OD = Overdrive
SW = Switch
CC = Converter CL
D = Dribbler
V = Vent