Chrysler Town & Country/Voyager, Dodge Caravan, Plymouth Voyager. Manual - part 84
reapplies to maintain that speed until the apply ele-
ment is filled. This provides quick response since the
engine begins to accelerate immediately and a smooth
torque exchange since the release element can control
the rate of torque increase. This control can make any
power train feel more responsive without in creasing
harshness.
Adaptive controls respond to input speed changes.
They compensate for changes in engine or friction
element torque and provide good, consistent shift qual-
ity for the life of the transaxle.
ON-BOARD DIAGNOSTICS
These controls also provide comprehensive, on-board
transaxle diagnostics. The information available can
aid in transaxle diagnosis. For example, apply element
buildup rate indicates solenoid performance. Also in-
cluded are self-diagnostic functions which allow the
technician to test the integrity of the electronic controls
without requiring a road test. The controller continu-
ously monitors its critical functions, records any mal-
functions, and the number of engine starts since the
last malfunction. The technician can use this informa-
tion in the event of a customer complaint.
GENERAL DIAGNOSIS
CAUTION: Before attempting any repair on a Elec-
tronic Automatic Transaxle, check for fault codes
with the DRBII. Always use the ‘‘Powertrain Diagnos-
tic Test Procedure Manual.’’
Electronic automatic transaxle malfunctions may be
caused by these general conditions:
• Poor engine performance
• Improper adjustments
• Hydraulic malfunctions
• Mechanical malfunctions
• Electronic malfunctions
Diagnosis of these problems should always begin by
checking the easily accessible variables: fluid level and
condition, gearshift cable adjustment. Then perform a
road test to determine if the problem has been cor-
rected or that more diagnosis is necessary. If the
problem exists after the preliminary tests and correc-
tions are completed, hydraulic pressure checks should
be performed.
DIAGNOSIS GUIDE-VEHICLE WILL NOT MOVE
.
TRANSAXLE
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