1986 TOYOTA CAMRY V20 Service Information

tow child seat inflation pressure dashboard coolant level oil change

Page 265 of 2389

TOYOTA CAMRY V20 1986 Service Information A140E Automatic Transaxle (ECT)
WHAT IS THE ECT?
ECT means Electronic Controlled Transaxle. The hydraulic control system of the previous automatic
transaxle has been changed, the throttle and governor

A140E Automatic Transaxle (ECT)
WHAT IS THE ECT?
ECT means Electronic Controlled Transaxle. The hydraulic control system of the previous automatic
transaxle has been changed, the throttle and governor pressure have been replaced by electronic
signals and a micro computer has been used to give precise control of shift timing and lock±up tim-
ing.
FEATURES OF THE ECT
(a) The shift pattern can be chosen.
In the ECT ECU micro computer used in the A140E, two types of shift pattern, Power and Normal,
are recorded in the memory. By operating the pattern select switch, the driver can select the pre-
ferred shift pattern.
(b) Reduced fuel consumption and reduced shock during shifting is made possible.
Precise control of the shift timing by the ECT ECU, operation of the lock±up clutch from low speeds,
and decreased fuel consumption are made possible. Also, shock during Shifting is reduced.
(e) Self±Diagnostic System
When a malfunction occurs in the electronic control system, the driver is informed of this fact. Also,
there is a Self±Diagnostic System which displays the location of the malfunction when the service
connector is shorted.
(d) Fail±Safe System
A fail±Safe System is included so that, even if a malfunction occurs in the electronic control system,
the vehicle will be able to operate.
CONSTRUCTION AND OPERATION
When the A140E (ECT) is compared with the A140L, the automatic transaxle body has the same
construction and operation, with the exception of the hydraulic control system, as the A140L.
The electronic control system, which controls the shift timing and lock±up timing, has been added.
1. Hydraulic Control System (Comparison with the A140L)
VALVE BODY ± Additions or changes to solenoid valve
In the A140E there are three solenoid valves, the No. 1, the No. 2 and the lock±up solenoid valves.
Shifting occurs according to whether the No. 1 and No. 2 solenoid valves are ON or OFF, and the
lock±up solenoid valve controls the lock±up clutch.
GOVERNOR VALVE ± Removed
With the A140E, the governor valve has been replaced with a speed sensor, so that instead of the
governor pressure, a speed sensor signal is sent to the ECT ECU.
SHIFT CONTROL IN ECT
1. The vehicle speed is sensed by the vehicle speed
sensor, which sends this data to the
ECU in the form of electrical signals.
2. The angle to which the throttle is open is sensed
by the throttle position sensor, which sends this
data to the ECU in the form of electrical signals.
3. The ECT computer determines the shift point on
the basis of these two signals and operates the
solenoid valves in the hydraulic control unit, thus
shifting the transmission.
± AUTOMATIC TRANSAXLEDescription (A140L and A140E)AT±9

Page 266 of 2389

TOYOTA CAMRY V20 1986 Service Information 2. Electronic Control System
COMPONENTS
The electronic control system for controlling the shift timing and the operation of the lock±up clutch
is composed of the following three parts:
(a) Sensors: T

Page 267 of 2389

TOYOTA CAMRY V20 1986 Service Information Shift cable out of adjustment
Valve body or primary regulator
faulty
Parking lock pawl faulty
Torque converter faulty
Converter drive plate broken
Oil pump intake screen blocked
Transaxle faulty
Shift

Shift cable out of adjustment
Valve body or primary regulator
faulty
Parking lock pawl faulty
Torque converter faulty
Converter drive plate broken
Oil pump intake screen blocked
Transaxle faulty
Shift cable out of adjustment
Throttle cable out of adjustment
Valve body faulty
Solenoid valve faulty
Transaxle faulty Throttle cable out of adjustment
Valve body or primary regulator faulty
Accumulator pistons faulty
Transaxle faultyInspect parking lock pawl
Replace torque converter
Replace drive plate
Clean screen
Disassemble and inspect
transaxle
Adjust shift cable
Adjust throttle cable
Inspect valve body
Inspect solenoid valve
Disassemble and inspect
transaxle
General Troubleshooting
Delayed 1±2, 2±3 or
3±O/D up±shift, or
down±shifts from
O/D±3 or 3±2 and
shifts back to O/D or 3Replace fluid
Replace torque converter
Disassemble and inspect
transaxle
Adjust shift cable
Inspect valve body
Disassemble and inspect
transaxle
Adjust shift cable
Inspect valve body
Disassemble and inspect
transaxle Shift cable out of adjustment
Manual valve and lever faulty
Transaxle faulty
Shift cable out of adjustment
Valve body faulty
Transaxle faultyInspect electronic control
Inspect valve body
Inspect solenoid valve Inspect accumulator pistons
Disassemble and inspect
transaxle
Electronic control faulty
Valve body faulty
Solenoid valve faulty Fluid contaminated
Torque converter faulty
Transaxle faulty
Slips on 1±2, 2±3
or 3±O/D up±shift,
or slips or shudders
on acceleration Vehicle does not
move in any forward
range or reverse
Drag, binding or tieup on
1±2, 2±3 or
3±4/D up±shift Harsh engagement into
any drive range
AT±22
AT±22
AT±133
AT±56 Adjust throttle cable
Inspect valve body
AT±121
AT±33 Adjust shift cable
Inspect valve body
Shift lever position
incorrect Fluid discolored or
smells burntAT±21
AT±156
AT±56
AT±22
AT±133
AT±56 AT±22
AT±133
AT±56
AT±24
AT±121
AT±33 AT±36
AT±133 AT±177
AT±56AT±121
AT±121 AT±22
AT±133
AT±22
AT±133 AT±72
AT±156 Possible cause
AT±121
AT±121 Problem
Remedy
A140E
A140LPage
AT±56
± AUTOMATIC TRANSAXLETroubleshooting (General Troubleshooting) (A140L. and
A140E)AT±12

Page 268 of 2389

TOYOTA CAMRY V20 1986 Service Information Adjust throttle cable
Inspect throttle cable and cam
Inspect accumulator pistons
Inspect valve body
Disassemble and inspect
transaxle
Inspect throttle cable
Inspect valve body
Disassemble and inspect

Page 269 of 2389

TOYOTA CAMRY V20 1986 Service Information Operating Mechanism for Each Gear (A140L A140E)
1. CLUTCH BRAKE AND ONE±WAY CLUTCH
Down±shift only ± no up±shift `Down±shift only ± no up±shift
Shift lever
position Shift lever
positionGear po

Page 270 of 2389

TOYOTA CAMRY V20 1986 Service Information 2. SOLENOID SYSTEM (A140E)
Possible gear positions in accordance with solenoid operating conditions.
A140E
NO. 1 SOLENOID
MALFUNCTIONINGNO. 2 SOLENOID
MALFUNCTIONINGBOTH SOLENOID
MALFUNCTIONING
( )

Page 271 of 2389

TOYOTA CAMRY V20 1986 Service Information Diagnosis System (A140E)
DESCRIPTION
1. A self±diagnosis function is built into the electrical control system.
Warning is indicated by the overdrive OFF indicator.
HINT: Warning and diagnostic codes

Page 272 of 2389

TOYOTA CAMRY V20 1986 Service Information wIn the event of a malfunction, the fight will blink once every
0.5 seconds. The number of blinks will equal the first num-
ber and, after 1.5 seconds pause, the second number of the
two digit diagnos

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