1986 TOYOTA CAMRY V20 display

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transaxle has been changed, the throttle and governor pressure have been replaced by electronic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

1. SETTING SYSTEM
The system is in operation once the customer has pushed the required buttons and entered the custom-
erselected 3±digit ID number.
(Refer to the 0/M section, ºSetting the anti±theft systemº')
HINT:
wWhen the audio system is shipped the ID number has not been input, so the anti±theft system is
not in operation.
wIf the ID number has not been input, the audio system remains the same as a normal audio system.
2. ANTI±THEFT SYSTEM OPERATION
If the normal electrical power source (connector or battery terminal) is cut off, the audio system becomes
inoperable, even if the power supply resumes.
3. CANCELLING SYSTEM
The ID number chosen by the customer is input to cancel the anti±theft system.
(Refer to the 0/M section, ºif the system is activatedº)
HINT: To change or cancel the ID number, please refer to the 0/M section, ºCancelling the systemº.
AUDIO SYSTEM
System Description
Anti±Theft System (USA only)
The anti±theft system is only provided for audio systems
equipped with an Acoustic Flavor function.
HINT: The words º'ANTI±THEFT SYSTEMº are displayed
on the cassette tape slot cover.
For operation instructions for the anti±theft system,
please consult the audio system section in the Owner's
Manual (hereafter called O/M).
Tape player okay but no sound from AM and FM or either one.No power to radio or tape player, or power but no sound.
Sound quality bad when tape player played.
DEFECTIVE AUTO±SEARCH
MECHANISMSound quality bad when radio played. DEAD RADIO AND TAPE PLAYER
No sound from one speaker.
BAD SOUND QUALITY FAINT RECEPTIONProblem
*(a)
No.
Troubleshooting
HINT: For audio systems with anti±theft system, troubleshoot-
ing items marked (*) indicate that ºTroubleshooting for ANTI±
THEFT SYSTEMº should be carried out first.
± BODY ELECTRICAL SYSTEMAudio SystemBE±93

HINT:
wRefer to 0/M for operation details of ANTI±THEFT SYSTEM.
wWhen the ID number has been cancelled, reset the same number after completing the operation, or in-
form the customer that it has been cancelled.ANTI±THEFT SYSTEM
operating condition.
(ID number input error 5
times) Take to designated
radio service station. While holding the 1, 4 and6
buttons in. Push and hold the
ºPVIIR VOLº knob. Check
display.
ANTI±THEFT SYSTEM
operating condition.
(ID number input error 4
times or less)
ANTI±THEFT SYSTEM not cancelled. ID number input 5 times or more?
Troubleshooting for ANTI±THEFT SYSTEM
Turn ignition key from LOCK position to ACC position.
ANTI±THEFT SYSTEM cancelled.
Check audio system again.
(Liquid Crystal Display (LCD) for Audio System)Cancel ID number, refer to each malfunction item.Cancel ID number, refer to each malfunction
item. Normal operation when radio
switch turned ON?
Take to designated radio service station.Refer to each malfunction
item.
ºSECº display disappears
after 1 second.ID number not input.
(Display D)
ID number not
input, or else
input error. After 2 seconds
Display C ± A Input ID number, check display.Forgot to press switch. Radio switch turned 4N. Display A showing?
Display B showing? ID nubmer is set.
Display A or BDisplay
EDisplay
B
Display DYe s
Ye sYe s Ye s
Ye s
± BODY ELECTRICAL SYSTEMAudio SystemBE±94

Sub±Oxygen Sensor (CALIF. only)
INSPECTION OF SUB±OXYGEN
SENSOR
INSPECT SUB±OXYGEN SENSOR
HINT: Inspect only when code No.27 is displayed.
(a) Diagnostic code cancellation.
(See page FI±24)
(b) Warm up the engine until it reaches normal operating
temperature.
(a) (M/T)
Drive for 5 minutes or more between 80 km/h (50
mph) and 100 km/h in 4th or 5th gear.
(A/T)
Drive for 5 minutes or more between 80 km/h (50
mph) and 100 km/h (62 mph) in ºDº range.
(d) Following the conditions in step (e), press fully on the
accelerator pedal for 2 seconds or more.
HINT: Do not exceed 100 km/h (62 mph), or diagnostic code
will be cancelled.
(e) Stop the vehicle and turn the ignition switch to OFF.
(f) Carry out steps (b), (c) and (d) again to test acceleration.
If code No. 27 reappears again, check the sub±oxygen sensor
circuit. If the circuit is normal, replace the suboxygen sen-
sor. 3. (2VZ±FE)
INSPECT HEATER RESISTANCE OF OXYGEN
SENSOR
Using an ohmmeter, measure the resistance between the
terminal +B and HT.
Resistance (Cold): 5.1 6.3
at 20°C (68°F)
If the resistance is not as specified, replace the sensor.
± EFI SYSTEMElectronic Control System (Main Oxygen SensorFI±131

Sub±Oxygen Sensor (CALIF. only)
INSPECTION OF SUB±OXYGEN
SENSOR
INSPECT SUB±OXYGEN SENSOR
HINT: Inspect only when code No.27 is displayed.
(a) Diagnostic code cancellation.
(See page FI±24)
(b) Warm up the engine until it reaches normal operating
temperature.
(a) (M/T)
Drive for 5 minutes or more between 80 km/h (50
mph) and 100 km/h in 4th or 5th gear.
(A/T)
Drive for 5 minutes or more between 80 km/h (50
mph) and 100 km/h (62 mph) in ºDº range.
(d) Following the conditions in step (e), press fully on the
accelerator pedal for 2 seconds or more.
HINT: Do not exceed 100 km/h (62 mph), or diagnostic code
will be cancelled.
(e) Stop the vehicle and turn the ignition switch to OFF.
(f) Carry out steps (b), (c) and (d) again to test acceleration.
If code No. 27 reappears again, check the sub±oxygen sensor
circuit. If the circuit is normal, replace the suboxygen sen-
sor. 3. (2VZ±FE)
INSPECT HEATER RESISTANCE OF OXYGEN
SENSOR
Using an ohmmeter, measure the resistance between the
terminal +B and HT.
Resistance (Cold): 5.1 6.3
at 20°C (68°F)
If the resistance is not as specified, replace the sensor.
± EFI SYSTEM
Sub±Oxygen Sensor (CALIF. only)FI±131

PRECAUTIONS FOR VEHICLES WITH AN
AUDIO SYSTEM WITH BUILT±IN ANTI±THEFT
SYSTEM
Audio Systems displaying the sign ºANTI±THEFT
SYSTEMº shown on the left has a built±in anti±theft
system which makes the audio system soundless if
stolen. If the power source for the audio system is cut
even once, the anti±theft system operates so that
even if the power source is reconnected, the audio
system will not produce any sound unless the ID
number selected by the customer is input again.
Accordingly, when performing repairs on vehicles
equipped with this system, before disconnecting the
battery terminals or removing the audio system the
customer should be asked for the ID number so that
the technician can input the ID number afterwards, or
else a request made to the customer to input the
ID number. For the method to input the ID number or
cancel the anti±theft system, refer to the Owner's
Manual.
± INTRODUCTIONPrecautions for Vehicles with an Audio System with
Built±in Anti±Theft SystemIN±7