Toyota Venza: System Description
SYSTEM DESCRIPTION
1. SYSTEM DESCRIPTION
(a) The Electronic Controlled Automatic Transaxle (ECT) is an automatic transaxle that has its shift timing electronically controlled by the Transmission Control Module (TCM). The TCM detects electrical signals that indicate engine and driving conditions, and controls the shift point, based on driver's habits and road conditions. As a result, fuel efficiency and transaxle performance are improved.
Shift shock has been reduced by controlling the engine and transaxle simultaneously.
In addition, the ECT has features such as:
- Diagnostic function.
- Fail-safe function for use when a malfunction occurs.
Parts Location
PARTS LOCATION
ILLUSTRATION
ILLUSTRATION
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System Diagram
SYSTEM DIAGRAM
The configuration of the electronic control system in the U660E automatic transaxle
is as shown in the following chart.
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Other materials about Toyota Venza:
Theft Deterrent System Communication Line High Fixation (B279A)
DESCRIPTION
If the communication line (EFIO-IMI) to the transponder key ECU assembly is stuck
high output (e.g. shorted to +B), the ECM stores this DTC.
DTC No.
DTC Detection Condition
Trouble Area
B279A
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VSC OFF Indicator Light does not Come ON
DESCRIPTION
The skid control ECU is connected to the combination meter via CAN communication.
WIRING DIAGRAM
Refer to VSC OFF Indicator Light Remains ON (See page
).
PROCEDURE
1.
CHECK CAN COMMUNICATION SYSTEM
(a) Check ...
Charge Warning Light Comes ON while Driving
PROCEDURE
1.
CHECK LOCK FUNCTION OF CLUTCH PULLEY
(a) Check the lock function with the pulley installed in the vehicle.
(1) Visually check that the rotor in the generator operates with the engine started.
(b) Check the lock ...
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