Toyota Tacoma (2015-2018) Service Manual: System Description
SYSTEM DESCRIPTION
1. SYSTEM DESCRIPTION
(a) The Electronic Controlled Automatic Transmission (ECT) is an automatic transmission that has its shift timing electronically controlled by the ECM. The ECM 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 transmission performance are improved.
Shift shock has been reduced by controlling the engine and transmission simultaneously.
In addition, the ECT has features such as:
- Diagnostic function.
- Fail-safe function for use when a malfunction occurs.
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
The ECM of this system is connected to the CAN communication system.
Therefore, before starting troubleshooting, make sure to check that there
is no tro ...
System Diagram
SYSTEM DIAGRAM
The configuration of the electronic control system in the AC60E automatic transmission
is as shown in the following chart.
...
Other materials:
Torque Converter Clutch Circuit Short to Battery or Open (P074015)
DESCRIPTION
Shift solenoid valve SL is turned on and off by signals from the ECM to control
the hydraulic pressure acting on the lock-up relay valve, which then controls operation
of the lock-up clutch.
DTC No.
DTC Detection Condition
Trouble Area
SA ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT CURTAIN SHIELD AIRBAG ASSEMBLY (for Vehicle not Involved in Collision)
(a) Perform a Diagnostic System Check (See page
).
(b) With the curtain shield airbag installed on the vehicle, perform
a visual check. If any of the defects mention ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use these procedures to troubleshoot the forward recognition camera
system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
...
