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 Pressure Control Solenoid Control Circuit Open (P275613)
DESCRIPTION
Refer to the system description for DTC P27567F (See page
).
DTC No.
DTC Detection Condition
Trouble Area
SAE
P275613
Open or short is detected in shift solenoid valve SLU circuit for 1 second
or more while d ...
Removal
REMOVAL
PROCEDURE
1. REMOVE MANUAL TRANSMISSION ASSEMBLY
(See page )
2. REMOVE CLUTCH RELEASE FORK SUB-ASSEMBLY
(a) Remove the clutch release fork sub-assembly with the clutch release
bearing assembly from the manual transmission assembly.
...
Pressure Control Solenoid "A" Performance (Shift Solenoid Valve SL1) (P0746)
SYSTEM DESCRIPTION
The ECM uses the vehicle speed signal and signals from the transmission revolution
sensors (NT, SP2) to detect the actual gear (1st, 2nd, 3rd, 4th, 5th or 6th gear).
The ECM compares the actual gear with the shift schedule in the ECM memory to
detect mechanical problems of t ...
