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:
Cruise Control Input Processor (P160700)
DESCRIPTION
When the ECM determines that there is a malfunction, the ECM illuminates the
MIL and stores a DTC.
HINT:
When these DTCs are stored, the ECM cuts the current supplied to the throttle
motor and the throttle valve returns to the predetermined opening amount by the
return spring.
...
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 ...
Automatic Disconnecting Differential Motor Limit Switch Circuit (P17A4)
DESCRIPTION
When the A.D.D. actuator switches between 2WD and 4WD, the DL1 and DL2 terminals
of the limit switch and ADD terminal of the A.D.D. position switch change to one
of the following ON/OFF combinations listed in the table below.
Terminal
In 2WD
Switchi ...
