Toyota 4Runner: System Description
SYSTEM DESCRIPTION
1. SYSTEM DESCRIPTION
(a) The Electronic Controlled Automatic Transmission (ECT) is an automatic transmission that electronically controls shift timing using the Engine Control Module (ECM). The ECM detects electrical signals that indicate engine and driving conditions, and controls the shift point based on driver habits and road conditions. As a result, fuel efficiency and power transmission performance are improved.
Shift shock is reduced by controlling the engine and transmission simultaneously.
In addition, the ECT has the following features:
- Diagnostic function.
- Fail-safe function when a malfunction occurs.
System Diagram
SYSTEM DIAGRAM
The configuration of the electronic control system for the A750E automatic transmission
is as shown in the following chart.
...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
The ECM is connected to the CAN communication system. Therefore, before
starting troubleshooting, make sure to check that there is no trouble in
the CAN ...
Other materials about Toyota 4Runner:
Installation
INSTALLATION
CAUTION / NOTICE / HINT
NOTICE:
Take extra care when handling these precision electronic components.
PROCEDURE
1. INSTALL TRANSMITTER BATTERY
(a) Install the battery (lithium battery: CR2016) with the positive (+)
side facing ...
Telephone Microphone Error (B1572)
DESCRIPTION
This DTC is stored when the DCM (Telematics Transceiver) detects a malfunction
in the telephone microphone assembly circuit.
DTC Code
DTC Detection Condition
Trouble Area
B1572
Curren ...
0.0275