Toyota Sienna Service Manual: System description
1. SYSTEM DESCRIPTION
(a) The ECT (Electronic controlled automatic transmission/transaxle) is an automatic transmission/transaxle that electronically controls shift timing using the 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 has been reduced by controlling the engine and transmission simultaneously.
In addition, the ECT has features such as follows:
- Diagnostic function.
- Fail-safe function when a malfunction occurs.
Definition of terms
Term
Definition
Monitor description
Description of what the ecm monitors and how it detects malfunctions
(monitoring purpose and its details).
Related dtcs
Diagno ...
How to proceed with troubleshooting
Hint:
The ecm of this system is connected to the can and
multiplex communication system. Therefore, before
starting troubleshooting, make sure to check that there is
no trouble in the can an ...
Other materials:
Shift Solenoid "E" Control Circuit
DESCRIPTION
Shifting from 1st to 5th is performed in combination with "ON" and "OFF"
operation of the shift solenoid
valves SL1, SL2, SL3, S4 and SR which are controlled by the ECM. If an open or
short circuit occurs in
either of the shift solenoid valves, the ECM cont ...
Installation
1. INSTALL REAR NO. 2 SEAT ASSEMBLY
Lock the seat leg rear to the floor striker.
Lock the seat leg front to the floor striker.
Install the rear No. 2 seat assembly with the 6 bolts.
Torque: 19 N*m (194 kgf*cm, 14 ft.*lbf)
NOTICE:
Tighten the bolts in the order sho ...
Under hood
GENERAL MAINTENANCE
1. GENERAL NOTES
Maintenance requirements very depending on the
country.
Check the maintenance schedule in the owner's
manual supplement.
Following the maintenance schedule is mandatory.
Determine the appropriate time to service the vehicle
using either miles dri ...
