COMPONENTS

Installation
CalibrationGeneral information
A large number of ECU controlled systems are used in the
SIENNA. In general, ECU controlled systems are considered
to be very intricate, requiring a high level of technical
knowledge to troubleshoot. However, most problem checking
procedures only involve inspecting the ECU controlled
system's c ...
Identification information
VEHICLE IDENTIFICATION AND SERIAL NUMBERS
1. VEHICLE IDENTIFICATION NUMBER
(a) The vehicle identification number is stamped on the
vehicle identification number plate and the
certification label, as shown in the illustration.
A:
Vehicle Identification Number Plate
B:
  ...
Door Courtesy Switch Circuit
DESCRIPTION
The Multiplex network body ECU detects the condition of the door courtesy
switch assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
Connect the intelligent tester to DLC3.
Turn the ignition switch to ON and push the intelligent
tester ...