Toyota Sienna Service Manual: Electronic circuit inspection procedure

General 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 troubleshoo ...

Basic inspection

(a) WHEN MEASURING RESISTANCE OF ELECTRONIC PARTS (1) Unless otherwise stated, all resistance measurements should be made at an ambient temperature of 20°C (68°F). Resistance measurements may b ...

Other materials:

Installation
1. INSTALL NO. 2 REAR SEAT OUTER BELT ASSEMBLY NOTICE: Do not disassemble the retractor.  Check the degree of tilt when the No. 2 rear seat outer belt assembly begins to lock the ELR.  Check that the belt does not lock within 15 of tilt in all directions but that the be ...

Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem
DTC P0121 Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem HINT: This DTC relates to the Throttle Position (TP) sensor. DESCRIPTION Refer to DTC P0120 DTC No. DTC Detection Condition Trouble Area P0121 Differen ...

Removal and installation of fuel control parts
(a) PLACE FOR REMOVING AND INSTALLING FUEL SYSTEM PARTS (1) Work in a location with good air ventilation that does not have welders, grinders, drills, electric motors, stoves, or any other ignition sources. (2) Never work in a pit or near a pit as vaporized fuel will collect in those places. ...