Toyota Sienna Service Manual: How to troubleshoot ecu controlled systems

Vehicle lift and support locations

1. NOTICE ABOUT VEHICLE CONDITION WHEN JACKING UP VEHICLE (a) The vehicle must be unloaded before jacking up/ lifting up the vehicle. Never jack up/lift up a heavily loaded vehicle. (b) When re ...

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 ...

Other materials:

Diagnostic trouble code chart
COMMUNICATION DIAGNOSIS: DVD PLAYER: CD PLAYER IN-DASH CD CHANGER ...

No. 2 Speaker with box
COMPONENTS ON-VEHICLE INSPECTION 1. INSPECT NO.2 SPEAKER WITH BOX HINT: Remove interior parts so that the No.2 speaker with box can be seen.  Check the speaker installation. OK: The speaker is securely installed. If the result is not as specified, reinstall the No.2 s ...

System description
1. DESCRIPTION OF POWER REAR NO. 2 SEAT WITH STOWING FUNCTION  A power rear no. 2 seat with stowing function has been adopted for the third-row seats.  The power rear no. 2 seat with stowing function electrically stows and returns the seat when the power folding seat switch is ...