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:

Removal
HINT: Replace the RH side using the same procedures as for the LH side. 1. REMOVE FRONT WHEEL 2. REMOVE FRONT AXLE HUB LH NUT (See page DS- 5) 3. SEPARATE SPEED SENSOR FRONT LH (See page DS-5) 4. SEPARATE FRONT DISC BRAKE CALIPER ASSEMBLY LH (a) Remove the 2 bolts and separate the front ...

System description
1. OUTLINE  As a unique feature of Rear Seat Entertainment (RSE) system, the front and rear seat occupants can enjoy different audio-visual modes at the same time. Thus, this system offers enhanced entertainment to the rear seat occupants. The rear seat occupants can control the ...

Front No. 1 speaker
COMPONENTS ON-VEHICLE INSPECTION 1. INSPECT FRONT NO.1 SPEAKER HINT: Remove interior parts so that the front No.1 speaker can be seen.  Check the speaker installation. OK: The speaker is securely installed. If the result is not as specified, reinstall the front No.1 spe ...