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Toyota Sienna Service Manual: How to troubleshoot ecu controlled systems

Toyota Sienna Service Manual / Introduction / 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:

Wiper system
General information Do not use the wipers if the windshield is dry, as this may damage the wiper blades or cause them to become worn more quickly. Safety information Warning If the wipers start moving in the folded away state, body parts can be jammed or damage may occur to parts of the vehicle. Th ...

Distance Control ECU Power Source Circuit
DESCRIPTION This circuit provides power to operate the distance control ECU. The distance control ECU determines information about the vehicle in front based on data from the laser sensor, and then decides how much acceleration and/or deceleration is needed to maintain the set distance. The ...

Precaution
1. PRECAUTION FOR VEHICLE WITH SRS AIRBAG AND SEAT BELT PRETENSIONER Some operations in this section may affect SRS airbag system. Before performing the corresponding operations, please read the NOTICE of the SRS airbag for the proper operations. COMPONENTS ...

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