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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:

System Voltage
DTC P0560 System Voltage MONITOR DESCRIPTION The battery supplies electricity to the ECM even when the ignition switch is off. This power allows the ECM to store data such as DTC history, freeze frame data and fuel trim values. If the battery voltage falls below a minimum level, these memori ...

Transmitter ID1 Error
DESCRIPTION The tire pressure warning valve and transmitters that are installed in the tire and wheel assemblies measure the air pressure of the tires. The measured values are transmitted to the tire pressure warning antenna and receiver on the body as radio waves and then sent to the tir ...

Air conditioning controls
Adjusting the temperature setting Turn the “TEMP” dial clockwise to increase the temperature and counterclockwise to decrease the temperature. The “SYNC” button The air conditioning system switches between individual (indicator( s) off) and simultaneous (indicators on) modes. Whe ...

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