Toyota RAV4 manuals

Toyota Sienna Service Manual: 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 troubleshoot. However, most problem checking procedures only involve inspecting the ECU controlled system's circuits one by one. An adequate understanding of the system and a basic knowledge of electricity is enough to perform effective troubleshooting, accurate diagnoses and necessary repairs.

FOR USING INTELLIGENT TESTER

(1)If communication is normal when the tester is connected to another vehicle, inspect the diagnosis data link line (Bus (+) line) or ECU power circuit of the vehicle.

(2)If communication is still not possible when the tester is connected to another vehicle, the problem is probably in the tester itself. Perform the Self Test procedures outlined in the tester operator's manual.

How to troubleshoot ecu controlled systems
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Electronic circuit inspection procedure
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Other materials:

Wireless remote control/ electronic key battery
Replace the battery with a new one if it is depleted. You will need the following items: Flathead screwdriver Lithium battery CR2032 Replacing the battery Vehicles without a smart key system Remove the cover using a coin protected with tape etc. Remove the deplete ...

Display contents
The multi-information display presents the driver with a variety of vehicle data. Menu icons Displays the following information when an icon is selected. Some of the information may be displayed automatically depending on the situation. Drive information Select to display various ...

Removal
1. REMOVE REAR BUMPER COVER Put protective tape under the quarter panel. Partially the fender liner. HINT: Do not remove the fender liner completely but partially so that the bumper cover can be removed. Remove the 2 screws and 8 clips. Using a screwdriver, disengage the claws an ...

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