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Toyota Sienna 2010-2026 Owners Manual: Emission inspection and maintenance (I/M) programs

Toyota Sienna 2010-2026 Owners Manual / Maintenance and care / Maintenance / Emission inspection and maintenance (I/M) programs

Some states have vehicle emission inspection programs which include OBD (On Board Diagnostics) checks. The OBD system monitors the operation of the emission control system.

If the malfunction indicator lamp comes on

The OBD system determines that a problem exists somewhere in the emission control system. Your vehicle may not pass the I/M test and may need to be repaired. Contact your Toyota dealer to service the vehicle.

Your vehicle may not pass the I/M test in the following situations:

When the malfunction indicator lamp still remains on after several driving trips

The error code in the OBD system will not be cleared unless the vehicle is driven 40 or more times

If your vehicle does not pass the I/M test

Contact your Toyota dealer to prepare the vehicle for re-testing.

Vehicle exterior
Items Check points Doors Do the doors operate smoothly? Engine hood Does the engine hood lock system work properly? ...

Do-it-yourself maintenance
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Other materials:

How to proceed with troubleshooting
HINT: *: Use the intelligent tester. 1 VEHICLE BROUGHT TO WORKSHOP 2 CUSTOMER PROBLEM ANALYSIS (a) Confirm problem symptoms 3 CHECK MULTIPLEX COMMUNICATION SYSTEM* Check if the multiplex communication system DTC is output. HINT: The center airbag sensor assembly of this system ...

Terminals of ecm
Sfi system Hint: The standard normal voltage between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals are also indicated. The check results should be compared with the standard normal voltage for that pair of te ...

How to use this manual
GENERAL INFORMATION 1. GENERAL DESCRIPTION (a) This manual is written in accordance with SAE J2008. (b) Repair operations can be separated mainly in the following 3 processes:     (1) Diagnosis             (2) Removing / Install ...

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