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Toyota Sienna 2010-2021 Owners Manual: Emission inspection and maintenance (I/M) programs

Toyota Sienna 2010-2021 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
...

Other materials:

Removal
1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM (See page AC-172) 2. REMOVE FRONT WHEEL RH 3. REMOVE FRONT FENDER APRON SEAL RH (See page EM-26) 4. REMOVE V-RIBBED BELT (See page EM-6) 5. REMOVE RADIATOR AND FAN ASSEMBLY (See page CO-28) 6. DISCONNECT DISCHARGE HOSE SUB-ASSEMBLY (a) Re ...

Camshaft Position "A" - Timing Over
HINT: If DTC P0011, P0012, P0021 or P0022 is present, check the VVT (Variable Valve Timing) system. DESCRIPTION Refer to DTC P0010 (See page ES-75). DTC No. DTC Detection Condition Trouble Area P0011 P0021 Advanced cam timing: With warm engine and engine spee ...

Inspection
1. INSPECT NO. 1 VALVE ROCKER ARM SUBASSEMBLY (a) Turn the roller by hand to check that it turns smoothly. HINT: If the roller does not turn smoothly, replace the valve rocker arm sub-assembly. 2. INSPECT VALVE LASH ADJUSTER ASSEMBLY NOTICE: Keep the lash adjuster free of dirt ...

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