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Toyota Sienna Service Manual: For vehicles equipped with catalytic converter

Toyota Sienna Service Manual / Introduction / Repair instruction / Precaution / For vehicles equipped with catalytic converter

CAUTION: If a large amount of unburned gasoline or gasoline vapors flow into the converter, it may cause overheating and create a fire hazard. To prevent this, observe the following precautions:

(a) Use only unleaded gasoline.

(b) Avoid idling the engine for more than 20 minutes.

(c) Avoid performing unnecessary spark jump tests.

(1) Perform a spark jump test only when absolutely necessary. Perform this test as rapidly as possible.

(2) While testing, never race the engine.

(d) Avoid a prolonged engine compression measurement. Engine compression measurements must be performed as rapidly as possible.

(e) Do not run the engine when the fuel tank is nearly empty. This may cause the engine to misfire and create an extra load on the converter.

When towing full-time 4wd vehicles
Use one of the methods shown below to tow the vehicle. If the vehicle has trouble with the chassis or drive train, use method 1 (flat bed truck). WHEN TOWING FULL-TIME 4WD VEHICLES ...

Precaution for cooling fan system
NOTICE: • When the ignition switch is turned off and the engine temperature is high, the cooling fans may operate for approximately 3 minutes. • After turning the ignition switch off, ke ...

Other materials:

Removal
1. REMOVE NO. 1 REAR SEAT OUTER BELT ASSEMBLY (for 8-Passenger) HINT: Refer to the instructions for disassembly of the rear No .1 seat assembly (for center seat).  Remove the rear seatback board.  Remove the rear seat shoulder belt cover.  Remove the 2 bolts, 2 nuts and N ...

Random / Multiple Cylinder Misfire Detected
DESCRIPTION When the engine misfires, high concentrations of hydrocarbons (HC) enter the exhaust gas. High HC concentration levels can cause increase in exhaust emission levels. Extremely high concentrations of HC can also cause increases in the Three-Way Catalytic Converter (TWC) tem ...

Open or Short Circuit in ABS Motor Relay Circuit
DESCRIPTION The ABS motor relay supplies power to the ABS pump motor. While the ABS & TRAC & VSC are activated, the ECU switches the ABS motor relay ON and operates the ABS pump motor. WIRING DIAGRAM INSPECTION PROCEDURE 1 PERFORM ACTIVE TEST USING INTELLIGENT TESTER (AB ...

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