Toyota Yaris: Cooling Fan System / System Diagram
SYSTEM DIAGRAM

ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT COOLING FAN SYSTEM CAUTION: To prevent injury due to contact with an operating cooling fan, keep your hands and clothing away from the cooling fan when inspecting the cooling fan system...
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CAUTION / NOTICE / HINT HINT: Use these procedures to troubleshoot the heated steering wheel system. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
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2. INSPECT AUXILIARY BATTERY (a) Measure the auxiliary battery voltage with the ignition switch off...
INSTALLATION PROCEDURE 1. INSTALL MASS AIR FLOW METER (a) Install the mass air flow meter to the air cleaner cap sub-assembly with the 2 screws. NOTICE:
If the mass air flow meter has been struck or dropped, replace it.
If reusing the mass air flow meter, be sure to inspect the O-ring...
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No special break-in is necessary, but a few precautions in the first 600
miles (1,000 km) may add to the performance, economy, and life of
the vehicle.
Do not race the engine.
Do not maintain one constant speed, either slow or fast, for a long
period of time.
Do not drive constantly at full-throttle or high engine rpm for
extended periods of time.
Avoid unnecessary hard stops.
Avoid full-throttle starts.
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