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Home >> Toyota >> 1998 >> Sienna LE >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Tests W/O Codes >> INTERMITTENTS >> Heating Method >> Component Testing
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Component Testing

Heat the suspected component with a hair dryer while checking for a malfunction to exist. DO NOT apply heat directly to the components in the Engine Control Module (ECM). DO NOT heat any component to more than 140°F (60°C).