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Home >> Toyota >> 2002 >> Corolla LE, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics >> Diagnostic Tests >> DTC P0100: Mass Airflow Meter Circuit >> Circuit Description

Circuit Description

MAF meter uses a platinum hot wire maintained at a constant temperature. Airflow past sensor affects temperature and current flow through MAF meter. DTC is set when ECM detects an open or short in MAF meter circuit for more than 3 seconds with engine speed at 3000 RPM or less. ECM will operate in fail-safe mode if DTC P0100 is set. Possible causes are:

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