Amigo 4WD L4-2559cc 2.6L SOHC (4ZE1) (1993)
Mass Air Flow Sensor: Testing and Inspection
Mass Air Flow Sensor Terminals
Air Flow Sensor Inspection
Mass Air Flow Sensor Circuit Inspection
SENSOR CHECK
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Pull connector back.
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Using a DVOM measure as follows:
1. Between RED wire and ground.
Key ON: Battery voltage should exist.
Key OFF: Battery voltage should not exist.
Mass Air Flow Sensor Inspection
2. Between WHITE wire and ground.
Key ON. 0.5 - 2.0 volts should exist when blowing air through sensor passage "A".
Key OFF. 0 volts should exist when blowing air through sensor passage "A".
3. Between VIOLET wire and ground.
Key ON and OFF. Less than 0.2 volts. Continuity should exist.
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When 1 and 3 are abnormal, check wiring and correct or replace as necessary.
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When 1 and 3 are normal, but 2 is abnormal, replace sensor.
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When 1, 2 and 3 are normal, circuit and sensor are functioning properly.