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Home >> Nissan-Datsun >> 1991 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Airflow Meter
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Airflow Meter

Ensure there is no dust or foreign material in hot wire air passage. Faults in the airflow meter circuit should set a trouble code. If Code 12 is set, go to CODE 12 diagnostic procedures in TESTS W/CODES article. Also see AIRFLOW METER VOLTAGE TEST table.

AIRFLOW METER VOLTAGE TEST (1)

Application ECU Terminal (2) Voltage
NX 15 .5-4.0
Sentra 15 .5-4.0
(1) Measure voltage between ground and indicated ECU terminal. Voltage should increase with an increase in airflow (RPM). DO NOT run engine at high RPM under no load.
(2) To identify ECU terminals, see appropriate WIRING DIAGRAMS article.
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