Airflow Meter: Notes

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 the AIRFLOW METER VOLTAGE TEST table.

AIRFLOW METER VOLTAGE TEST ⁽¹⁾

Application

ECU Terminal ⁽²⁾

Voltage

Pathfinder & Pickup

1.0-3.0

⁽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.