Cutlass Ciera Cruiser V6-3100 3.1L MFI VIN M (1994)
Air Flow Meter/Sensor: Description and Operation
PURPOSE
The Mass Air Flow (MAF) sensor measures the amount of air which passes through it. The Powertrain Control Module (PCM) uses this
information to determine the operating condition of the engine, to control fuel delivery. A large quantity of air indicates acceleration, while a small
quantity indicates deceleration or idle.
OPERATION
The Tech 1 reads the MAF value and displays it in grams per second. It should read between 4-7 on a fully warmed up idling engine. Values
should change rather quickly on acceleration, but values should remain fairly stable at any given RPM. A failure in the MAF sensor or circuit
should set DTC PO101. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Tests and
Associated Procedures/P Code Charts/P0101
