Mass Air Flow (MAF) Sensor

DESCRIPTION
The mass air flow sensor (MAF) directly measures the mass of air flowing into the engine. The sensor output is a DC (analog) signal ranging from 0.5 to 5 volts used by the powertrain control module (PCM) to calculate fuel injector pulse width. For transmission strategies this mass air flow sensor is used for electronic pressure control (EPC) control, shift and torque converter clutch scheduling. The powertrain control module uses this signal for EPC pressure control, shift and torque converter clutch scheduling.

SYMPTOMS
Incorrect shift schedule, EPC pressure high or low, incorrect TCC engagement scheduling and symptoms similar to a throttle position (TP) sensor malfunction. Malfunction indicator lamp (MIL) on.

DTC's
P0102, P0103, P1100, P1101