Mass Air Flow (MAF) Sensor

DESCRIPTION:
The Mass Air Flow (MAF) sensor directly measures the mass of the air flowing into the engine. The sensor output is a DC (analog) signal ranging from about 0.5 volts to 5.0 volts used by the processor to calculate the injector pulse width for stoichiometry. For transmission strategies, this sensor is used for EPC pressure control, shift, and torque converter clutch scheduling.

SYMPTOMS:
Incorrect shift schedule, high/low EPC pressure.
Incorrect torque converter engagement scheduling and symptoms similar to a Throttle Position (TP) sensor malfunction. Soft or firm shift based on EPC/line pressure. Soft shifts may be caused by a restricted air inlet.

DIAGNOSTIC TROUBLE CODES:
P0102, P0103, P1100, P1101.