Ford 2003 Mustang Workshop Manual page 2195

The camshaft position sensor:
sends the powertrain control module a signal indicating camshaft position, used for fuel
synchronization.
The crankshaft position sensor:
sends the powertrain control module a signal indicating crankshaft position.
is essential for calculating spark timing.
The mass air flow sensor:
sends the powertrain control module a signal indicating mass air flow rate of air entering the
engine.
The intake air temperature sensor:
sends the powertrain control module a signal indicating the temperature of the air entering the
engine.
The heated oxygen sensor:
has the ability to create a voltage signal depending on exhaust oxygen content.
provides feedback information to the powertrain control module used to calculate fuel delivery.
The rear catalyst monitor sensor:
monitors oxygen content after the oxygen flows through the catalytic converter.
provides a voltage to the powertrain control module used to calculate catalytic converter
integrity.
The wheel speed sensor:
sends a signal to the powertrain control module indicating wheel speed.