Ford 2003 Mustang Workshop Manual page 2197

SECTION 303-14: Electronic Engine Controls
DESCRIPTION AND OPERATION
Electronic Engine Controls —Cobra
Most of the Cobra engine electronic controls are similar to that of the non-supercharged 4.6L (2V)
engine. These components are as follows:
Crankshaft position (CKP) sensor
Throttle position (TP) sensor
Idle air control (IAC) valve
Mass air flow (MAF) sensor
Heated oxygen sensors (HO2S)
Engine coolant temperature (ECT) sensor
There are also three controls that are unique to the Cobra engine. These are as follows:
Integrated temperature and manifold absolute pressure (T-MAP) sensor
Supercharger bypass vacuum solenoid
Supercharger bypass vacuum solenoid — actuator
Supercharger Bypass Vacuum Solenoid and Actuator
The Supercharger bypass vacuum solenoid will bleed off boost under the following conditions:
heavy engine misfire
engine coolant over-temperature
loss of intercooler fluid
pump failure
This prevents damage that can occur if boost were allowed under these conditions. The solenoid is
located on the upper LH side of the engine. The solenoid uses engine vacuum to operate a actuator
and linkage that connects to the pressure bleed off valve. The actuator is located near the solenoid
and is connected to it by a vacuum line.
Integrated Temperature and Manifold Absolute Pressure (TMAP) Sensor
The TMAP sensor is located on the upper LH side of the engine and is used to measure current
manifold absolute pressure and manifold air charge temperature.
2003 Mustang Workshop Manual