The ICM is mounted on the top part of the 4.6L rear camshaft cover and is responsible for the following functions In addition to monitoring ON-OFF pulses from the crankshaft and camshaft position sensors, is responsible for generating a camshaft reference signal for controlling the ignition and fuel injection as well as providing the PCM with a ground reference and allowing the PCM to vary the amount of spark advance. The ICM is nonrepairable, and when replacing the module, the remaining components are transferred to the new one. To perform the removal of the ICM, spark plug wires and four electrical connectors must be disconnected, four bolts illustrated in the steps that hold the module to the rear camshaft cover must be unbolted, module assembly has to be taken out of the vehicle and
Ignition Coils removed from the assembly. Last of all, unscrew the ICM from the assembly bracket. The steps for installation are the reverse of the steps for removal.