Mustang Cobra V8-4.6L DOHC VIN V (2000)
Compressor Clutch Relay: Description and Operation
Constant Control Relay Module
The constant control relay module (CCRM) interfaces with the Electronic EC system to provide vehicle power (VPWR) to the powertrain control
module (PCM) and the Electronic EC system and for the control of the cooling fan and A/C clutch. The CCRM also contains the fuel pump driver
module (FPDM) power supply relay, which supplies power to the FPDM. If any of the internal components of the CCRM fail, the entire unit must be
replaced. The descriptions of the specific CCRM functions, as well as the Dual Function A/C high pressure switch are found under the individual
hardware - PCM inputs and outputs. See: Powertrain Management/Computers and Control Systems/Description and Operation
