CCD Bus

CCD BUS
Various controllers and modules exchange information through a two-wire communication port called the CCD Bus.The PCM transmits various monitored input information and control requests to other modules on the CCD Bus. The PCM also receives information and requests that effects the control of its outputs from other controllers over the CCD Bus. The CCD Bus has a measurable voltage of approximately 2.5 volts.

Various modules exchange information through a communications port called the CCD Bus. The Powertrain Control Module (PCM) transmits the Malfunction Indicator Lamp (Check Engine) ON/OFF signal and engine speed (rpm) on the CCD Bus. The PCM receives the Air Conditioning select input, transaxle gear position input and speed control engage inputs over the CCD Bus. The PCM also receives the air conditioning evaporator temperature signal from the CCD Bus.

The following components access or send information on the CCD Bus.
- Instrument Panel
- Body Control Module
- Air Bag System Diagnostic Module
- Full ATC Display Head
- ABS Module
- Transmission Control Module
- Powertrain Control Module Travel Module (if equipped).