Powertrain Control Module (PCM)

The PCM is the only module on the SCP communication network. If one of the bus wires becomes shorted to ground or voltage, or if some but not all termination resistors are lost, communications can continue. Check circuits P/LB and T/O between the PCM B111 and the DLC B209. Total resistance values must not be more than 5 ohms. If the resistance is more than 5 ohms there is an open circuit in the SCP network, damage to the DLC B209, damage to the PCM B111, or a problem in the in-line connector.