Standard Body Module Serial Data CKT

The PCM uses the Class 2 serial data circuit to communicate with the vehicle Body Control Module (BCM) and other devices. The PCM ensures that communication remains established by monitoring the serial data circuit for state of health messages from the the other devices using the circuit.. If the PCM detects a loss of the state of health serial data message from the BCM, DTC P1610 will set.

For information concerning the various devices that use the Class 2 serial data circuit, refer to Serial Data in Electrical Diagnosis.