Chart D-1: Data Circuit Open

You have been directed to this chart from CHART D: DATA CIRCUIT PROBLEM because there is an open in circuit 800 isolating the Combo Panel from the BCM. This chart will help you determine were the open circuit is located.

NOTE: The following step numbers refer to circled numbers on diagnostic chart. See Fig 1 . For circuit identification, see Figure .

The IPC is able to communicate with the BCM, so CKT 800 between the BCM and IPC is not the cause of the fault.
The IPC is not able to communicate with the BCM, therefore the fault lies between the IPC and BCM.

Fig 1: Chart D-1: Data Circuit Open Flow Chart

Courtesy of GENERAL MOTORS CORP.