A Charts

Chart A:

BCM Circuit:

CIRCUIT DESCRIPTION:
You have been directed to this chart from the "DIAGNOSTIC SYSTEM CHECK" as a result of the Driver Information Center being blank (not lit) and the Instrument Panel Cluster is either blank (digital cluster) or all gages are at a minimum value (analog cluster). This is a result of either a loss of the wake-up circuit between the IPC, CCDIC, and BCM or a loss of IGN 3 to the BCM.

NOTES ON FAULT TREE:
1. This step checks for ignition-3 input to the BCM. If IGN 3 is not at system voltage the BCM will not turn on the displays.
2. This checks the wake-up CKT 807. If this circuit is grounded or open at the BCM pin, all displays will be blank.
3. If voltage greater than 10 volts is present at BCM pin "1D10" there is either an open between the BCM and connector "C200" or a short to ground on CKT 807 between the BCM, IPC, and CCDIC.