Self-Diagnostic System: Notes

NOTE: Vehicles with analog instrument panel cluster are equipped with a Climate Control Panel (CCP). Vehicles with digital instrument panel cluster are equipped with a Climate Control Center (CCC). References to CCP also include CCC.

Body Control Module (BCM) is equipped with a self-diagnostic system, which detects system failures or abnormalities. When a malfunction occurs, BCM will store a 6 digit alphanumeric code beginning with "PZ". Malfunctions are recorded as history/intermittent failures or as current failures. Codes are displayed in sequential order beginning with lowest number code. If no codes are present for a system, a "NO X CODE" message (with X being system, i.e., "PZ", "IP", etc.) will be displayed. If communication line to a component is not operating, a "NO X DATA" message will be displayed, indicating IPC could not communicate with that system.

After BCM trouble codes have been displayed, service mode can be used to clear codes and exit diagnostics or individually perform other tests on different systems. To continue with system diagnostics, see SERVICE MODE OPERATION. To exit diagnostic mode, press DEFOG or AUTO/ECON button on CCP, or turn ignition off. Codes will not be cleared. System will return to normal vehicle operation.