Self-Diagnostic System

Instrument Panel Cluster (IPC) is equipped with a self-diagnostic system which detects system Diagnostic Trouble Codes (DTCs) or abnormalities. When certain malfunctions occur, IPC will store DTC B1367. See DTC 1367: INSTRUMENT PANEL CLUSTER (IPC) IGNITION "0" CIRCUIT LOW  under DIAGNOSTIC TESTS. Malfunctions are recorded as history/intermittent failures or as current failures. Current DTCs indicate IPC has detected a fault which currently exists (some codes will remain current until next ignition cycle even if fault no longer exists). A history DTC indicates that IPC previously detected a malfunction that does not currently exist.

A scan tool can be used to retrieve and clear DTCs. Scan tool also has several features that can be used to help locate intermittent conditions. Scan tool will display input status and data values used. Scan tool can also cycle several gauges and warning indicators on and off. This feature can determine if IPC is able to cycle a gauge or indicator, regardless of inputs or any specific program instructions. When these tests are selected, scan tool displays only information on what action IPC is commanding (verify if operation was actually performed).