Entering IPC System Self-Diagnostics

WARNING: This page is about a different car, the 1990 Cadillac Seville and 1990 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.

The Instrument Panel Cluster (IPC) does not produce trouble codes in relation to system malfunctions. The IPC does, however, have self-diagnostic capabilities. To access the self-diagnostic capabilities of the IPC system, complete the following:

Enter self-diagnostics. See ENTERING SELF-DIAGNOSTICS under SELF-DIAGNOSTIC SYSTEM in this article.
Display trouble codes stored in memory. See DISPLAYING TROUBLE CODES under SELF-DIAGNOSTIC SYSTEM in this article.
NOTE: Although there are no IPC system trouble codes, all trouble codes in memory must be displayed as part of the procedure for entering the IPC self-diagnostic system.
Select IPC system for testing. See STEP 1: SYSTEM SELECTION under MANUAL OPERATION OF SELF-DIAGNOSTICS in this article.
Select INPUT test. See STEP 2: TEST TYPE SELECTION under MANUAL OPERATION OF SELF-DIAGNOSTICS in this article.
NOTE: INPUT tests are the only applicable IPC system tests. DO NOT select any other available test types.
Select the specific test type. For selection procedures, see STEP 3: SPECIFIC TEST SELECTION under MANUAL OPERATION OF SELF-DIAGNOSTICS in this article. Then, return to this section and see IPC SPECIFIC INPUT (II) CODES for list of available IPC specific input tests.