Diagnostic Starting Point - Engine Controls
WARNING: This page is about a different car, the 2003 Pontiac Grand Am, 2003 Oldsmobile Alero, 2003 Chevrolet Monte Carlo, and 2003 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Begin the system diagnosis with Diagnostic System Check - Engine Controls. See DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS . The Diagnostic System Check - Engine Controls will provide the following information:
- The identification of control modules which command the system.
- The ability of control modules to communicate through serial data circuit.
- The identification of any stored Diagnostic Trouble Codes (DTCs) and the codes' status.