Diagnostic System

The ECM of the ECC system is equipped with a self-diagnostic system which detects system failures or abnormalities. When a malfunction occurs, ECM will light the "ECS" lamp located on the instrument panel. When a malfunction is detected and lamp is turned on, a corresponding trouble code is stored in ECM memory.

As a bulb and system check, the "ECS" lamp will glow when ignition switch is turned on and engine is not running. When engine is started, the lamp should go out. If not, a malfunction has been detected in ECC system.