Diagnostic Modes

Five different diagnostic modes are available through the ECCS. Diagnostic modes 1 and 2 are used for monitoring the air/fuel mixture ratio using LED inspection lights. Mode 3 is the self diagnostic system, used for obtaining trouble codes for component or circuit failures. Mode 4 is used to determine if malfunction(s) are present in the on/off controlled switches of the system. Mode 5 is the real time diagnostic system, used for monitoring the system and its components during actual driving conditions, usually to simulate an intermittent condition.