Diagnostic Modes: Notes

The self-diagnostic system can detect ECCS malfunctions and store related trouble code. Intermittent codes are also stored. All codes are stored until cleared from memory. If an intermittent does not reoccur within 50 ignition key cycles, it will be cleared from memory.

Switching modes is not possible when the engine is running. During diagnosis, the self-diagnostic system will automatically return to Mode I from Mode II when the ignition switch is turned off.