Electronic Concentrated Control System (ECCS)

The self-diagnostic system is used for diagnosing malfunctions of Electronic Concentrated Control System (ECCS) sensors and actuators. The Electronic Control Unit (ECU) has a number of available diagnostic modes within the computer.

There are 2 modes with subdivisions on 300ZX. Before selecting any mode of self-diagnosis, always perform BASIC TESTING procedure in the ENGINE PERFORMANCE section first. This will eliminate wasted diagnostic time and invalid diagnostic results.