How to Reset the ECU for the 300ZX
- 1). Put the key in the ignition and turn it to the "On" position, but don't start the engine.
- 2). Press down on the accelerator very fast five times within five seconds. You have to press the pedal all the way to the floor each time. Wait 10 seconds.
- 3). Press the accelerator to the floor and hold it for 10 seconds, or until the "Check Engine" light turns on and off. Repeat this step again.
- 4). Turn off the ignition and wait about three minutes. Start the engine and examine the instrument panel. The Check Engine light should now be off and the ECU reset.