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hey i just have a noob question for anyone out there that knows microtech. there are 3 lights on the side of the ecu, a green, orange and red. my green and orange stay lit and the red one comes on and off for different periods of time. can anyone tell me what these lights mean?

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green is ecu power, orange is injector power and the redlight indicates a fault so if it flashes i suggest you get it checked out just to be safe. if you have a hand controller or the laptop software you can watch it when it flashes it will bring up the fault on the screen,

mine kept the red light after i went for a second tune cause they didnt bother to clear the codes after re-tuning it, but that was cause it was coming back for cold start a couple of days later

as per Microtech manual:

Green = Power ON (all models exept mt4/Lt4)

Yellow = Ignition Pulse indecator (when engine is running)

= TPS Calibration check (when ignition is on, engine is not running)

Note: THe TPS calibration lamp is disabled in LT series (laptop) ECU's when the handset is plugged in.

Red= Power ON (MT4/LT4 only)

= (flashing) Master Warning Light - refer to ERROR LOG SCREENS (screen 33)

Edited by 55yko

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