PCMTuner 3 New Spare Transistors What is for?

By | June 12, 2022

What is this for? I see there is a box in the pcmtuner package.

Pcmtuner 3 Resistors

It is MMBT2222A.

Spare transistors used for GPT circuits, lots of people damage these by connecting wrongly to ECU so these are replacements if it happens.
they cost $0.22. you can find even on ebay.

Check: Module 71 bench mode not working solution