MSefi.com read only forum (Jan.15,2018)

I have a MS2 V3.0 and I just found out Q1 and Q5 input pins are showing a nice flashing with led tester... however the output pins are showing a constant lit up led.......

where should I start looking and what should I check first? I have a DMM

I'd first suspect Q1 and Q5 themselves are shorted. Try desoldering them and see if the injector LEDs go out - if they do, get new Q1 and Q5's; if they don't, look for a short.

the weird thing is neither of the injector leds on the stim is lighting up.... I'll double check if the injector leds are working correctly on the stim.

Ok, I misheard you. The output pins should go to ground (turn off the LED if you are checking for voltage there) when the injectors are firing.

how do you mean that. I don't quite follow what you mean. I read the injector led should blink on the stim s well as the output pin @ Q1 and Q5 or am I mistaken?

If I turn down the rpm's and result the injection pulse to be 0 and check if I still have 12 volt showing on the output pins then I would have to suspect a short to 12 volt OR a problem in flyback components should I not?

I have found it. forgot to jumper R37 and R38