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
output on Q1 and Q5
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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Matt Cramer
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Re: output on Q1 and Q5
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.
Re: output on Q1 and Q5
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.
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: output on Q1 and Q5
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.
Re: output on Q1 and Q5
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?
Re: output on Q1 and Q5
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?
Re: output on Q1 and Q5
I have found it. forgot to jumper R37 and R38 