INJECTOR NOT FIRING
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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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orford2004
- MegaSquirt Newbie
- Posts: 33
- Joined: Sun Jul 03, 2011 10:47 am
INJECTOR NOT FIRING
I have megasquirt II V3.0 and the injectors don't light on the stim but the led light on megasquirt. If i check the pin#21 on the CPU, it flash but i got nothing on he pin#22. What could be wrong???
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: INJECTOR NOT FIRING
First thing to do is check for settings problems. Can you post your MSQ?
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orford2004
- MegaSquirt Newbie
- Posts: 33
- Joined: Sun Jul 03, 2011 10:47 am
Re: INJECTOR NOT FIRING
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: INJECTOR NOT FIRING
That should have the same behavior on both channels. Have you tried injector test mode?
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orford2004
- MegaSquirt Newbie
- Posts: 33
- Joined: Sun Jul 03, 2011 10:47 am
Re: INJECTOR NOT FIRING
Yes Matt i just did but same thing. Flash on pin#21 but nothing on pin #22
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orford2004
- MegaSquirt Newbie
- Posts: 33
- Joined: Sun Jul 03, 2011 10:47 am
Re: INJECTOR NOT FIRING
and it flash on pin#39 and 40
Re: INJECTOR NOT FIRING
What do you get on the outputs of U4 (pin 5 & 7) ? If nothing, check there is 12 volts between pins 3 & 6.orford2004 wrote:and it flash on pin#39 and 40
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
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orford2004
- MegaSquirt Newbie
- Posts: 33
- Joined: Sun Jul 03, 2011 10:47 am
Re: INJECTOR NOT FIRING
12V on pin 3 and 6 pin 3 is the neg.
pin #5 0.85V
pin #7 0.28V
pin #5 0.85V
pin #7 0.28V
Re: INJECTOR NOT FIRING
Have you looked at the V3 troubleshooting section in the manual? If pulses are present at the inputs to U4, but not the outputs and it has power, first double check it is the right way round. Also check D17 and D18 and Q14 and Q15 are also installed correctly - something wrong there might short the outputs from U4.
Is this a ready made or DIY assembled unit?
Is this a ready made or DIY assembled unit?
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
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orford2004
- MegaSquirt Newbie
- Posts: 33
- Joined: Sun Jul 03, 2011 10:47 am
Re: INJECTOR NOT FIRING
What i don't understand is that the signal come from the CPU. It flash on pin #21 but not on pin #22. U4 flash on pin #2 but not on pin #4. What can happen for the pin #22 to not sending a signal????