Discussions concerning the M7790 cpu
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gsxryan
Posts: 30 Joined: Sat Jun 20, 2009 1:58 am
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by gsxryan » Mon Aug 10, 2009 4:06 am
I can't figure out what is throwing this ECU code within nistune. Any ideas? I didn't think these had EGT sensors stock. I also have EGR feedback turned off in the feedback panel.
Ignore the nasty map in the background, was just using it as testing.
skylinegtrhr
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by skylinegtrhr » Mon Aug 10, 2009 4:36 am
Hi what Year is Yours P10 G20 ?
Check attachment as in manual EGT is listed for California model. 1990-1992
and for all later models ( I have manuals for 1994 and 1996 model).
Attachments
Pages from ELECTRICAL_COMPONENT_LOCATO.pdf
(112.27 KiB) Downloaded 185 times
Pages from ec.pdf
diagnostic procedure for EGT sensor (118.56 KiB) Downloaded 152 times
gsxryan
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by gsxryan » Mon Aug 10, 2009 4:12 pm
It's a 96 P10
If it's the EGR temp sensor (which is not plugged in) shouldn't nistune prevent it from throwing the code? I have EGR feedback disabled in the feedback panel.
Matt
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by Matt » Mon Aug 10, 2009 6:04 pm
it will not prevent the DTC code from being raised. I've started adding the DTC filter flags to some vehicles but P10 isnt on that list yet
Once the filter flag is off it stops the DTC from being raised
gsxryan
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by gsxryan » Tue Aug 11, 2009 5:01 am
Could the P10 be added to that list? Is there a current workaround? If I just plug the sensor in will it 'fool' it for the time being?
Matt
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by Matt » Tue Aug 11, 2009 9:51 am
I've added to the list to update the address file
If you plug in the sensor it will remove the DTC code
Matt
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by Matt » Sat Aug 15, 2009 10:11 pm
I've looked at this code tonight. It does not have the DTC filter flags like other ECUs I've looked into
So unfortunately I cannot add filters to the address file for this ECU
gsxryan
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by gsxryan » Mon Aug 24, 2009 12:25 am
So will it cause ill effects if I have EGR temp sensor off checked in the feedback box?
Matt
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by Matt » Mon Aug 24, 2009 3:25 pm
Unless the ECU has some limp home implementation for EGR missing, but I would think most likely not
So even through you have the DTC raised, there most likely wouldnt be any changes to the way the ECU functions otherwise