Weird CEL issue?
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Weird CEL issue?
I have an '00 y7 which I converted over to OBDI so that I could use hondata. I am using a p06 ECU. I am currently throwing a CEL but when I try and jump the connector, the CEL will not blink displaying the code. I also had access to a PGM tester that the honda dealerships use and when that was plugged in, it displayed, 'unable to communicate' with the ECU. I was wondering if anyone had any ideas of what could be wrong. Could it be the conversion harness I got for OBDII-ODBI has a wire backwards? Any other ideas are greatly appreciated.
Pfieff
Pfieff
#2
Re: Weird CEL issue? (Pfieffdog)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pfieffdog »</TD></TR><TR><TD CLASS="quote">Could it be the conversion harness I got for OBDII-ODBI has a wire backwards? Any other ideas are greatly appreciated.
</TD></TR></TABLE>
All depends on who you got your harness from, the OBD-2 PGM tester will not work on a car that's using an OBD-1 ECU, so you'd need to put the OBD-2 ECU back in for that. Otherwise, you can check the CEL by jumping the pins on the jumper if the plug underneath your glove box doesn't work.
OBD-1 side
D4 to an ECU ground (like D21 or D22)
OBD-2B side
A10 to an ECU ground (like C7 or C18)
D4/A10 pins is your service check signal.
</TD></TR></TABLE>
All depends on who you got your harness from, the OBD-2 PGM tester will not work on a car that's using an OBD-1 ECU, so you'd need to put the OBD-2 ECU back in for that. Otherwise, you can check the CEL by jumping the pins on the jumper if the plug underneath your glove box doesn't work.
OBD-1 side
D4 to an ECU ground (like D21 or D22)
OBD-2B side
A10 to an ECU ground (like C7 or C18)
D4/A10 pins is your service check signal.
#3
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Re: Weird CEL issue? (Pfieffdog)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pfieffdog »</TD></TR><TR><TD CLASS="quote">I also had access to a PGM tester that the honda dealerships use and when that was plugged in, it displayed, 'unable to communicate' with the ECU. </TD></TR></TABLE>
A scantool won't work with hondatas chip. My p28 wont flash codes either, not sure if it's supposed to with hondata. I just use my laptop to check for sensors out of range.
A scantool won't work with hondatas chip. My p28 wont flash codes either, not sure if it's supposed to with hondata. I just use my laptop to check for sensors out of range.
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Re: Weird CEL issue? (Chiovnidca)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chiovnidca »</TD></TR><TR><TD CLASS="quote">
A scantool won't work with hondatas chip. My p28 wont flash codes either, not sure if it's supposed to with hondata.</TD></TR></TABLE>
I wonder why that is. My hondata tuner told me that my IAC valve was what was throwing the CEL so I replaced that with a different one and the idle is still screwy and the CEL is still displayed. I don't get it.
A scantool won't work with hondatas chip. My p28 wont flash codes either, not sure if it's supposed to with hondata.</TD></TR></TABLE>
I wonder why that is. My hondata tuner told me that my IAC valve was what was throwing the CEL so I replaced that with a different one and the idle is still screwy and the CEL is still displayed. I don't get it.
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Re: Weird CEL issue? (Pfieffdog)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pfieffdog »</TD></TR><TR><TD CLASS="quote">
I wonder why that is. My hondata tuner told me that my IAC valve was what was throwing the CEL so I replaced that with a different one and the idle is still screwy and the CEL is still displayed. I don't get it.</TD></TR></TABLE>
The exact thing happened with my TPS sensor. I replaced it and it still throws the code even after I reset the ECU.
I wonder why that is. My hondata tuner told me that my IAC valve was what was throwing the CEL so I replaced that with a different one and the idle is still screwy and the CEL is still displayed. I don't get it.</TD></TR></TABLE>
The exact thing happened with my TPS sensor. I replaced it and it still throws the code even after I reset the ECU.
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Re: Weird CEL issue? (GTlvr82)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GTlvr82 »</TD></TR><TR><TD CLASS="quote">
The exact thing happened with my TPS sensor. I replaced it and it still throws the code even after I reset the ECU.</TD></TR></TABLE>
Are you running hondata?
The exact thing happened with my TPS sensor. I replaced it and it still throws the code even after I reset the ECU.</TD></TR></TABLE>
Are you running hondata?
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Re: Weird CEL issue? (Pfieffdog)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pfieffdog »</TD></TR><TR><TD CLASS="quote">I also had access to a PGM tester that the honda dealerships use and when that was plugged in, it displayed, 'unable to communicate' with the ECU. Pfieff</TD></TR></TABLE>
FYI, the obd2 scaner will not work when you use a obd1 ecu.
FYI, the obd2 scaner will not work when you use a obd1 ecu.
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