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S300 cel light, error code
Posted: Wed Oct 31, 2007 5:20 am
by srcracing
98 Prelude H22 supercharged, Hondata OBDII computer with internal OBD I to II plug, S300, socketed by Hondata. DTC error #9. I've checked triggers and wiring at ECU connecter with osciliscope and have a good wave forum. Any ideas why I still have CEL and error code?
Posted: Mon Nov 05, 2007 11:46 am
by Spunkster
Some Preludes have a wiring change that is not documented anywhere. You will have to check the distributor wiring using a multimeter to make sure they are going to the right places on the ecu. No one has ever let us know what the exact resolution to the problem was.
wave forms
Posted: Tue Nov 06, 2007 3:51 pm
by srcracing
What wave forms should I see, for these triggers? TDC, (I would think 1 ref per tdc event) CKP (24 evemts per 720 degrees), CYP (1 event just before #1 TDC) Is this correct?