yes i know i have read the whole cel page but i am in need of direct help, i have a lsv motor that is obd2, with a obd2 harness with a obd2 to obd1 jumper with a chiped p28, i have a check engine light that i dont know how to read because a scan tool doesnt work and i cant find the little jumper to make the cel blink help! this is on a 96 ek hatch sorry for the grammer typed from my phone need help big time

 

ok um the only thing i can tell you is to get ahold of the place you got the OBDII to OBDI converter from and ask them what wire you ground out to get the codes.

i had to remove a ECM harness from a 94 Teg for a Del Sol once and i can tell you that there are 3 wire that don't go to the engine bay connectors

Wire 1 gets 12V+ to power the ECM

Wire 2 Sends 12V+ to the dash for the CEL

and Wire 3 When connected to ground Makes the CEL blink codes and lets you set timming.

so you had to have some way to set timming and if you know what to do to set timming then that wire is the one you short to get the CEL codes

 

Read the Diagnostic Trouble Codes Without an OBD2 Code Reader
#1
Locate the 16-pin data link connector. Connect the jump wire to terminals 4 and 9 of the connector. Turn the key to the "On" position without starting the engine.

#2
Watch the "Check Engine" light. This light will begin to flash in specific patterns to indicate a 1- or 2-digit Diagnostic Trouble Code. The flashes will be long for the first digit, short for the second digit and blank if the digit is 0.

#3
Record all the codes given. The "Check Engine" light will display the codes in sequence and then keep repeating them in order. Refer to your repair manual to check for the meaning of the codes.

 

thank you very much solster and honda parts hero. to solster been great help and honda parts hear the same the way i set my timeing was with a snap on gun that onected to the batterie then to the number four spark wire that it. and the digram help very much im going to try it tomorrow after class want to ****ing figuer out what the hell is going on :D

 

oki have tried the jumper plug and nothing at all the check engine light just stayed on didnt blink or anything

 

Does the engine start and run?

 

ok sorry i have found the blue plug and found out it was the iat sensor everything has been replace mods can close thank you very much for the help can close this thread