CEL 4, CKP, Need ECU Technical Help, Circuit wise...

turbo_civic_si · Post by **turbo_civic_si** » Thu Feb 26, 2004 4:35 pm

i figured out my ecu is bad. something went out in the ecu (already did basic test, ecu is bad!). i get this code on my ecu, yet i'm still able to connect. i need to know where in the ecu to check (caps, resistors, transistors, etc) and what kind of voltages to check for. it is a pulse that it works with, so i'm considering using an oscilloscope, but i don't have a schematic to really work off of. anybody can help? i'm not sure which sensor it is in the distributor. i figured it is the middle one? the top one looks like tdc (one lobe) and the bottom one i would figure is the cam (4 lobes). i'm not sure which sensor it is and i can't find my bible...any help is appreciated.

turbo_civic_si · Post by **turbo_civic_si** » Mon Apr 05, 2004 7:25 pm

ttt...maybe somebody can help here. i would like to try to fix this ecu...it is a permanent cel 4 chipped or not.

DaX · Post by **DaX** » Tue Apr 06, 2004 6:10 am

Not 100% on this, but I think the CKP sensor is the one that reads the "teeth" on the shaft of the distributor.