2002 Laredo 4.0 rebuilt but throwing code P0206 P0201 P0203
06-12-2017, 01:33 PM
#1
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Model: Cherokee
2002 Laredo 4.0 rebuilt but throwing code P0206 P0201 P0203
I have a open circuit on fuel injector cylinder 1,3, and 6 after rebuilt wrapping harness in New tubing and New electrical tape.. clipped all 6 injectors and re did the wires because they were showing and now the car is throwing those codes I need an easy way out if possible engine was recently fully rebuilt with New everything from the inside out even a 200 dollar valve job along with resurface and honing brand new pistons rings and fresh oil engine starts but runs rough because those codes I NEED HELP IN STUCK WHEN IT COMES TO ELECTRICAL MECHANICALLY IN INCLINED BUT ELECTRICAL IN A LOSER
06-13-2017, 04:37 AM
#2
Old fart with a wrench
Okay, the injectors are powered up with 12 volts all the time and are triggered to deliver fuel by being grounded thru drivers in the PCM. It sounds like the drivers aren't seeing a 12 volt signal from the injectors, probably because of bad wires, bent pins on the PCM harness plug, or some such other loss of continuity. If you can find out which harness plug and which pins are for the injectors, you can test them, but I can't seem to find that info in my FSM. I'll keep looking.
06-13-2017, 04:59 AM
#3
Old fart with a wrench
Okay, cable plug C2, which I think must be the middle one, injector #1 is pin 4, injector #2 is pin 15, #3 is pin 5, #4 is pin 16, #5 is pin 6, and #6 is pin 12.
06-13-2017, 06:22 AM
#4
CF Veteran
I don't know, Dave. Alfred doesn't seem very confident in his electrical abilities.
Alfred, don't say or think things like that about yourself. You've already taken the right first steps. Keep the faith - most of us started out just like you. You will learn and understand in due time. The first thing to do is to just do something. You'll know when enlightenment comes and it will be...hmm, what's a good word for it...oh yeah, enlightening!
Alfred, don't say or think things like that about yourself. You've already taken the right first steps. Keep the faith - most of us started out just like you. You will learn and understand in due time. The first thing to do is to just do something. You'll know when enlightenment comes and it will be...hmm, what's a good word for it...oh yeah, enlightening!
06-13-2017, 06:43 PM
#5
Old fart with a wrench
Yes, I know. I was trying to think of how to make it simple, but there isn't any way. There is a thing called a "noid" light that fits on an injector and will show if it's cycling of not, but the PCM is telling him it can't find 3 already so that's not much help.
