QuestionQUESTION: Hey Roland as I was testing my connector for my cam sensor, I somehow tripped a code P0118 for the ECT sensor & now the car will not rotate even though I do hear the fuel pump operating. While doing the test on the connector it seems like I also was making the fuel pump come off & on because that's how I noticed a leak on one of my injectors. I have tried testing this connector before & it never did that. I don't know what I could have done to cause this. I didn't splice or remove any wiring. That didn't exist before today.
ANSWER: Those sensors share a common ground wire (black/light blue). Maybe the 8v orange wire on the cam sensor short circuited to the ground wire which would then cause the ect signal to appear way off value and set the code. All the sensors share that ground wire but possibly the ect would be the only circuit which is programmed to be 'tripped' by such an 8v short. It is a simple resistive circuit rather than a pulsing circuit. So look for a short between those two wires at the cam sensor or along the harness.
Roland
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QUESTION: Thank you for the quick reply. Would this keep my starter from kicking in?
ANSWER: Hi Marvn,
Check fuses N, G in the powerbox under the hood, and fuse 13 behind the dash which are all involved one way or the other in this history.
Roland
PS Please rate my answer. Thanks
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QUESTION: I don't know Roland, I am lost in this situation. I check all grounds & wiring I see nothing different. I check all fuses & switched around all relays. I have had this code pop up before but it did not make my motor incapable of turning over. I think I am going to look for a complete engine wire harness to replace my current one.
AnswerIt is not that complicated, so don't contemplate changing the harness!
Does the starter motor relay click when you try the starter?
Does the solenoid switch click loudly?
Is there 12v on pin A of the starter motor relay when you try to 'start'?
Is there 12v on pin B of the socket all the time?
If you jump from B to D of the socket does the starter motor respond?
Let me know and we;ll go from there?
Hi Marvin,
If you believe it is the starter relay that is clicking, then the question is why doesn't the starter motor solenoid close and connect the power from the fat red wire that comes from the battery to the armature of the motor? Pull the starter motor relay and jump from the rear pin to the one next to it (B to D) and that should cause the motor to turn IF you have power on B. If it does fire up, then the relay contacts are oxidized, if it doesn't fire up, then check to be sure 12V is getting to tne starter motor on the light green wire that goes from pin D to it when you do the jump. If you have 12v on the wire then the solenoid switch should click loudly and fire up the motor. If it has 12v and it doesn't click the solenoid then the solenoid is bad or the battery is very weak. You have to get the solenoid to click for the battery current to be applied the motor.
Roland
