QuestionQUESTION: I'm getting a P0113 code on my 2005 Chrysler Pacifica 3.5L
I believe this relates to the IAT sensor so I thought I'd try to replace it (if I can find it!). Perhaps you can guide me to where it's located and provide any hints for troubleshooting and replacing.
Thanks,
Ken
ANSWER: Hi Ken,
The sensor is mounted on the side of the flexible air intake hose that goes between the air filter housing and the throttle body, near the throttle body on the right side of the engine. It has dark blue/dark green and brown/white wires. Unlock and remove the electrical connector then remove it from the hose and replace it. You might want to trace the wire harness from the sensor to where it joins the rest of the harness to check for any insulation melting/shorting together of the wires.
Roland
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QUESTION: Thanks Roland, I was able to locate and replace the IAT sensor. Unfortunately, It didn't clear the P0113. Now that the weather has warmed up, I also noticed that the cooling fan isn't kicking in. Could there be a relation between the two problems.
ANSWER: Hi Ken,
Have you tried disconnecting the battery for a few moments and then after hooking it back up to verify that the code is gone, driving for a few trips to see if the code returns? You may not have erased the original code. If it persists, then you will need to trouble shoot the wiring to the sensor with a volt-ohm meter to find the cause of the code. Let me know and I can tell you the details of that process
I doubt there is a relationship with the radiator fan issue. Check fuse 13 in the box under the hood, and if that is OK again we will need to do some troubleshooting. Is the temp gauge rising toward 3/4 scale and the fans still not starting? If you ask for AC are the fans not coming into play?
Roland
PS Please 'rate' my answer, and where you see the question about a nomination for 'volunteer of the month' consider giving a 'yes' answer. Thank you
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QUESTION: Thanks Roland. I have tried clearing the code with my DTC reader without success. Perhaps you can tell me how to check the wiring. Also disconnected the battery to force a reset on everything.
I noticed that I'm getting a P0480 code which I think points to the rad fan control relay. Is that an easy thing to change?
AnswerHi Ken,
Are you checking for codes immediately after clearing them or are you driving it again and then checking? If the latter then the code may be being reset because it hasn't been solved, if the former, and the codes are still there, then for some reason the reader isn't cancelling them. If the former is the case then disconnect the battery briefly which usually should erase the codes.
On the 0480, that could be the fan circuitry but it also could be fuse 13 is blown or the fan relay is acting up. Although it is called "fan no. 1" problem, it appears that both fans are connected in tandem to the relay, so I would expect that both the fans would not be working when this code was set. What have you noticed?
The relay is accessible behind the grille, sitting on top of the bumper re-inforcement if you remove the panel just above amd in front of the radiator called the closure panel (4 push pins, 2 screws at the far ends, and multiple screws that attach it to the top of the grille. If you can get to it without removing the bumper fascia that would be the easiest but you may have to also remove the bumper fascia. Unless there is an issue with the control wires to the relay or from the relay to the fans it has to be the fuse or the relay causing that code.
Roland
PS Thanks for the prior ratings and nominations. You are allowed to do it again with each new answer so if this merits it, please do. Thank you
Roland, I was unable to clear the codes with my reader or disconnecting the battery. I have verified fuse 13 is OK.
What is the procedure for checking the IAT sensor cct. with a VOM
Hi Ken,
The brown/white on pin 2 goes to pin 30 of the C2 plug (black/orange) at the pcm, that is the signal wire. And the dark blue/dark green on pin 1 goes to pin 27 of the same plug, that is the ground lead that it shares with the same wire from the cam position sensor. The sensor is a simple temperature dependent resistor. So check the continuity of the two wires, and also check that the signal wire is not shorted to ground or shorted some stray voltage. The resistor is probably supposed to be 7-13k at ambient, and drop to maybe 1-2K when the intake air is fully warmed.
Sorry for the delay but I only found your question when I checked for 'feedback' from readers.
Roland
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