P0112
#1
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Model: Cherokee
P0112
Hey guys just wanted to ask, my xj threw a p0112 IAT code this morning, tested the harness, ignition on engine off and have no voltage bummer! Is there a common place where the harness breaks/shorts? Haven’t had time to dig into just yet but thought I’d ask! Thanks!
#2
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I could be wrong but I didnt thing the temp sensor worked on positive voltage. One wire was a ground and the other was the signal which was based off OHMs to ground depending on temp.
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Every source I can find says it supposed to have 5v with the ignition on, I could be wrong too haha I’ve worked on nissans for 13 years, been driving jeeps for the last 8 but they don’t break as much as nissans so I haven’t schooled my self that much on them haha.
#4
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And I am from the GM world... I know thats how they do their IAT but it is a Jeep so could be different. And BTW - I have owned 3 different Nissans since 07 (still one currently). I know exactly what you mean about them breaking! Just glad they come with a warranty.
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Haha they are good cars tho they started to get it together around 07 they just had a bad run in the early 2000s. But found the issue!!! Harness was laying on the back of the fuel rail and rubbed threw and grounded the circuit! Thought it was strange it happened today because I just replace the valve cover gasket and nudged the harness around looks like it been that way for awhile tho.
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Year: 97
Model: Cherokee
Engine: 4.0
Haha they are good cars tho they started to get it together around 07 they just had a bad run in the early 2000s. But found the issue!!! Harness was laying on the back of the fuel rail and rubbed threw and grounded the circuit! Thought it was strange it happened today because I just replace the valve cover gasket and nudged the harness around looks like it been that way for awhile tho.
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#8
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Year: 97
Model: Cherokee
Engine: 4.0
Used to be the big guys won... Not any longer, The little guys can get to places and not require moving as much stuff out of the way to get the job done.
The new computerized rigs are a lot more complicated than the general public thinks. I can reset parameters on a truck computer while it is driving down the road under load by satellite remote. Pretty cool stuff...
The new computerized rigs are a lot more complicated than the general public thinks. I can reset parameters on a truck computer while it is driving down the road under load by satellite remote. Pretty cool stuff...
#10
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Year: 97
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And we could do it by remote satellite through their Qualcomm system. We could monitor refrigeration units too... all three temp sensors.
"Hey! I'm calling you because your chute is down".
"How do know?"
"Because I am reading your temps and you are about to lose a half million dollar load of Strawberries, stop and check it!"
"Well I'll be darned..." lol
Last edited by Bugout4x4; 10-27-2017 at 03:47 PM.
#12
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Year: 97
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"The forklift guy must have knocked it loose"
"No... you should have made sure it was still up before you left that Wrap and Gas facility." "And by the way why is your truck throwing an alternative fuel code at me?"
"I added some tranny fluid in the fuel it's good for it."
"Well don't do that anymore...now the computer wants me to shut you down because of emission controls."
"Oh...that's why I have a check engine light?"
"YES!"
lol
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Year: 97
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Yep... We can shut the truck down if needed, like if it was jacked, We can cut or increase torque curve, Reset the governor for max RMP's, Set the idle shut down timer, all kinds of stuff from a remote computer. lol