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Chris, Shop Foreman
Category: Jeep
Satisfied Customers: 13647
Experience:  Jeep Certified Master Tech
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Unlimited: 2006 Wrangler Unlimited 4.0 Automatic. Getting the

Customer Question

2006 Wrangler Unlimited 4.0 Automatic. Getting the following Codes:
p1684, 66, p0218, p0714, 94, p1604, p0700, p0613
The codes appear to indicate that the Transmission Temperature sensor is bad, however some things I have seen online indicate that when P0218 and P0714 pop up together in this model it can be an indication of a faulty computer. How would I test to see if the temperature sensor is bad vs. the computer, or if there is a different problem indicated entirely?
Submitted: 2 years ago.
Category: Jeep
Expert:  Chris replied 2 years ago.
Hello and welcome to just answer. It probably is the computer or a wiring issue. let me see if I can find a wiring diagram and a diagnostic procedure for you. Then you can test it and see if it is a sensor or computer problem. I will get that for you in a bit. Chris
Expert:  Chris replied 2 years ago.
Ok, copy and paste the link below into your browser's address bar and hit enter to see the information. Hopefully this will help. Chris. .
Customer: replied 2 years ago.
The information supplied is more written for someone with an auto shop and the appropriate diagnostic tools. I was more looking for a method of how to determine if the transmission temperature reading is accurate using a voltage offset similar to what is talked about The document you linked to has a lot of "repair as necessary" sections which leaves me unsure how I would proceed.
Expert:  Chris replied 2 years ago.
Ok, do you have a digital volt meter handy and are familiar on how to use it?
Customer: replied 2 years ago.
Expert:  Chris replied 2 years ago.
Ok, good. The first thing we should check is for is continuity on the trans temp sensor signal and ground circuits. Disconnect the PCM C4 connector and the transmission range sensor connector. Then using the info I sent, check continuity between the terminals at the range sensor connector and the PCM connector. Lets make sure that the wires are not open. Chris . ,