So I am getting codes p0700 + occasionally p0743. I opened up the TCU computer box under the steering wheel, got I think 13 ohms on two of them and 31 ohms on the lock up solenoid C. To test if it was the solenoids or a bad wire, I cut the wires to test each one near the transmission, past the harness in the firewall. I want to verify that these are the correct wires as they are different colors! They were white green and I think purple. On all of these, I got 18 ohms, I think it was a little higher because I was grounding to the exhaust pipe. ANYWAY,

A. that confirms its not the solenoids and I need to check the connectors and wiring harness, right? I Can rule out the solenoids for now?

B. Are those colors correct? I literally can't find any info on it in my haynes manual or online.

 

maybe this will help

https://cdn.xjjeeps.com/pdf/en-us/19...ice-manual.pdf

https://cdn.xjjeeps.com/pdf/en-us/aw...nformation.pdf

 

Got it. Yes, if you’re getting consistent ohms at the transmission side, the solenoids are likely fine focus on the harness/connectors. Wire colors can vary, but white/green and purple are common for solenoid circuits. Check for corrosion or breaks in the harness, especially near connectors. The Haynes manual often skips wire colors try a factory service manual or wiring diagram for your exact model/year. P0743 (lockup solenoid circuit) points to wiring or TCU issues.