Hi, I bought a 1998 Jeep Cherokee 4.0. It's not in great shape, but I want to fix it up myself.

Currently, I'm trying to get the dashboard gauges working. I have a classic problem, but none of the solutions work for me. I checked all the fuses, they're all fine. In the C1 connector of the gauges on pin 6, I don't have a ground. I tried connecting it from another place, but that didn't help either. I also checked the OBD2 connector. On pins 3 and 11, I have about 60-70 Ohms. But when I check the voltage touching pins 3 and 4/5, I get 0V (the same for 11 and 4/5). I also checked another ground at G108.

Strangely, when checking resistance between 3 and 4/5, I have 0 ohms, so I do have a ground on pins 3 and 11.

Of course, I cleaned all the mentioned connectors. I also checked the airbag connector.

The onboard computer (displays zero values) and the central lock are also not working. Any idea?

Thanks in advance for the help.