Hello and welcome to Just Answer!
Could you try this? Press and hold odometer trip button then switch the ignition from lock (Off) to unlock (Run). Hold trip button for 5 seconds then release. The cluster will go through a test sequence and I would like to know if this helps the speedo issue. Thanks,
Holding the trip with the key off will make the speedo return sometimes and I am glad it worked for you. I am glad you tried that, I should have mentioned that but thought the other procedure would work first.
There is one cigar lighter and one power outlet in front. Only one of them is actually designated as a cigar lighter and the other one they call a power outlet. They both look the same and I was just wondering if the lighter outlet works because the radio gets it power from the same relay(accessory relay) Let me look at the wiring diagram and i will get back to you in a bit. thanks,
The radio is on the communication system called the bus. The bus is a single wire that transmits info from one computer to another. The radio has a built in microprocessor and it is able to transmit and receive info on the bus. I think there is something wrong with the radio or the bus communication. The only way to diagnose this problem properly is by using the Chrysler DRB3 scan tool. You can access the radio with the scanner and see if it has any fault codes. If the scan tool can not access the radio then the radio will need to be replaced. I am sure the problem is in the radio itself, but without using the scan tool I can't be 100 percent certain. The accessory relay is turned on by the front control module and that is why I wanted to know if the cigar lighter still had power. I have seen cases where the FCM turns off the relay and the radio will quit. So, if the cigar lighter still has power then you know that the FCM is ok. I hope this helps, let me know! Have a safe and happy holiday season,
FCM is the front control module. It is a module bolted to the front of the fuse box in the engine compartment. This module turns on the accessory relay and this will not be the problem if your cigar lighter has power. Thanks,
Thank you so much for all of your help. Have a Merry Christmas and Happy New Year!
You are very welcome! Thankyou very much,