,have 1997 plymouth grand voyager, instrument cluster goes out while driving code #p1698, if u hit dashboard above cluster it usually comes on has 3,3 litre enginel

ECM electronic control module not working may be a loose wire or bad ground

P1698 DODGE - DTC Detected in Companion JTEC Mod

Usually a problem with the connector on the back of the cluster, or the printed circuit board inside the cluster.

try checking the fuses

It could be a loose plug on the instrument pannel or a blown fuse. Sometimes if you hit your dash right above the guages they will come on for a seccond. That will tell you its a loose plug on the guage cluster. First I would check the fuses though. Hope that helps. Write back if neither of those work.

P1698 No CCD message from TCM , have no idea what it means though as a europeon model of the same vehicle just says cannot connect on my reader

Replaced once before and still periodically happens. Disconnect battery and reconnect and it starts working on our voyager.

It sounds like the connection to the cluster is not making good contact.

It's a common problem on the Caravans, the problem is the wire harness at the back of the Instrument Cluster has a bad or cracked solder on the circuit board. If your remove the cluster from the dash and disconnect the wire harness, the clip on the circuit board at the center of the cluster that the wire harness connects to is the culprit. With a solder gun and some solder, you can fix this problem by re-soldering the terminals to the wire harness clip on the circuit board. Good luck and hope this helps, if your cluster goes off and does not come back on, give the top of the dash a good thump with your hand and the cluster should come back to life.

you need to go over your entire wiring harness, under the hood and inside the dash. Start with the ground wire on the battery and work your way inside. It sounds like there is a loose ground wire somewhere