For a long time, I’ve been trying to fix the dash issue of only having fuel level and battery voltage and speed, and the OBDll 1698 main relay control SC VBatt code and CCD on overhead module.

In the beginning, I was able to disconnect the PCM module while the vehicle was running, and it would reset the dash and the overhead module.

I sent the PCM out to Crites car Computer and when it can back I still had the same code 1698 main Relay so I sent it back again and still have the code1698 Main relay control sc vbatt and overhead module message  CCD.

The truck came with the edge performance module but never worked so I disconnected it.

I purchased another OEM key fob but could never get it to program.

My batteries are good.

I replaced the cables on the batteries.

I replaced the alternator and made sure it was a good one, which took like five different alternators testing at Napa.

The noise suppressor from APPS was installed.

The vehicle has the fuel pump attached to the frame rail and power supplied from the fuse panel under the hood.

I have checked my bus voltage using a breakout box from the OBDll  connector and it’s good.

While testing the ECM connector I caused a spark and now the radio display is not always on but radio works.

I have fixed the ground wire splice on the passenger side near the PCM.

I have the cluster disconnected the bus wires to the radio disconnected the CTM module disconnected, the ABS disconnected, the Airbag disconnected, the overhead module disconnected and the module had a bug that created corrosion on the display pins.

I tried a different overhead module from a wrecking yard truck and it will not even light up.

With the 5 connectors disconnected and I erase the codes I still get 1698 $15 Main relay controlSC VBatt

With 5modules disconnected will it cause the overhead module to display the CCD message or did the bug cause an issue?

Here is how the CCD Network works and the wiring map for it all.

https://mopar1973man.com/cummins/articles.html/24-valve-2nd-generation/engine/electrical/ccd-chrysler-collision-detection-data-bus-r329/?&do=getNewComment&d=4&id=329

Once I had all the modules reconnected less the overhead and I was driving for a day or two all of a sudden the dash cluster started working and the check engine light is on,

I was so happy.

The last things I did was behind the dash on the right hand side I lifted up the wire harness back there inspecting how the sockets looked in the molded plug,

Then I removed the ground wire that is located behind the kick panel on the drivers side which has several wires in 1 lug, and cleaned up that ground with scotch bright.

I was so happy about the dash cluster working, but then my wipers are not functioning all of the time.

I wonder if anybody has any ideas on this wiper working sporadically, it doesn’t matter what position I have the wipers set at sometimes they work sometimes they don’t.

Either the wiper motor park switch is bad. It could be the multi-function switch my 99 Minnie Van has this issue. Ground for the wiper should on the cowl drivers side above like clutch fluid reservoir.

I forgot to add that while I was doing the last checks on my vehicle before the dash started working. I also looked at the C130 connector which is on the right hand side of the fuse block in the engine bay

I’ll take a look at the ground this weekend.