gauge cluster not working?

i would verify power to the cluster. if you have it, then the cluster is most likely the failure, not the pcm
Roy

I did verify the cluster works. I did the "cluster check" and i put it in my buddys truck that has the same exact truck. The reason im thinking ECM is because thats about the only thing i havent been able to test or check

do you have acess to a scan tool??

Roy

Yes. The only code i get is a "bus error" or something along those lines.

not a code reader, an actual scan tool

Roy

I had ot read at the dealership but they had problems getting it to work because of the bus error

I am soooo sorry. Not sure of it makes a difference or not but its a 2008

hi, i have a 05 ram 1500. when i started it the headlights came on by them selves, my horn, brakelights, wipers and dome lights do not work. the abs and brake lights are on. my speedometer and odometer also dont work. when i run the codes, it comes up c code aa00 ab00 ac 00 ad 00 and oo 00. any ideas?

YOU NEED THE SCANNER TO CHECK BCM
check fuses and replace as needed
some fuses may have feed back may I suggest pulling fuses and check them

Hi I have 2003 Dodge Ram 1500 I plugged in a 2005 instrument cluster and the lights went out.i replaced the ignition fuse and the cluster fuse,re hooked up the 2003 cluster and the cluster lights up but none of the gauges work including the digital is odometer.All the furies are Gd but no speddo are tack air anything but your gear indicator ? So lost

unfortunately the 05 cluster was probably wired different so you may have screwed up the serial data lines a pro will have to scan this to see if they are or not.

ok thanks man im a hd tech can have access to a snap on scanner for a box of beer or do u think its a factory reset idea

no scan it see what you come up with.

Electrical problem
2003 Dodge Ram 1500 quad cab V8 Two Wheel Drive Automatic
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Code 1687-no bus, All gages quit working suddenly and message on dash NO BUS. Will reset when key is turned off but fails again after a while. Need procedure for cleaning connector to cluster?
all warning lights come on when gages fail. But turn signals and dash lights work.

The code needs to be cleared, then truck driven to see if the same code comes back. That is a loss of communication with the instrument cluster.You will need to find a shop with a scan tool capable of bi-directional communication with the PCM to diagnose this.Could be the cluster is bad, could be the PCM or a sensor related to dash readings.

Thanks for quick reply. I have a cheap scanner tool
that i read the codes with. I erased the code and it came back. The truck is my sons and he is still driving it to work. Everything resets after key is turned off .
I talked to him while he was driving home and he said
everthing was fine . He had been driving about 15 mintues but check engine light was still on.
I was told on this site by a customer that cleaning the
cluster connector might work. Can you tell me about that.

If it is just a dirty/bad connection, then yes it would be an easy fix. Remove the cluster and clean all contacts in the plugs in the back. Look for any that are discolored, that would probably be the culprit

Jack Iam sorry about thoses points I gave you.
Iam new to this site and I dont know what Iam doing. Thank you for replying to my question.
Look my son doesnt have the money to take it to the dealer and I dont have it. So thats why Iam hard up for a way I can fix the truck.I have 57 inch projection tv sitting behide me that Iam trying to fix
and Ill be honest electronics is not my thing. I can rebuild a engine but this is way out there. Anyway if you think of anything I can try . please let me know.
Thank you very much

Cleaning all the connections is free, and you might get lucky and it fixes it.Check all the connectors you can find under the dash that look like they feed to it

When I start the truck and drive, the gauges all work fine. While driving the gauges will go from working to not working and back to working again. Check engine, ABS, seat belt, & emergency brake lights all come on. Then Oil, temp, speedometer, odometer, & fuel guages all go left. Any ideas.

If the speedometer cluster is bad. Then why does it work ok after you turn the key off and back on.

If I buy used one will I have to get it reprogramed or the PCM reprogramed thru the dealer? How much would that be.

Can you give me a ballpark cost to have it diagnosed by a dealer.

The dealers Ive checked want over 500.00 for a new speedometer cluster. Would it have to be reprogramed. Are we talking $900.00 to get a new one put in.

CHeck the body control module (BCM) and the ignition switch.

Diagnosis should only be a hour or two of labor. Dont believce it needs to be programed. That is why I said to check the connections. if it is borderline, vibration or heat can cause it to lose the connection, but when key is cycled it gets it back untilk it heats back up, something free to check

Jack, Thanks for the reply. I have some new information about the truck. I talked to my son a few mintues ago and he said it hasnt went blank since last sunday when this all started. Hes been driving it to work and back. He lives 5 mintues from work . So I dont know if thats long enough to test it.
He also said the check engine light went out. I dont know what to think. What would you do. Hes a plumber and works 16 hours a day so thats I havent been able to check it out. A longer test drive for sure.

Even with the light out, it has stored a code. Have him stop by an Autozone and have it scanned (they do it free) get back to me with the code/codes

Electrical problem
2002 Dodge Ram V8 Four Wheel Drive Automatic

2002 dodge 4x4 pick up lights horn gauges stop working remote 2 unlock it as well what can it be.

Check fuses as a 1st step
check battery terminals and wires at and around it
if all checked out OK suspect BCM
try and scan for codes in the BCM
disconnect battery wait a min and reconnect try if all back to normal suspect BCM (body control modul)
I would suspect bad fuse and or wire check if fuses and links OK (use a test light and or volt meter )

gages stopped working; signal lights stopped working; headlights come on when engine is started without turning on headlights; wipers work if turned on before engine is started do not work if turned on after engine is started; radio not controllable from steering wheel controls; dash led display reads: "no bus" ; autozone says they can't attach a scanner to read obd codes, the same was stated by a dodge dealership, the said the problem would have to be chased with a vom.
help!

Fault with Front Control Module it controls all the stuff your have problem with. Located by battery will need to move Integerated Control Module out of way.

Changed the Front Control Module as recommended and still experiencing same problems as originally posted.

my odometer says no bus the instrument cluster doesn't work all lights are on and gauges are all not working, nor does anything on the steering column. no blinkers, high beam, cruise, four ways, brake lights and wipers don't work. after it sits for a while everything will work again for a while then the same thing. had the fuse box out and checked all the connections underneath it looks alright no corrosion. put dialectic grease on the contacts and put it back together. it worked for awhile then the same thing. any ideas. also when we tried to do a diagnostic with scan tool we were getting an error

It sounds like you have a TIPM that is out which is common. You will need to have a shop program it in for you to get the car to work again. Here is the TIPM location so you can see what you are in for when doing the job.

(Check out the diagrams below.)

Please let us know what you find.

Cheers

thanks for your quick reply. I think i need to rephrase my question. i have read no bus means that the instrument cluster is not receiving the required information it needs to operate i am wondering which wires this operates on so i can trouble shoot these to see if it's just a simple wiring issue i.e. corroded connector or wire. before spending $700 on a new cluster. also why would a defective cluster cause my brake lights and controls on the steering column to quit working at them same time?

Thanks again for your reply. Unfortunately I've already taken this to a shop and a professional scan tool has been used as I stated in my first question. The data port is not working and this also seems to be part of the above problems thus it can not retrieve any codes to tell me what is wrong. You really have not answered anything I already new that "no bus" was a communication problem. With the cluster not receiving any info I was only wondering which modules and there location it would be receiving info from so I could check the wiring to see if there was any corrosion that might be causing the trouble. I've always found that checking the simple things first, and if that does not solve the problem then take it to a shop. I work with wiring every day and have in the past worked on networks and all communications happen over some type of wiring it would be nice to eliminate that first. So once I did that I had the TIMP replaced for the tune of $650.00 bucks and the problem went away the truck is working great again. Thanks for your help. I love this site.

Most scan tools cannot access communications networks or give you the information you need. This requires a specialized DRB scan tool that can access the modules that are working and identify the ones not communication. There are numerous modules on this network including ABS, Airbag, PCM. BCM, Instrument cluster, lighting modules, traction modules, etc, etc. You are not equipped to diagnose this properly.

Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help

Cheers

I fixed that before. You have to get wiring diagram for network modules on your car. Than see what type of network it is: Star, Serial, Serial-Paraller, Multiplex. Basically What happens is when one module on network goes dead or shorts internally it will shut down whole network so what you wana do is disconnect modules ONE AT A TIME on that network till your dash comes back to life. Now that you found a glitching module diagnose further or replace. I'm not ASE certified but common sense always wins.

Hey,

Great addition to this thread! Please feel free to help out on the site whenever it can add information that will help people.

Best, Ken

Okay, lets use this wiring diagram to see if the cluster is getting power and grounds. Also check fuse 1 and 7

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please check each power feed and ground

Please let us know what happens.

Best, Ken

2002 Dodge Ram 2500 approx. 90k miles

My husband is in the USAF and is currently over-seas, leaving me in the U.S. and our truck (my only means of transportation) will not start. When I went to go and start the truck, it wouldn't and all the gauges aren't working. I talked to DODGE and they said to bring it in to hook it up and check for codes, but they want $90. and I don't even have that. 2 things come across my screen that says "NO BUS" & "CCD" I haven't the faintest idea what it means, but I've been walking my son about 2 miles to and from school each day, as we don't have a vehicle now. If anyone has any ideas, please let me know!! I could really use any help in any direction! Oh, the electrical is fine, because the lights come on, and the truck "dings" when I have the door open. The truck sounds like it wants to kick up, but won't turn over all the way.

https://www.2carpros.com/trouble_codes/obd2 that should have some good explanations for the NO BUS you could have a friend help you if you dont udnerstand it. also look over all electrical connections on the truck. you might find one loose soemwhere where you wont expect it such as under the air filter anywhere there is electircal wires.

the control cluster is not coming on, no dash lights, no gauges work, no interior lights work, but the heat works and the radio works. all the fuses are good.