How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Thomas Your Own Question

Thomas
Thomas, Dodge Mechanic
Category: Dodge
Satisfied Customers: 1518
Experience:  Mechanic with 15 years exp.
3090273
Type Your Dodge Question Here...
Thomas is online now
A new question is answered every 9 seconds

98 Dodge caravan: instrument cluster..the driver side dash

Customer Question

I have a 98 Dodge caravan whose instrument cluster is going in and out at random times. I have tried replacing it with a used one from the junkyard, as well as soldering connections that people on the internet thought might be bad, I have checked all the fuses under the driver side dash and in the engine compartment, and all the connectors I could access. It won't pass emissions because of this. I have also tried replacing the TCM, and tried getting a used PCM, but so far no luck from the junkyard. There is only about 1 Volt on the wire that connects from the instrument cluster to the BCM (Body Control Module). I wonder if this is the problem, and if that wire is output from the BCM into the instrument cluster, or output from the instrument cluster into the BCM. In the first case, what would happen if I just shorted it to a 12V wire, then cut off the part going to the BCM. In the second case, what would happen if I shorted it to 12V and cut off the part going to the instrument cluster
Submitted: 4 years ago.
Category: Dodge
Expert:  Gina-Moderator replied 4 years ago.
Hi,

I'm Gina, a Moderator for JustAnswer. :)

Thanks for your question! I'm sorry that you haven't received an answer yet. The response rate on JustAnswer is usually over 95%, but sometimes questions go un-answered when:

1. the question may be unclear
2. the question seems to request an answer for something that cannot be explained online adequately
3. the Experts that are online simply don't have the resources to answer your question fully

Please feel free to re-word your question or add additional information you might feel helpful for the Experts to assist you.
If you would still like to receive an answer from an Expert, just let me know, and I will do my best to assist you by finding an Expert to help you.

If you have any questions regarding deposits or billing, please feel free to use the help link below:

http://www.justanswer.com/help/contact.aspx


Best,
Gina
JustAnswer Moderator
Customer: replied 4 years ago.
Please let me know if you want me to clarify anything.
Expert:  Thomas replied 4 years ago.
Hello my name is XXXXX XXXXX welcome, does your cluster go completely out when you have this happen? Also you said you fail emissions because of this, does it set a diagnostic trouble code?
Customer: replied 4 years ago.
Thomas, the cluster goes completely out, but sometimes one of the gauges might still work. There is an instrument cluster diagnostic code P1698 having to do with the instrument cluster. Isn't it a problem that the red/white wire coming from the BCM into the instrument panel is only 1V?
Customer: replied 4 years ago.
I cut the wire coming from the BCM (red/white) and hooked it to the fuse positive wire (pink). So the BCM output is now hanging loose and the two hot inputs to the cluster are now shorted together. It seems to work so far. I'd like to revise my question: Will this fix work to reset the error code, and what possible problems could it cause? Also, why is the red/white wire coming from the BCM instead of being shorted to the pink wire (fused B+)? In the circuit diagram it says the red/white wire is ign(off/run/start), which I don't know what it means. And another thing I didn't mention previously because I didn't think it was related is that at random times a beeping will commence and then just as randomly stop.
Expert:  Thomas replied 4 years ago.
Sorry I just god a break I am looking into it farther now..
Expert:  Thomas replied 4 years ago.
Ok I think you did right by putting power to the wire that you did and I don't think there would be a problem from it the other option would be replacement of the BCM. But i don't think that will be nessary. And were it talks about off/run/start it means it should have 12v in the run and start position. The beeping noise I am not sure why it is doing that or if it's related it could be.
Customer: replied 4 years ago.
OK, but why is it necessary to have a BCM input into the instrument cluster if it is just the same as the other wire?
Expert:  Thomas replied 4 years ago.
I don't know why they did it like that, to make it more expensive i guess... Put according to the books all it needs is it's 12v to do the job..
Thomas, Dodge Mechanic
Category: Dodge
Satisfied Customers: 1518
Experience: Mechanic with 15 years exp.
Thomas and other Dodge Specialists are ready to help you
Customer: replied 4 years ago.
Hey Thomas, my problem is still not fixed. The instrument panel worked
for a while, then stopped working. I tried another instrument cluster
and it still didn't work. I measured the voltage between the CCD+ and
ground and the CCD- and ground and they were both oscilating about 0.5
volts on a DC setting so I thought maybe the PCM was bad (Shouldn't it
oscilate about 2.5 volts?), but replacing the PCM didn't help. Is it
possible that all 3 instrument clusters were bad or went bad (they
were all used, not new when I got them)? If so are there specific components I
need to fix on them?
Thanks,
-Iuval
Expert:  Thomas replied 4 years ago.
Did you ever replace the BCM?
Customer: replied 4 years ago.
No. Recall that I initially bypassed the wire coming from the BCM into the instrument cluster. I actually reconnected that wire because it seems to work now. Do you have any idea if a reading of around 0.5V on a DC meter is normal between the CCD wires?
Expert:  Thomas replied 4 years ago.

The normal reading should be 5 volts. Is your problem still exactly the same?

Customer: replied 4 years ago.
Are you sure? Digital voltages are typically highest at 5 V and they go back and forth between 0 and 5, so a DC meter should average that to something around 2.5. It looks to me like having that input from the BCM hooked up directly to 12V fried something--it was steady for a while, then flickering, then dead. Any idea what got fried, in case I can replace it instead of the whole cluster?
Expert:  Thomas replied 4 years ago.
According to my book it should be 0 to 5 volts. I know of nothing you could replace in the cluster it's serviced as a assembly.
Customer: replied 4 years ago.
So how do I tell if the problem is with the PCM or the cluster? Perhaps the rebuilt PCM I got is no good? If it's closer to 0 than 5, maybe there is something wrong with the PCM?
Expert:  Thomas replied 4 years ago.

It could be a bad PCM, it the reman pcm 's seem to be hit or miss.

Customer: replied 4 years ago.
I tested a working van, and the voltage between CCD+ or CCD- and ground is 2.5 on a DC meter. In mine or the remanufactured one it is 0.2 to 0.5
Expert:  Thomas replied 4 years ago.
Well seems like the manual is wrong on that account, so you have a bad instrument cluster it seems.
Customer: replied 4 years ago.
No, this is with the instrument cluster off, just whats coming out of the PCM!
Customer: replied 4 years ago.
No, this is with the instrument cluster off, just whats coming out of the PCM!
Expert:  Thomas replied 4 years ago.
I'm sorry I miss read your info. So the reman PCM is bad or you are losing voltage in the connector or wiring. But you have check your wiring didn't you? So has to be a bad PCM.
Customer: replied 4 years ago.
Yup, that is what I think too. But how likely is it that the reman PCM was bad? I called the company and they said they do not check it in a car to make sure the instrument cluster works. Maybe I´ll try a different company and ask before I buy this time. The company I got the PCM from will reimburse me 80%. A new PCM is about $600. I might also check the junkyard at pull-a-part, but the PCMs go really fast. If I could find someone who be willing to let me plug the PCM in and then reimburse me if it doesnt work, that would be ideal. I also looked at the inside of the PCM, it is filled with some kind of gel, otherwise I could check for bad discrete components like diodes and transistors.
Thanks for your support.
Expert:  Thomas replied 4 years ago.
I think I would try a used 1 also. If pull apart does you no good you can go to car-parts.com to look for a used one.

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I AM VERY GLAD THAT I TOOK A CHANCE ON YOUR PROBLEM SOLVING SKILLS. I WAS SUCCESSFUL IN REPLACING THE FUEL PUMP. MY TRUCK RUNS LIKE A CLOCK. IT RUNS LIKE THE DAY I BOUGHT IT. NO LUNGING FORWARD, THE TURBO REACTS THE SECOND I STOMP ON THE GAS, AND IT HAS A LOT MORE POWER AND EVEN SOUNDS BETTER TO ME. IT SAVED ABOUT $500.00 BY DOING THE WORK MYSELF. I GIVE YOU ALL THE CREDIT FOR YOUR DIAGNOSING THE PROBLEM, JUST FROM THE SYMPTONS I GAVE YOU OVER THE e MAIL. I WILL USE YOUR WEB SITE AGAIN AND REFER MY FRIENDS. THANKS SO MUCH FOR THE HELP. TOM WHITTAKER USA
< Last | Next >
  • I AM VERY GLAD THAT I TOOK A CHANCE ON YOUR PROBLEM SOLVING SKILLS. I WAS SUCCESSFUL IN REPLACING THE FUEL PUMP. MY TRUCK RUNS LIKE A CLOCK. IT RUNS LIKE THE DAY I BOUGHT IT. NO LUNGING FORWARD, THE TURBO REACTS THE SECOND I STOMP ON THE GAS, AND IT HAS A LOT MORE POWER AND EVEN SOUNDS BETTER TO ME. IT SAVED ABOUT $500.00 BY DOING THE WORK MYSELF. I GIVE YOU ALL THE CREDIT FOR YOUR DIAGNOSING THE PROBLEM, JUST FROM THE SYMPTONS I GAVE YOU OVER THE e MAIL. I WILL USE YOUR WEB SITE AGAIN AND REFER MY FRIENDS. THANKS SO MUCH FOR THE HELP. TOM WHITTAKER USA
  • Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless! Rev. Jerry Baysinger Holts Summit, Mo
  • I recently asked a question about my 2005 dodge ram, and I just wanted to let my Expert know that he hit the nail squarely on the head with his answer. I wanted to thank him again. Greg Pittsburgh, PA
  • Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless! Jerry Holts Summit, MO
  • I was skeptical at first but thought I'd give it a try. I was pleasantly surprised. Your site actually is a quality service that I would recommend to others in a heartbeat. Stan Sayre, PA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
 
 
 

Meet The Experts:

 
 
 
  • Jerry

    Master Mechanic

    Satisfied Customers:

    1227
    ASE Master tech, 30 years exp. troubleshooter, driveability tech
< Last | Next >
  • http://ww2.justanswer.com/uploads/SU/supermechanic/2013-8-23_03546_500.64x64.jpg Jerry's Avatar

    Jerry

    Master Mechanic

    Satisfied Customers:

    1227
    ASE Master tech, 30 years exp. troubleshooter, driveability tech
  • http://ww2.justanswer.com/uploads/MO/MoparCertified/2012-6-7_4142_mechanic.64x64.jpg Mopar Certified's Avatar

    Mopar Certified

    Dodge Technician

    Satisfied Customers:

    5813
    24 Year Chrysler/Dodge Certified Specialist
  • http://ww2.justanswer.com/uploads/jeep10000/2008-9-18_222938_192601.jpg Chris's Avatar

    Chris

    Shop Foreman

    Satisfied Customers:

    4041
    ASE and Chrysler Certified Master Tech
  • http://ww2.justanswer.com/uploads/ke4ich/2009-08-12_212931_DSC02211.JPG moparfl's Avatar

    moparfl

    ASE Certified Technician

    Satisfied Customers:

    3285
    ASE Master Tech Gold level Chrysler Status 30 years dealership exp
  • http://ww2.justanswer.com/uploads/DO/dodgerench/2012-8-1_1142_IMG3173.64x64.JPG Dodgerench's Avatar

    Dodgerench

    ASE Certified Technician

    Satisfied Customers:

    2480
    30+ years Dodge/Chrysler exp., ASE Master with L1 certification. Driveability/ combustion specialist
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    Dodge Mechanic

    Satisfied Customers:

    1870
    30 years experience in Dodge Chrysler and Plymouth
  • http://ww2.justanswer.com/uploads/tsmodie/2009-6-10_144056_tim.jpg Tim Mohr's Avatar

    Tim Mohr

    ASE MASTER TECH

    Satisfied Customers:

    1664
    30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
 
 
 
Chat Now With A Dodge Mechanic
Thomas
Thomas
Mechanic
262 Satisfied Customers
Mechanic with 15 years exp.