Absolutely sounds like a bad ground!
----- Original Message -----
From: "Rick Barnes" <barnesrv@attbi.com>
To: <dakota-truck@dakota-truck.net>
Sent: Friday, June 07, 2002 10:43 PM
Subject: RE: DML: Dash gone nuts - no bus? Need help fast!
>
> I like Bob's idea, suspect a bad ground first...tend to think simple
> first..
> Rascal
>
> -----Original Message-----
> From: owner-dakota-truck@dakota-truck.net
> [mailto:owner-dakota-truck@dakota-truck.net] On Behalf Of Bob Tom
> Sent: Friday, June 07, 2002 11:33 PM
> To: dakota-truck@dakota-truck.net
> Subject: Re: DML: Dash gone nuts - no bus? Need help fast!
>
>
> At 10:46 PM 6/7/02 -0400, you wrote:
> >--snip--
> >Went to the movies and left a cell phone plugged in and charging.
> >Done it before, haven't had any problems. Started the truck and
> >the gas gauge didn't come up. ABS and Air Bag lights stayed on,
> >and a chime rang. I shut down and fired it up, and everything was
> >OK.
> >
> >Got a little ways down the road and the ABS and Air Bag lights
> >came back on, and the chime. Then all was well again.
> >
> >A little further along, the odometer started flashing, then read "no
> bus".
> >ALL gauges went dead, and the ABS, Air Bag, and Low Gas light came
> >on. Chimes again. Then it recovered.
> >
> >And then it was dead again. And stayed dead the rest of the way home.
> >Overdrive doesn't respond either. -- snip --
>
> Andy
>
> Your symptoms are the same that I get when I run the '96 MP PCM
> in my '97 Dak. In '96 and prior, signals from sensors for the dash
> gauges and indicators came directly, for the most part, from the pcm.
> In '97 and later, dash sensor signals (for the most part) go to the
> pcm then via a bus to the Central Timer Module (CTM) then via bus
> to the dash pod.
>
> In my case, I'm not getting any signals from the CTM because
> the '96 MP PCM doesn't send any there. In your case, I suspect
> your dash pod is not receiving signals from the CTM. It may
> be the bus between the dash and CTM, or it may be the CTM
> itself or maybe the CTM has a faulty ground. The CTM is located
> at the end of the dash on the passenger side beside the glove box.
> I think the ground is behind the CTM or near the firewall there.
>
> I think you have to remove the glove box (maybe whole dash?) to get
> to the CTM. If problem remains intermittent, suspect faulty ground
> wire.
>
> HTH, Bob.
>
>
>
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