dodge caravan intermittent dash gauge problem

1998 Dodge Grand Caravan SE with 3.3L engine.


Dashboard instrumentation occasionally goes dead (all gauges go to zero

or depowered position).


This happened again a couple of days ago, and when the dash came back
alive (within a few seconds) the "Service Engine Soon" light was on.


Retrieved OBD code "P1698"


Is this enough info to identify a likely cause? Your help would be
much appreciated.

 

I had exactly the same problem last year on my 98 Grand Voyager. I opened up
the fuse and relay center under the hood and cleaned it. It was quite dirty.
Seemed to improve things considerably. The cluster problem has happened
since, but far less often (and so far not at all this spring). Indeed, the
entire van seemed to run better after I did the cleaning.

Hope this helps.

 

I came up with "No CCD Message From TCM", TCM is Transmission control
module, CCD refers to the interface that allows the instrument
cluster, body computer, engine computer, and transmission computer to
communicate.

I recently had problems with my 1998 Grand Voyager, 3.3L engine. I also
had the dead dash, intermittantly, but mainly my van either wouldn't
crank at all or would start but die if it did decided to crank. My
problem turned out to be the engine computer, one from a junkyard fixed
it. I searched the internet for info on my problem, and saved useful
info which may help you. Here's info on how the various computers work
together:

"There are a number of computers in these cars in a network, they
communicate
continuously with each other over a communications bus, a twisted pair
of
wires called the CCD bus. The instrument cluster, with the odometer
has a
microprocessor within it as well. The cluster is told what mileage to
display by the BCM (Body Control Module) The BCM communicates with the
(PCM) power control module. This is the mother computer located on the
driver's side under the hood next to the fuse box. The BCM also
communicates with the TCM (transmission control module) located in a
similar
position as the PCM under the hood on the passenger side. In order to
display the correct mileage, the BCM (located drivers side under the
dash)
must get the correct info from the PCM and the TCM. "

Another thing I learned: the dash has built-in diagnostics. Here's info
on that:

"The following is derived from the '97 factory service manual:
The instrument cluster can self test and give you some diagnostics.
With
the ignition switch off, hold down the odo trip and reset buttons.
While
holding these buttons down, turn the ignition switch to on and keep
holding
the buttons down. Continue to hold in the buttons until the word codE
appears in the odo window, it should take about 5 seconds. If there
are
problems, you will get trouble codes. If there is no problem, you will
get
a 999 code for end of test. When chec-0 is displayed, the display will
dim
down. If brightness doesn't change there is a problem. Codes: 110
memory
fault in cluster 111 calibration fault in cluster 905 not CCD bus
message
from TCM, 921 odo fault from BCM, 940 no CCD bus message from PCM.
When
chec-1 is displayed the gauges will move through their calibration
points.
When CHEC-2 is displayed, the odo digits will light sequentially.
Chec-3 is
the PRND3L check. "

Another thing I learned is that many people have had instrument cluster
problems caused by bad solder joints on the connectors where the wire
harnesses connect to the PC board. This could be the cause of your
problem. Info on that:

Symptoms:
1. Put key in, van starts and there is no trouble.
2. Put key in, turn key and have no power to fuel gauge, speedometer,
tach, temperature gauge, gear indicator, odometer. All the indicators
in the top panel: check engine, ABS, Alarm, etc. function properly; van
will "start" but dies the instant I let go of the key.
3. Put key in, no gauges, same as #2, van starts and continues to run
and all gauges come to life (this is the least frequent)
4. Driving along and lose power to the gauges. Van continues to run
without problem - just don't have any idea how fast I'm going.
Sometimes the gauges come back to life while I'm driving.

The fixes:
Pound on the dash on both sides of the steering wheel at once. Hard.
Does it fix it? Good chance it's a cracked solder joint. Info on
fixing that:

"Mine would also do the dash on / dash off while driving, but as you
can see from the posts it also had the starting problem, anyway....,
back in the beginning of October I went ahead and pulled the cluster
out (very simple, maybe took 15 min), on the back of the circuit board
of the cluster where the main connector solders on to the board there
are perhaps 12 solder connections for the plug pins, people had
mentioned to look for cracked or cold solders at those locations
especially at the black wire connections (there are two) I didnt find
any cracked solders however I decided to re-solder them anyway when I
heated one of the black wire pin connections the cold solder joint was
exposed, for all intents and purposes it was barely even making
contact, it was more of a dome of solder, I finished soldering it back
up and reinstalled the cluster, to date i have not had any repeats of
either the starting or on / off of the cluster (knock on wood)."

Note: that's the combined wisdom of a bunch of people, sorry I didn't
copy their names to give credit. Hope this helps with your problem.
-Paul

 

Let me format that a liitle better and repost: (BTW, I used a free
text editor call TextMorph to fix that with a couple of mouse clicks)

Ether Jones wrote: > 1998 Dodge Grand Caravan SE with 3.3L engine.

I came up with "No CCD Message From TCM", TCM is Transmission control
module, CCD refers to the interface that allows the instrument
cluster, body computer, engine computer, and transmission computer to
communicate.

I recently had problems with my 1998 Grand Voyager, 3.3L engine. I also
had the dead dash, intermittantly, but mainly my van either wouldn't
crank at all or would start but die if it did decided to crank. My
problem turned out to be the engine computer, one from a junkyard fixed
it. I searched the internet for info on my problem, and saved useful
info which may help you. Here's info on how the various computers work
together:

"There are a number of computers in these cars in a network, they
communicate continuously with each other over a communications bus, a
twisted pair of wires called the CCD bus. The instrument cluster, with
the odometer has a microprocessor within it as well. The cluster is
told what mileage to display by the BCM (Body Control Module) The BCM
communicates with the (PCM) power control module. This is the mother
computer located on the driver's side under the hood next to the fuse
box. The BCM also communicates with the TCM (transmission control
module) located in a similar position as the PCM under the hood on the
passenger side. In order to display the correct mileage, the BCM
(located drivers side under the dash) must get the correct info from
the PCM and the TCM. "

Another thing I learned: the dash has built-in diagnostics. Here's info
on that:

"The following is derived from the '97 factory service manual: The
instrument cluster can self test and give you some diagnostics. With
the ignition switch off, hold down the odo trip and reset buttons.
While holding these buttons down, turn the ignition switch to on and
keep holding the buttons down. Continue to hold in the buttons until
the word codE appears in the odo window, it should take about 5
seconds. If there are problems, you will get trouble codes. If there
is no problem, you will get a 999 code for end of test. When chec-0 is
displayed, the display will dim down. If brightness doesn't change
there is a problem. Codes: 110 memory fault in cluster 111
calibration fault in cluster 905 not CCD bus message from TCM, 921 odo
fault from BCM, 940 no CCD bus message from PCM. When chec-1 is
displayed the gauges will move through their calibration points. When
CHEC-2 is displayed, the odo digits will light sequentially. Chec-3 is
the PRND3L check. "

Another thing I learned is that many people have had instrument cluster
problems caused by bad solder joints on the connectors where the wire
harnesses connect to the PC board. This could be the cause of your
problem. Info on that:

Symptoms: 1. Put key in, van starts and there is no trouble. 2. Put key
in, turn key and have no power to fuel gauge, speedometer, tach,
temperature gauge, gear indicator, odometer. All the indicators in the
top panel: check engine, ABS, Alarm, etc. function properly; van will
"start" but dies the instant I let go of the key. 3. Put key in, no
gauges, same as #2, van starts and continues to run and all gauges come
to life (this is the least frequent) 4. Driving along and lose power to
the gauges. Van continues to run without problem - just don't have any
idea how fast I'm going. Sometimes the gauges come back to life while
I'm driving.

The fixes: Pound on the dash on both sides of the steering wheel at
once. Hard. Does it fix it? Good chance it's a cracked solder joint.
Info on fixing that:

"Mine would also do the dash on / dash off while driving, but as you
can see from the posts it also had the starting problem, anyway....,
back in the beginning of October I went ahead and pulled the cluster
out (very simple, maybe took 15 min), on the back of the circuit board
of the cluster where the main connector solders on to the board there
are perhaps 12 solder connections for the plug pins, people had
mentioned to look for cracked or cold solders at those locations
especially at the black wire connections (there are two) I didnt find
any cracked solders however I decided to re-solder them anyway when I
heated one of the black wire pin connections the cold solder joint was
exposed, for all intents and purposes it was barely even making
contact, it was more of a dome of solder, I finished soldering it back
up and reinstalled the cluster, to date i have not had any repeats of
either the starting or on / off of the cluster (knock on wood)."

Note: that's the combined wisdom of a bunch of people, sorry I didn't
copy their names to give credit. Hope this helps with your problem.
-Paul

 

i have always seen that code with a bad insturment cluster or bad
connection to it

 

I had the same problem with my 97. The computers take lots of power.
Have your battery tested to make sure it good and strong and make sure the
connections are clean. If you have the factory battery connections cut
the off and put new ones on. I did all this and haven't had this problem
since. No more codes either.

 

The one I just finished working on started that way. Intermittent.
The fix was replacing the Body Control Module.
Not saying yours will be too , but it is VERY POSSIBLE.