I have a 2002 dodge grand caravan sport with 4 speed automatic 3.3 engine,the tranny selector is all lite up and no speedo, i have installed a new relay and #15 fuse is ok also install a new solenoid pac also a new tcm from dealer have also checked for broken wires also removed intergraded fuse panel and tried with another one the works but still have no bus message to transmission controller,some one said made ingintion switch? is this a possibity,also how many power wires run to tcm and what kind of voltage should i be getting

Thanks Pat

 

Welcome to DF
The speedo problem maybe the output sensor or a broken wire to the sensor. How long has the lite been on for the trans selector?

 

OH i also replaced input and output sensors also and the lites have been on for 3 weeks

 

Here is the part of the pdf file for code P1698. If you would like the rest,send me a pm with your email address.
Symptom:
P-1698 NO CCD MESSAGES FROM TCM
When Monitored and Set Condition:
P-1698 NO CCD MESSAGES FROM TCM
When Monitored: With the engine running.
Set Condition: No CCD messages are received from the TCM for 10 seconds.
POSSIBLE CAUSES
DRB DOES NOT SHOW BUS OPERATIONAL
CCD WIRING HARNESS OBSERVABLE DEFECT
CCD BUS (+) CIRCUIT OPEN BETWEEN PCM AND TCM
CCD BUS (-) CIRCUIT OPEN BETWEEN PCM AND TCM
PCM DEFECTIVE (NO CCD MESSAGE)
TCM DEFECTIVE (NO CCD MESSAGE)
TEST ACTION APPLICABILITY
1 Ignition On
With the DRB, select 9Transmission9.
Note: The CCD Bus test is automatic.
Does the DRB show 9Bus Operational9?
All
Yes ® Go To 2
No ® Go to the appropriate symptom group for body diagnostics.
2 Ignition Off
With the DRB, select 9Engine9 module.
With the DRB erase trouble codes.
Raise all four wheels off the ground and properly support the vehicle.
Caution: Keep clear of rotating wheels in the next step.
Start the engine. Place the Shift Lever in Drive and allow the wheels to rotate for 1
minute.
Step on the brakes, put the Shift Lever back in Park.
With the DRB read Trouble Codes.
Does display show 9No CCD Message from TCM9 and the start run counter equal to
zero?
All
Yes ® Go To 3
No ® Go To 7

 

IDK how the output speed sensor or wire would affect the code and the range selector illumination issue or the code given?

Not sure how the OP is going to use the diagnostic routine w/o having a DRB?

this problem is definitely in need of a scanner to trouble shoot.

 

There maybe an open wire going to the out sensor, This a common problem that i see all the time. But the owner needs a starting point and that starting point is the bus message from the TCM, and then look at the other problems. And you do need a scanner that can read all modules,not just PCM.

 

a scanner like maybe like a Gensis, or a Monitor 4000, or a Snap-on Solus (MT2500, Ethos, Modus)???

 

mine is doing the same thing. plz let me know win you get yours fix thanks.

 

My truck had a bad negative battery clamp. I changed it and when putting on battery I got a spark. Now it wont crank over and gear selector shows its it's in all the gears with code 1698. Reset code and put rebuilt fuse box and pcm in it and same thing except no code. I put a junkyard tcm in and still have same. Ground cables all right but I took them off and cleaned them up good. Any ideas?