Hi All, New to the forum.

I have a 2002 Dodge Grand Caravan with the 3.3 V6. I recently purchased this van and it has a bunch of problems I didn't catch when I got it. I have sorted out most of the problems but this one is giving me issues.


It is throwing a code p01698: No CCD from TCM.


Some symptoms:
1. Doesn't want to up shift in all gears unless I release the throttle slightly after each acceleration. Downshifts slightly rough at times.
2. All the PRND indicators are lit up and circled on the dash. Otherwise no dash issues other then the airbag warning light is on.
3. No check engine light. Code was retrieved using the 3 key on dance.
4. Trans fluid is nice and red with no burnt or foul smell. Im suspecting that the trany fluid and filter may have been replaced with possibly incorrect fluid (dexron?) However I don't have any proof that this is so. I am planning on a flush with the right fluid and filter just to make sure.


Was wondering how you guys would proceed with fixing and weeding out this problem. Im on a budget but do want to fix it properly.


Thanks

 

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 ToSymptom:
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
TEST ACTION APPLICABILITY
3 Ignition Off
Disconnect the PCM Connectors.
Disconnect the TCM Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the CCD Bus (+) Circuit between the PCM and TCM
Connectors.
Is the resistance below 5.0 ohms?
All
Yes ® Go To 4
No ® Repair the open CCD Bus (+) Circuit between PCM and TCM.
Perform Powertrain Verification Test VER-2A.
4 Ignition Off
Disconnect the PCM Connectors.
Disconnect the TCM Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the CCD Bus (-) Circuit between the PCM and TCM
Connectors.
Is the resistance below 5.0 ohms?
All
Yes ® Go To 5
No ® Repair the open CCD Bus (-) Circuit between the PCM and TCM.
Perform Powertrain Verification Test VER-2A.
5 Key On
Using the DRB under 9Transmission9 select 941TE9.
Does the DRB display show 9No Response9?
All
Yes ® Replace the Transmission Control Module.
Perform Powertrain Verification Test VER-2A.
No ® Go To 6
6 If there are no potential causes remaining, the Powertrain Control Module is
assumed to be defective.
View repair options.
All
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-2A.
7 Ignition Off
Using the schematic as a guide, inspect the Wiring and Connectors.
Were any problems found?
All
Yes ® Repair as necessary.
Perform Powertrain Verification Test VER-2A.
No ® Test Complete.

 

Thanks for the information. I have some more information.


Went on a longer test run and picked up some ATF+4 and changed the trany oil and filter. Immediate difference in shifting quality. The harsh shifts were gone and shifts felt like what you would expect them to feel like. However the "no upshift without de-acceleration" problem remains.


As I was cruising along I noticed that I was only doing about 40 miles an hour on the speedometer but it seemed like 55. Whipped out the gps on the phone an sure enough, 62 miles an hour!


Would this possibly be the output speed sensor? If the PCM cant tell what speed the vehicle is going that would explain why it isn't shifting when its supposed to... any thoughts?

 

I'm certainly no Master Tech but based on reading multiple GC/T&C forums for years the usual indications of a bad output sensor, besides a corresponding code, are simultaneous erratic speedo indications and erratic gear shifting. At first glace your symptoms fit. Looking deeper, by erratic speedo I mean jumping, skipping and by erratic shifting I mean hunting or wandering to find the correct gear. Not sure your's fits that. All that said, output sensors are cheap and a logical first step. I would say though your boxed PRNDL and P1698 code lead me to the communications bus and the usual fix for that is either a wiring issue, TRS sensor or the TCM.

BTW -"It is throwing a code p01698: No CCD from TCM." Not a major deal but CCD applies to 3rd generation vans. Your's is a 4th gen van. It uses the newer PCI data bus communications. The code meaning stays the same. Just applies to the PCI bus.

 

thank you cougar41 for your reply!


Im pretty much in the same mind set that you are.


My current plan of attack is speed sensors (ordered), then wiring and connections, then tcm, then dash fix. I may just replace the tcm anyway because it seems to be a failure prone part with the mileage I have on this van.


I have read some threads that say the clockspring may be causing the airbag warning light to be on, altho all other functions seem to work (horn cruise etc)

 

Well, 2 speed sensors and a TCM later and no change. Absolutely made no difference. speedo still degrades up to 10 miles an hour, hard down shift from 2-1, and no upshift without letting off the throttle.




On the upside I found and fixed the evap leaks got rid of evap codes.