1999 Dodge Caravan

Tiny
MLIEDKE
  • MEMBER
  • 1999 DODGE CARAVAN
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 15,538 MILES
I do have a engine light on it sais (service engine soon)
I tride to get a readout from my tool and I get the code
(p1698 mod 40
please help out and let me know what to do.
Thanks for your help
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Wednesday, March 18th, 2009 AT 7:06 PM

1 Reply

Tiny
BMRFIXIT
  • EXPERT
Check fuses and wiring at the TCM
check for power at the TCM

This is what may book say about the code you have

DTC P1698: NO CCD MESSAGES FROM TCM
1. Turn ignition on with engine off. Select TRANSMISSION and then 41TE on scan tool. Scan tool automatically performs a self-test on the CCD bus. If scan tool displays BUS OPERATIONAL, go to next step. If scan tool displays does not display BUS OPERATIONAL and a BUS failure message is displayed, see appropriate VEHICLE COMMUNICATIONS article in ACCESSORIES & EQUIPMENT.

2. Ensure ignition is on. Select ENGINE MODULE on scan tool. Using scan tool, clear DTCs from PCM. Raise and support vehicle so all wheels are off the ground.

3. Start engine and allow engine to idle. Place shift lever in Drive, allowing front wheels to rotate for one minute. Apply brakes. Place shift lever in Park. Using scan tool, check for stored DTCs. If DTC P1698: NO CCD MESSAGES FROM TCM with a start run count of zero exists, go to next step. If DTC P1698: NO CCD MESSAGES FROM TCM with a start run count of zero does not exist, go to step 8.

4. Turn ignition off. Disconnect connectors at PCM and TCM. PCM is located between driver's side front fender and power distribution center, near battery. TCM is located on passenger's side front corner of engine compartment, on passenger's side inner fender panel.

5. Using ohmmeter, check resistance between PCM connector terminal No. 59 (Violet/Brown wire) and TCM connector terminal No. 43 (Violet/Brown wire). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open circuit on Violet/Brown wire between PCM and TCM. Perform TEST VER-2A.

6. Using ohmmeter, check resistance between PCM connector terminal No. 60 (White/Black wire) and TCM connector terminal No. 4 (White/Black wire). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open circuit on White/Black wire between PCM and TCM. Perform TEST VER-2A.

7. Reinstall connectors on PCM and TCM. Turn ignition on. Select TRANSMISSION and then 41TE on scan tool. If scan tool displays NO RESPONSE, replace TCM. Perform TEST VER-2A. If scan tool does not display NO RESPONSE, replace PCM. Perform TEST VER-2A.

8. Turn ignition off. Inspect wiring and connectors between PCM and TCM. PCM is located between driver's side front fender and power distribution center, near battery. TCM is located on passenger's side front corner of engine compartment, on passenger's side inner fender panel. If no problems exist, test is complete. If any problems exist, repair wiring or connectors as necessary
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Wednesday, March 18th, 2009 AT 7:47 PM

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