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Hello and welcome! My name is ***** ***** I can assist you with your question. Does the TPS and MAP sensor have 5 volts with the key on?
Ok, was the PCM replaced?
Start by checking for blown fuses.. especially fuse 22 as this fuse can blow due to a short causing this condition.
If the PCM was not replaced and all fuses check out good, then I would suspect the PCM is going bad. Another possible cause would be any other module on board the vehicle preventing the BUS circuit from working.
The other modules on board the vehicle that can go bad causing this condition are the Sentry Key Immobilizer Module (SKIM), Airbag Control Module (ACM), Transmission Control Module (TCM), Overhead Console (if equipped), Compass (if equipped) and Instrument Cluster. You can unplug these one at a time while monitoring the BUS voltage.
Voltage where? Where would you be checking for voltage?
The voltage on the BUS circuit should be 2.5 volts anytime the key is in the on position. However, if you only have 2 volts going to the TPS and MAP sensor with the key on, this indicates an issue with the PCM. I would check all powers and grounds going into the computer and replace as needed.
I sure do! Test powers and grounds at the Powertrain Control Module (PCM) on the C1 connector. Pins 2 and 22 are power, then check pins 31 and 32 for ground.
Try powering up pin 22. I bet it will start and run.
Pin 22 gets power from fuse 22 in the PDC under the hood. This is the fuse I mentioned earlier to check
Back to square one minus the vehicle starting. I am glad we have made progress.
P1694 NO CCD MESSAGE FROM PCM
When Monitored: Continously with Key On. Set Condition: No CCD Bus messages received from PCM for 20 seconds or invalid messages received for 20 seconds. POSSIBLE CAUSES CCD BUS(-) BETWEEN PCM & TCM OPEN CCD BUS(+) BETWEEN PCM & TCM OPEN TRANSMISSION CCD BUS WIRING DAMAGED TCM DEFECTIVE - CCD BUS OPEN
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Not again! I am so sorry. Here is the BUS circuit that connects all of the modules.
Hello! It's Amedee from just answer.
I am just checking in to see if you need any further assistance?
Let me know!