40/41TE Automatic Transaxle (GPEC)

U0141 LOST COMMUNICATION WITH FCM

For a complete wiring diagram Refer to Diagrams/Electrical. Electrical Diagrams


Theory of Operation


The GPEC controller communicates over the CAN C Bus. The transmission controller continuously monitors Bus activity. The CAN C Bus is also used to communicate transmission MIL status to the Engine Controller. If the Engine Controller is unable to communicate with the Transmission Controller, a DTC will set and the Engine Controller will illuminate the MIL.


- When Monitored:

Every 7 msec with:


1) Engine speed greater than 500 rpm.


2) Battery voltage between 10 and 16 volts.

- Set Condition:

CAN C Bus messages are not received for 10 seconds.


Refer to Communications for diagnostic procedures and for further possible causes.