Diagnostic trouble code (DTC) information
Condition
The transmission control module (TCM) and engine control module (ECM) communicate via a standardized serial interface - CAN (Controller Area Network) -to exchange information. Both control modules send and receive information via two signal cables - CAN H and CAN L. Diagnostic trouble code (DTC) TCM-DF13, TCM-DF14, TCM-DF15, TCM-DF16 or TCM-DF18 is stored (depending on the fault and cable) if the transmission control module registers an open-circuit in the CAN wiring or a short-circuit to supply voltage or ground.
Possible Source
The cable between (TCM) terminal #27 and (ECM) terminal #27 (CAN H):
- TCM-DF13: short-circuit to supply voltage
- TCM-DF15: short-circuit to ground
- TCM-DF18: open-circuit.
The cable between (TCM) terminal #26 and (ECM) terminal #57 (CAN L):
- TCM-DF14: short-circuit to ground
- TCM-DF16: short-circuit to supply voltage
- TCM-DF18: open-circuit.
Fault symptom[s]
Fault symptoms for DF13 - DF16
- The warning lamp for the automatic transmission flashes.
Fault symptom for DF18
- The warning lamp for the automatic transmission flashes.