Fault Symptom 3

Diagnostic Trouble Code In The ACC Unit Or DCC Unit:

46391 No signals from the EDU control module to the ACC unit

F2 No signals from the EDU control module to the DCC unit

Temperature indication is normal in the EDU control module.





Action

1 Check for temperature indication pulses across pin 23 and ground. If pulses are present, the fault could be in the ACC.

2 If the temperature indication signal is a steady 10v and the connection from the ACC unit or DCC unit is normal, the fault is probably in the EDU control module. If no reading is obtained, the fault is either in the ACC or the wiring between the two units.

Signal Levels