Test G

PINPOINT TEST G: THE AUDIO CONTROL MODULE (ACM) DOES NOT RESPOND TO THE DIAGNOSTIC TOOL

Test G1-G2:

Test G2-G3:

Normal Operation
The ACM communicates with the diagnostic tool through the standard corporate protocol (SCP) communications network. Circuits 4-EG10 (GY/BK) and 5-EG10 (BU/YE) receive and transmit data from the ACM to the data link connector (DLC). Degraded SCP performance occurs if one bus line is open, shorted to ground or voltage, or if one but not all termination resistors are lost.

Possible Causes
- circuit 4-EG10 (GY/BK) open
- circuit 5-EG10 (BU/YE) open
- ACM C240c
- ACM