Diesel Data: Automotive Repair

Test A: No Communication With The Audio Control Module

PINPOINT TEST A: NO COMMUNICATION WITH THE AUDIO CONTROL MODULE


A1-A2:






Normal Operation
Voltage is supplied to the audio control module on circuit 1111 (VT). The audio control module is grounded through circuit 1204 (BK/OG).

Possible Causes
- circuit 1111 (VT) open
- circuit 1204 (BK/OG) open
- audio control module