Test M

PINPOINT TEST M: THE COMPASS IS INOPERATIVE

Test M1-M3:

Test M3-M5:

Normal Operation
The compass display and module are integrated into the rear view mirror. The rear view mirror receives switched B+ voltage via circuit 75-AD15 (YE/BU). Circuit 31-AD15 (BK/OG) provides the mirror ground.

Possible Causes
- circuit 75-AD15 (YE/BU) open or shorted to ground
- circuit 31-AD15 (BK/OG) open
- rear view mirror