Test A: The Compass Is Inoperative

PINPOINT TEST A: THE COMPASS IS INOPERATIVE

A1:

A2-A4:

A4-A5:

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

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