No Sound From All Speakers

Test 1 - 3:

Test 4 - 6:

SYMPTOM
NO SOUND FROM ALL SPEAKERS

POSSIBLE CAUSES
- Open radio choke output circuit
- Open ground circuit
- Open power antenna relay output CKT- radio/ radio choke
- Open radio 12V output circuit
- Power antenna relay output CKT- short to ground
- Defective radio
- Defective radio choke relay