No Response From Radio

Test 1 - 3:

Test 4 - 8:

Test 9 - 10:

SYMPTOM
NO RESPONSE FROM RADIO

POSSIBLE CAUSES
- No Response From Radio
- Replace Fuse #18
- Radio Shorted To Ground
- Fused Ignition Switch Output Circuit Shorted To Ground
- Junction Block Shorted To Ground
- Open Fused Ignition Switch Output Circuit
- Open Fused B+ Circuit
- Radio Ground Circuit Open
- Open PCI BUS Circuit
- Radio