No Response From PCM (PCI Bus)

Test 117 - 120:

Test 121 - 122:

SYMPTOM
NO RESPONSE FROM PCM (PCI BUS)

POSSIBLE CAUSES
- PCM DEF internal PCI bus open
- PCM PCI bus circuit open
- Fused B(+) circuit less than 10.0 volts
- Fused ignition switch output circuit open
- PCM ground circuit(s) open