No Response From PCM (SCI Bus) - Body

Test 123 - 128:

Test 129 - 131:

SYMPTOM
NO RESPONSE FROM PCM (SCI ONLY)

POSSIBLE CAUSES
- Ground circuit(s) open to data link connector
- "No response" displayed from DRB
- DRB adapter cable defective
- DRB defective
- SCI receive circuit open
- SCI receive circuit shorted to ground
- SCI transmit circuit open
- SCI transmit circuit shorted to ground
- PCM defective (no response)