No Response From Engine Control Module (SCI Only) - Diesel

Test 1 - 3:

Test 4 - 6:

SYMPTOM
NO RESPONSE FROM ECM (SCI ONLY) - DIESEL ONLY

POSSIBLE CAUSES
- Inspect wiring harness and connectors
- Check ECM powers and grounds
- SCI circuit(s) shorted to ground
- SCI circuit(s) shorted to voltage
- SCI circuit(s) open
- SCI circuit(s) shorted together
- Engine control module