No Response Condition From ECM (Diesel Engine Control)

Tests 1 - 3:

Tests 4 - 8:

Tests 9 - 13:

SYMPTOM
NO RESPONSE CONDITION FROM ECM (DIESEL ENGINE CONTROL)

POSSIBLE CAUSES
- DRB adapter cable
- Fused ignition switch output circuit open
- ECM
- ECM ground circuit open
- SCI receive circuit open
- SCI receive circuit shorted to ground
- Transmit circuit shorted to Receive
- DRB
- Fused B(+) circuit open
- SCI shorted to ground
- SCI Transmit circuit open