No Response From PCM (SCI Bus) - Body

Tests 1 - 3:

Tests 4 - 8:

Tests 9 - 11:

SYMPTOM
NO RESPONSE FROM PCM (SCI ONLY)

POSSIBLE CAUSES
- Check PCM powers and grounds
- SCI transmit circuit shorted to voltage
- Transmission control module
- SCI receive circuit shorted to voltage
- SCI circuits shorted together
- SCI transmit circuit shorted to ground
- SCI receive circuit shorted to ground
- SCI receive circuit open
- SCI transmit circuit open
- Ground circuits at DLC open
- Powertrain control module