No Response From PCM (PCM SCI Bus)

Test 1 - 3:

Test 4 - 8:

Test 9 - 10:

SYMPTOM
NO RESPONSE FROM PCM (SCI ONLY) - SBEC

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
- Powertrain Control Module