No Response From PCM (PCM SCI Only)

Test 1 - 3:

Test 4 - 7:

Test 8 - 9:

Symptom:
NO RESPONSE FROM PCM (PCM SCI ONLY)

POSSIBLE CAUSES
- Check PCM Powers and Grounds
- PCM SCI Transmit Circuit Shorted to Voltage
- PCM SCI Receive Circuit Shorted to Voltage
- PCM SCI Circuits Shorted Together
- PCM SCI Transmit Circuit Shorted to Ground
- PCM SCI Receive Circuit Shorted to Ground
- PCM SCI Receive Circuit Open
- PCM SCI Transmit Circuit Open
- Powertrain Control Module