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