Possible Causes
| Possible Causes |
|---|
| (K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE |
| (K234) MTV SIGNAL CIRCUIT SHORTED TO VOLTAGE |
| (K234) MTV SIGNAL CIRCUIT SHORTED TO THE (K857) 5 VOLT SUPPLY CIRCUIT |
| (K234) MTV SIGNAL CIRCUIT OPEN |
| (K900) SENSOR GROUND CIRCUIT OPEN |
| MANIFOLD TUNE VALVE ASSEMBLY |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .