Possible Causes
| Possible Causes |
|---|
| 5-VOLT SUPPLY CIRCUIT OPEN OR SHORTED |
| MAP SIGNAL CIRCUIT SHORTED TO GROUND |
| MAP SIGNAL CIRCUIT SHORTED TO SENSOR GROUND CIRCUIT |
| MAP SIGNAL CIRCUIT OPEN/HIGH RESISTANCE |
| MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .