db20: Service Code 64: Attempt to Generate Code 54
| Steps | _Key OFF, wait 10 seconds
_Disconnect vehicle harness from ACT sensor. Inspect for damaged pins, corrosion, loose wires, etc. Service as necessary _Rerun Key ON, Engine OFF Self-Test |
| Result | Is Code 54 present? |
| Direction | YES
Replace ACT sensor. Reconnect ACT sensor. Rerun Quick Test NO GO to Continue |
| Component | Air Charge Temperature Sensor |
| Description | The ACT provides the EEC with mixture (air and fuel) temperature information. The ACT is used both as a density corrector to airflow calculation and to proportion the cold enrichment fuel flow. |
| Location | Threaded into the lower intake manifold. |
| Wire Colors | Black with White stripe
Pink with Black stripe |
| Image |  |