Fuel Control: Notes
ECM controls fuel system based upon sensor input signals. If feedback system does not function properly, check input signals before replacing ECM.
FUEL CONTROL SYSTEM INPUT SIGNALS
| Application |
Model Usage |
| A/C Clutch Signal |
Q45 |
| Battery Voltage |
Q45 |
| Closed Throttle Position Switch |
Q45 |
| Crankshaft Position Sensor |
Q45 |
| EGR Temperature Sensor |
Q45 |
| Engine Coolant Temperature |
Q45 |
| Heated Oxygen Sensor |
Q45 |
| Ignition (START) Signal |
Q45 |
| Mass Airflow Sensor |
Q45 |
| Park/Neutral Switch |
Q45 |
| Power Steering Pressure Switch |
Q45 |
| Secondary Throttle Sensor |
Q45 |
| Sub-Crankshaft Position Sensor |
Q45 |
| Throttle Position Sensor |
Q45 |
| Vehicle Speed Sensor |
Q45 |