Overview ENGINE CONTROLS - INPUT SENSORS - Autoshop 101
Overview ENGINE CONTROLS - INPUT SENSORS - Autoshop 101
Overview ENGINE CONTROLS - INPUT SENSORS - Autoshop 101
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Other Inputs Affecting Injection<br />
and Spark Correction<br />
Engine Cranking Signal (STA)<br />
STA is a digital signal which is used by the<br />
ECU to determine if the engine is being<br />
cranked. The signal is generated at the ST1<br />
terminal of the ignition switch and is used by<br />
the ECU primarily to increase fuel injection<br />
volume during cranking.<br />
<strong>ENGINE</strong> <strong>CONTROLS</strong> - <strong>INPUT</strong> <strong>SENSORS</strong><br />
The STA circuit is wired to the ECU as shown<br />
in the diagram. The ECU will sense cranking<br />
voltage at the STA terminal whenever the<br />
ignition is switched to the "start" position as<br />
long as the neutral or clutch switch is closed.<br />
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