3-46 ENGINE CONTROL SYSTEM
START-IN-GEAR PROTECTION SYSTEM
■ Control by Neutral switch
A switch to detect neutral gear position is located on the throttle lever holder and operated by the clutch con-
trol lever.
This ON/OFF type switch is ON in neutral and OFF in forward or reverse.
On starting the engine, the ECM detects the shift position using the neutral switch.
When the neutral switch is OFF, the ECM does not provide starter motor relay operating signal.
■ Control by Shift position sensor
A shift position sensor is installed on the throttle lever holder and detects the shift position with the clutch
lever operation interlocked.
This sensor is a variable resistor that changes resistance in accordance with the shift position.
The resistance changes (increase/decrease) the voltage signal output from the sensor to the ECM. Based
on the sensor voltage, the ECM calculates and detects shift position.
On starting the engine, the ECM does not provide an injector operating signal when a shift lever in-gear
position is detected.