Clutch switch is connected to clutch pedal and transmits clutch operating state to ECM.
When clutch pedal is depressed during driving, engine load changes from loaded to none loaded condition. However, ECM regards vehicle to be loaded becuase VSS signal is still inputted to it. therefore, ECM controls none loaded engine with the condition suitable for loaded engine.
Accordingly, optimum fuel injection control is not performed then, RPM becomes unstable and smoke is produced.
Clutch operation is detected through clutch switch signal. This signal enables ECM to cope with instant change of load condition.
Besides, clutch switch signal is used to detect engaged gear with vehicle speed and engine speed.
P0830 is set when no clutch switch signal change is detected 1). within 2 sec. after shifting gear during driving. 2). while gear shifts 4 times at above 10Km/h and 1000rpm. This code is due to 1) clutch switch component failure or 2) open or short in circuit 3) improper height of clutch pedal.
? ECM recognize ingaged gear with rpm and vehicle speed sensor signal.
Item
Detecting Condition
Possible Cause
DTC Strategy
Signal monitoring
Clutch S/W circuit
Clutch S/W component
Clutch S/W pedal hight
Enable Conditions
IG KEY "ON"
Threshold Value
No clutch switch signal change is detected until gear shifted 4 times at above 10Km/h and 1500rpm
Diagnostic Time
immediately
Fail Safe
Fuel Cut
NO
EGR Off
Fuel Limit
MIL
Condition
Clutch Pedal Depressed
Clutch Pedal Released
Switch Operation
Switch ON
Switch OFF