The clutch switch is used to detect changes of gear and impending the engine load signal such as the de-clutch, engine first gear, move off.. Also, the clutch switch has the cancellation of cruise control. To prevent the engine rpm surging when de-clutching during the gear changes, The ECM adjusts injector operation.
If the ECM does not receive the clutch signal up to 80 Km/h during two driving cycles, this code will be set.
DTC NO.
Detecting Condition
Possible Cause
C 004
? C 004
Error is recognized if the clutch switch supplies no signal to the ECM until of the vehicle speed is reached to 90km/h
? Engine Condition : RUN
? Fuel Limit : NO
? Fuel Cut : NO
? EGR OFF : NO
? MIL : NO
? LIMP HOME MODE
Cruise control system deactivited
? Open or short in circuit
? Clutch s/w
? ECM