Component Location
General Description

Throttle flap actuator controls throttle flap when turning engine OFF as loading or unloading vacuum from vacuum pump installed in alternator with ECM duty control.

Throttle flap valve cut off intake air when turning engine OFF to prevent Over-run( engine does not stop and runs for a while when turning OFF engine because of rotating inertia and fuel leakage in injector nozzle ) of diesel engine.

Checking operation of throttle flap valve is possible as checking that throttle flap valve operates once when turning engine OFF.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

● Signal monitoring

● Throttle flap actuator circuit

● Throttle flap actuator component

Enable Conditions

● Ignition "ON"

Threshold Value

● Open or short in circuit

Diagnostic Time

● 480ms

Fail Safe

Fuel Cut

NO

EGR Off

YES

Fuel Limit

NO

MIL

NO

Schematic Diagram
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Schematic Diagram
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