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ke6: Check Voltage of VPWR Circuit
Steps _Key On, engine Off
_ISC solenoid disconnected
_DVOM on 20 volt scale
_Measure voltage between VPWR at the ISC solenoid harness connector and battery ground
Result Is voltage less than 10.5 volts?
Direction YES

Service open circuit. Rerun Quick Test

NO

GO to Continue


ISC Information:
ComponentIdle Speed Controller/Idle Bypass Valve
DescriptionThe ISC is used to control engine idle speed and is controlled by the EEC. The ISC allows the EEC to control the engine RPM by allowing intake air flow around the throttle plate.

The ISC has the following functions:
Cold engine fast idle
No accelerator pedal effort required during engine cranking
Dashpot function to help prevent engine stalling upon de-accleration
Over temperature idle boost
Engine idle load correction
LocationMounted onto the throttle body. Cylinder shape device.
Wire ColorsRed
Grey with White stripe
Image