ke7: Check Continuity of ISC Circuit
| Steps | _Key Off, wait 10 seconds
_ISC solenoid disconnected _Disconnect processor and inspect both 60 pin connectors for damaged pins, corrosion, loose wires, etc. Service as necessary _Install breakout box, leave processor disconnected _DVOM on 200 ohm scale _Measure resistance between Test Pin 21 at the breakout box and ISC circuit at vehicle harness connector |
| Result | Is resistance greater than 5 ohms? |
| Direction | YES
Service open circuit. Remove breakout box. Reconnect processor and ISC solenoid. Rerun Quick Test. NO GO to Continue |
| Component | Idle Speed Controller/Idle Bypass Valve |
| Description | The
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 |
| Location | Mounted onto the throttle body. Cylinder shape device. |
| Wire Colors | Red
Grey with White stripe |
| Image |  |