Component Inspection

NOTE: As ISC actuator has been preadjusted precisely at factory, it must not be taken out of throttle body or disassembled.

- Disconnect connector from ISC actuator.





- Check whether ISC actuator coil is open or short.

ISC actuator resistance at 2O°C (68°F): 3-50 ohms

NOTE: Above data should be used as reference value for determining whether coil is open or short only. ISC actuator resistance may be out of above specified range even when ISC actuator is normal.





- Arrange 4 new 1.5V batteries in series (6.0V in total). With throttle lever in contact with plunger of ISC actuator, connect these batteries to ISC actuator terminals and check ISC actuator for operation.

CAUTION:
- Make sure that connection is made correctly between batteries and terminals. Also, voltage must not be applied for longer than 1 second, or a faulty condition will occur.
- Make sure that connection is correct. Connecting to other terminals may cause damage to closed throttle position switch (idle switch).
- After inspection, be sure to check that CTP switch is ON. If it is OFF, move ISC actuator again and turn CTP switch ON.





- When positive terminal is connected to "E" terminal while plunger is contracted: Plunger expands
- When positive terminal is connected to "D" terminal while plunger is expanded: Plunger contracts

When an abnormality has been found in above checks, replace.