Idle Speed/Throttle Actuator - Electronic: Testing and Inspection

Jumper Installation:

Initial conditions:
^ Engine at normal operating temperature
^ Idle speed set correctly
^ Transmission in neutral range


- Using a jumper wire, connect terminals TE1 and E1 of the check connector.
- Rpm should increase to 1,000 - 1,300 rpm for 5 seconds, and then drop to idle.
- If the rpm operation is not as specified, check the ISC valve, wiring and ECU.

Connector Identification:

Inspect ISC Valve Resistance
- Disconnect the ISC valve connector.
- Using an ohmmeter, measure the resistance between terminal +B and other terminals (ISCC, ISCO).

Resistance: 19.3-22.3 0

- If resistance is not as specified. replace the ISC valve.
- Reconnect the ISC valve connector.