Diesel Data: Automotive Repair

Idle Speed/Throttle Actuator - Electronic: Testing and Inspection

ON-VEHICLE INSPECTION

INSPECT IAC VALVE OPERATION

a. Initial conditions:
- Engine at normal operating temperature
- Idle speed set correctly Transmission in neutral
- A/C switch OFF




b. Using SST, connect terminals TC and CG of the DLC3.

SST 09843-18020

c. When the engine speed is maintained between 900 - 1,300 rpm for 5 seconds, check that it returns to idle speed.

If the rpm operation is not as specified, check the IAC valve, wiring and ECM.

d. Remove the SST from the DLC3.

SST 09843-18020