On-Vehicle Inspection

IDLE AIR CONTROL (IAC) VALVE

ON-VEHICLE INSPECTION

INSPECT IAC VALVE OPERATION
a. Initial conditions:
- Engine at normal operating temperature
- Idle speed check correctly
- Transmission in neutral position




b. Using SST, connect terminals TE1 and E1 of the DLC1.
SST 09843-18020
c. After engine speed are kept at 1,000 - 1,500 rpm for 5 seconds, check that they return to idle speed.
If the engine speed operation is not as specified, check the IAC valve, wiring and ECM.
d. Remove the SST.
SST 09843-18020