Toyota Celica 2005 Repair Manual page 1566

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2005 CELICA (RM1131U)

IDLE AIR CONTROL (IAC) VALVE

ON−VEHICLE INSPECTION

INSPECT IAC VALVE OPERATION

Initial conditions:

Engine at normal operating temperature

Idle speed set correctly

Transmission in neutral

A/C switch OFF

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

After engine speed are kept at 900 − 1,300 rpm for 5 se-

conds, check that they return to idle speed.

If the rpm operation is not as specified, check the IAC valve, wir-

ing and ECM.

Remove the SST from the DLC3.

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