Component Function Check

Without CONSULT 

1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3, 500 and 4, 000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute.
5. Open engine hood.
6. Check the voltage between ECM harness connector terminals under the following condition.

   ECM		ECM		Condition	Voltage
   Connector	Terminal	Connector	Terminal
   F8	33 (HO2S2 signal)	F8	35 (Sensor ground)	Keeping engine speed at 2, 500 rpm constant under no load	The voltage fluctuation cycle takes more than 5 seconds. 1 cycle: 0.6 - 1.0 → 0 - 0.3 → 0.6 - 1.0

   Is the inspection result normal? 

   YES: INSPECTION END

   NO: Go to "DIAGNOSIS PROCEDURE ".