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DTC P0139 HO2S2 EC-223 [KA24DE] C D E F G H I J K L M A EC 6. Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select 7. Check “HO2S2 (B1)” at idle speed when adjusting “FUEL INJECTION” to ±25%. “HO2S2 (B1)” should be above 0.68V at least once when the “FUEL INJECTION” is +25%. “HO2S2 −25%. CAUTION: ● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m ● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Without CONSULT-II 1. Reconnect all harness connectors disconnected. 2. Start engine and warm it up to the normal operating temperature. 3. Turn ignition switch OFF and wait at least 5 seconds. 4. Start engine and keep engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load. 5. Let engine idle for 1 minute. 6. Set voltmeter probes between ECM terminals 56 (Heated oxy- 7. Check the voltage when revving up to 4,000 rpm under no load 8. Check the voltage when revving up to 5,000 rpm under no load. CAUTION: ● Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m ● Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor SEF662Y PBIB2169E AEC874A |