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DTC P0031, P0032 HO2S1 HEATER (M/T MODELS) EC-155 [QG (WITH EURO-OBD)] C D E F G H I J K L M A EC 2. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors M71, F45 ● Fuse block (J/B) connector M1 ● 10A fuse ● Harness for open or short between heated oxygen sensor 1 and fuse >> Repair open circuit or short to ground or short to power in harness or connectors. 3. CHECK HO2S1 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch “OFF”. 2. Disconnect ECM harness connector. 3. Check harness continuity between ECM terminal 24 and HO2S1 terminal 1. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK HEATED OXYGEN SENSOR 1 HEATER Refer to EC-156, "Component Inspection" . OK or NG OK >> GO TO 5. NG >> Replace heated oxygen sensor 1. 5. CHECK INTERMITTENT INCIDENT Refer to EC-138, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" . >> INSPECTION END Continuity should exist. |