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DTC P0031, P0032, P0051, P0052 HO2S1 HEATER EC-161 C D E F G H I J K L M A EC 2. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors E32, F32 ● Fuse block (J/B) No.1 connector E201 ● 10A fuse ● Harness for open or short between heated oxygen sensor 1 and fuse >> Repair 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 and HO2S1 terminal as follows. 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-162, "Component Inspection" OK or NG OK >> GO TO 5. NG >> Replace malfunctioning heated oxygen sensor 1. 5. CHECK INTERMITTENT INCIDENT Refer to EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" >> INSPECTION END DTC Terminals Bank ECM Sensor P0031, P0032 8 2 1 P0051, P0052 9 2 2 Continuity should exist. |