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EC-230 < DTC/CIRCUIT DIAGNOSIS > [VK56VD] P0130, P0150 A/F SENSOR 1 Is 1st trip DTC detected? YES >> Go to NO >> INSPECTION END Diagnosis Procedure INFOID:0000000006217806 1. CHECK AIR FUEL RATIO SENSOR 1 POWER SUPPLY CIRCUIT 1. Disconnect air fuel ratio (A/F) sensor 1 harness connector. 2. Turn ignition switch ON. 3. Check the voltage between A/F sensor 1 harness connector and ground. Is the inspection result normal? YES >> GO TO 2. NO >> Repair open circuit, short to ground or short to power in harness or connectors. 2. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector. 4. Check the continuity between A/F sensor 1 harness connector and ground, or ECM harness connector 5. Also check harness for short to power. Is the inspection result normal? YES >> GO TO 3. NO >> Repair open circuit, short to ground or short to power in harness or connectors. 3. CHECK A/F SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. 2. Disconnect ECM harness connector. 3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector. 4. Also check harness for short to power. Is the inspection result normal? DTC A/F sensor 1 Ground Voltage Bank Connector Terminal P0130 1 F67 4 Ground 3.0 V P0150 2 F68 4 DTC A/F sensor 1 ECM Continuity Bank Connector Terminal Connector Terminal P0130 1 F67 3 F110 88 Existed P0150 2 F68 3 78 DTC A/F sensor 1 ECM Ground Continuity Bank Connector Terminal Connector Terminal P0130 1 F67 3 F110 88 Ground Not existed P0150 2 F68 3 78 DTC A/F sensor 1 ECM Continuity Bank Connector Terminal Connector Terminal P0130 1 F67 6 F110 94 Existed P0150 2 F68 6 74 |