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EC-218 < DTC/CIRCUIT DIAGNOSIS > [HR16DE] P0132 A/F SENSOR 1 Diagnosis Procedure INFOID:0000000009020734 1. CHECK GROUND CONNECTION 1. Turn ignition switch OFF. 2. Check ground connection E15. Refer to Ground Inspection in . Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace ground connection. 2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT 1. Disconnect 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 4. NO >> GO TO 3. 3. DETECT MALFUNCTIONING PART Check the following. • IPDM E/R harness connector F42 • 20A fuse (No. 53) • Harness for open or short between A/F sensor 1 and fuse >> Repair or replace harness or connectors. 4. 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 and ground. 5. Also check harness for short to power. A/F sensor 1 Ground Voltage Connector Terminal F12 4 Ground Battery voltage A/F sensor 1 ECM Continuity Connector Terminal Connector Terminal F12 1 F11 49 Existed 2 53 A/F sensor 1 Ground Continuity Connector Terminal F12 1 Ground Not existed 2 ECM Ground Continuity Connector Terminal F11 49 Ground Not existed 53 |