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DTC P1272, P1282 A/F SENSOR 1 EC-499 C D E F G H I J K L M A EC Revision: 2005 August 2005 Murano 2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT 1. Disconnect air fuel ratio (A/F) sensor 1 harness connector. 2. Turn ignition switch ON. 3. Check voltage between A/F sensor 1 terminal 3 and ground with OK or NG OK >> GO TO 8. NG >> GO TO 3. 3. CHECK CONDENSER CIRCUIT-I 1. Turn ignition switch OFF. 2. Disconnect fuse block (J/B) harness connector M1. 3. Check resistance between fuse block (J/B) terminal 9A and ground. 4. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 4. NG >> GO TO 5. 4. DETECT MALFUNCTIONING PART Check the following. ● Harness connectors M82, F102 ● Fuse block (J/B) connector M1 ● 15A fuse ● Harness for open or short between A/F sensor 1 and fuse >> Repair harness or connectors. Voltage: Battery voltage PBIB2293E PBIB1683E Resistance: Above 1M Ω at 25 ° C (77 ° F) |