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DTC P0171, P0174 FUEL INJECTION SYSTEM FUNCTION EC-315 C D E F G H I J K L M A EC Revision: 2006 August 2006 Murano 3. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect corresponding A/F sensor 1 harness connector. 3. Disconnect ECM harness connector. 4. Check harness continuity between the following terminals. 5. Check harness continuity between the following terminals and ground. 6. Also check harness for 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. A/F sensor 1 terminal ECM terminal Bank 1 1 16 2 75 5 35 6 56 Bank 2 1 76 2 77 5 57 6 58 Continuity should exist. Bank 1 Bank 2 A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal 1 16 1 76 2 75 2 77 5 35 5 57 6 56 6 58 Continuity should not exist. PBIB2293E |