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P0327, P0328, P0332, P0333 KS EC-217 < DTC/CIRCUIT DIAGNOSIS > [VQ40DE] C D E F G H I J K L M A EC N P O 4. Also check harness for short to ground and short to power. OK >> GO TO 5. NG >> GO TO 2. 2. CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II 1. Disconnect knock sensor harness connector. 2. Check harness continuity between ECM terminal 15 and knock sensor (bank1) terminal 1, ECM terminal 36 and knock sensor (bank 2) terminal 1. Refer to Wiring Diagram. 3. Also check harness for short to ground and short to power. OK >> GO TO 4. NG >> GO TO 3. 3. DETECT MALFUNCTIONING PART Check the following. • Harness connectors F67, F250 • Harness for open or short between ECM and knock sensor >> Repair open circuit or short to ground or short to power in harness or connectors. 4. CHECK KNOCK SENSOR EC-218, "Component Inspection" OK or NG OK >> GO TO 5. NG >> Replace malfunctioning knock sensor. Refer to 5. CHECK GROUND CONNECTIONS 1. Turn ignition switch OFF. 2. Loosen and retighten three ground screws on the body. OK or NG OK >> GO TO 6. NG >> Repair or replace ground connections. 6. CHECK KNOCK SENSOR SHIELD CIRCUIT FOR OPEN AND SHORT 1. Disconnect knock sensor harness connector. 2. Check harness continuity between knock sensor terminal 2 and ground. Refer to Wiring Diagram. OK or NG OK >> GO TO 8. NG >> GO TO 7. Continuity should exist. BBIA0547E BBIA0539E Continuity should exist. August 2012 2012 Pathfinder |