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P0327, P0328 KS EC-341 < DTC/CIRCUIT DIAGNOSIS > [MR FOR NISMO RS MODELS] C D E F G H I J K L M A EC N P O P0327, P0328 KS DTC Logic INFOID:0000000012197883 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10 V at idle. >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE 1. Start engine and run it for at least 5 seconds at idle speed. 2. Check 1st trip DTC. YES >> Proceed to . NO >> INSPECTION END Diagnosis Procedure INFOID:0000000012197884 1. CHECK KNOCK SENSOR GROUND CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect knock sensor harness connector. 3. Disconnect ECM harness connector. 4. Check the continuity between knock sensor harness connector and ECM harness connector. 5. Also check harness for short to power. YES >> GO TO 2. NO >> Repair or replace error-detected parts. 2. CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT 1. Check the continuity between knock sensor harness connector and ECM harness connector. DTC No. Trouble diagnosis name (Trouble diagnosis con- tent) DTC detected condition Possible cause P0327 KNOCK SEN/CIRC-B1 An excessively low voltage from the knock sen- • Harness or connectors (Knock sensor circuit is open or short- • Knock sensor P0328 KNOCK SEN/CIRC-B1 An excessively high voltage from the knock + − Continuity Knock sensor ECM Connector Terminal Connector Terminal F12 2 F25 35 Existed |