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P100C VALVE TIMING OFFSET DATA EC-1069 < DTC/CIRCUIT DIAGNOSIS > [MR EXCEPT FOR NISMO RS MODELS] C D E F G H I J K L M A EC N P O P100C VALVE TIMING OFFSET DATA Description INFOID:0000000012198585 Valve timing offset data is measured per engine and written in ECM at the factory. ECM controls VTC accord- ing to the information written in ECM to correct the variation in valve timing which depends on engine. After ECM or engine assembly is replaced, the 2D code affixed to the VTC cover must be written in ECM. If valve timing offset data writing is not completed, ECM detects DTC. DTC Logic INFOID:0000000012198586 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. >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE 1. Turn ignition switch ON and wait at least 5 seconds. 2. Check DTC. YES >> Proceed to EC-1069, "Diagnosis Procedure" . NO >> INSPECTION END Diagnosis Procedure INFOID:0000000012198587 1. PERFORM VALVE TIMING OFFSET DATA WRITING Perform “VALVE TIMING OFFSET DATA WRITING”. Refer to >> INSPECTION END DTC Trouble diagnosis name (Trouble diagnosis con- tent) DTC detecting condition Possible cause P100C V/T OFFSET DATA NOT ECM detects the initial value of valve timing Valve timing offset data writing is not yet imple- |