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EC-296 < DTC/CIRCUIT DIAGNOSIS > [VQ35DE] P0335 CKP SENSOR (POS) P0335 CKP SENSOR (POS) Description INFOID:0000000010094990 The crankshaft position sensor (POS) is located on the oil pan facing the gear teeth (cogs) of the signal plate. It detects the fluctuation of the engine revolution. The sensor consists of a permanent magnet and Hall IC. When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. Due to the changing magnetic field, the voltage from the sensor changes. The ECM receives the voltage signal and detects the fluctuation of the engine revolution. ECM receives the signals as shown in the figure. DTC Logic INFOID:0000000010094991 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- ing 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 10.5 V with igni- tion switch ON. JMBIA0062ZZ JMBIA0001GB DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0335 Crankshaft position sen- • The crankshaft position sensor (POS) signal is not detected by the ECM during the first • The proper pulse signal from the crankshaft position sensor (POS) is not sent to ECM • The crankshaft position sensor (POS) signal is not in the normal pattern during engine run- • Harness or connectors [Crankshaft position (CKP) sensor (POS) • CKP sensor (POS) |