DTC P0335, P0339; Crankshaft Position Sensor "A" Circuit [08/2013 - 08/2016]: Description

WARNING: This page is about a different variant/trim than selected.

The crankshaft position sensor system consists of a No. 1 crankshaft position sensor plate and a pickup coil.

The No. 1 crankshaft position sensor plate has 34 teeth and is installed on the crankshaft. The pickup coil is made of wound copper wire, an iron core and a magnet. The No. 1 crankshaft position sensor plate rotates and, as each tooth passes by the pickup coil, a pulse signal is created. The pickup coil generates 34 signals per engine speed. Based on these signals, the ECM calculates the crankshaft position and engine speed. Using these calculations, the fuel injection duration and ignition timing are controlled.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P0335	Crankshaft Position Sensor "A" Circuit	One of the following conditions is met (1 trip detection logic): No crankshaft position sensor signal to ECM while cranking. No crankshaft position sensor signal to ECM while engine running. Missing crankshaft position sensor signal despite camshaft position sensor (No. 1 crank position sensor) signal inputs normal after engine cranked.	Open or short in crankshaft position sensor circuit Crankshaft position sensor No. 1 crankshaft position sensor plate ECM	Comes on	DTC stored
P0339	Crankshaft Position Sensor "A" Circuit Intermittent	Under conditions (a), (b) and (c), no crankshaft position sensor signal to ECM for 0.05 seconds or more (1 trip detection logic): (a) Engine speed is 1000 rpm or higher. (b) Starter signal off. (c) 3 seconds or more have elapsed since starter signal switched from on to off.	Open or short in crankshaft position sensor circuit Crankshaft position sensor No. 1 crankshaft position sensor plate ECM	Does not come on	DTC stored

Reference: Inspection using an oscilloscope.

HINT:

The correct waveform is as shown.
Grounding failure of the shielded wire may cause a noisy waveform.

ECM Terminal Name	Between NE+ and NE-
Tester Range	5 V/DIV., 20 ms./DIV.
Condition	Idling with warm engine