DTC P0335 Crankshaft Position Sensor "A" Circuit; DTC P0337 Crankshaft Position Sensor "A" Circuit Low Input; DTC P0338 Crankshaft Position Sensor "A" Circuit High Input; DTC P0339 Crankshaft Position Sensor "A" Circuit Intermittent: Description
The crankshaft position sensor consists of a crank angle sensor plate and magnetic resistance element type sensor. The crank angle sensor plate has 34 teeth at 10° intervals (2 teeth are missing for detecting top dead center), and is installed to the rear end of the crankshaft The crank position sensor outputs 34 rotation signals per engine revolution The ECM uses the G2 signal to distinguish between the cylinders, and uses the NE signal to detect the crankshaft position and engine speed
DTC DETECTION CONDITION CHART
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0335 |
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| P0337 | Output voltage of Crankshaft position sensor 0 3 V or less for 4 seconds (1 trip detection logic) |
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| P0338 | Output voltage of crankshaft position sensor 4 7 V or more for 4 seconds (1 trip detection logic) |
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| P0339 | Under conditions (a), (b) and (c), no crankshaft position sensor signal to ECM for 0 05 seconds or more (1 trip detection logic)
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Reference: Inspection using an oscilloscope.
HINT:
- The correct waveform is as shown.
- The wavelength becomes shorter as the engine speed increases
- G2+ and G2- stand for the camshaft position sensor signal, and NE+ stands for the crankshaft position sensor signal.ITEM CONTENT CHART
Item Content Terminal NE+ - NE-
G2+ - G2-Equipment Setting 5 V/DIV, 20 msec/DIV Condition Cranking or idling