DTC P0335 Crankshaft Position Sensor "A" Circuit; DTC P0339 Crankshaft Position Sensor "A" Circuit Intermittent: Description
WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
The Crankshaft Position (CKP) sensor system consists of a CKP sensor plate and a pickup coil. The sensor plate has 34 teeth and is installed on the crankshaft. The pickup coil is made of wound copper wire, an iron core and magnet. The sensor plate rotates and, as each tooth passes through the pickup coil, a pulse signal is created. The pickup coil generates 34 signals per engine revolution. Based on these signals, the ECM calculates the crankshaft position and engine RPM. Using these calculations, the fuel injection time and ignition timing are controlled.
DTC DETECTION CONDITIONS AND TROUBLE AREAS
| DTC No. | DTC Detection Conditions | Trouble Areas |
|---|---|---|
| P0335 | When either condition below is met:
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| P0339 | Under conditions (a), (b) and (c), no CKP 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.
- G2+ stands for the Camshaft Position (CMP) sensor signal, and NE+ stands for the CKP sensor signal.
- Grounding failure of the shielded wire may cause noise in waveforms.
ITEMS AND CONTENTS REFERENCE
| Items | Contents |
|---|---|
| Terminals | CH1: G2+-G2- CH2: NE+ - NE- |
| Equipment Settings | 5 V/Division, 20 msec./Division |
| Conditions | Cranking or idling |