Troubleshooting
DTC P0335 Crankshaft Position Sensor "A" CircuitCIRCUIT DESCRIPTION
DTC Detecting Condition:
The crankshaft position sensor, which detects the engine speed and crankshaft angle signal (NE signal), is installed on the oil pump body.
The NE signal plate has 34 teeth. The NE signal sensor generates 34 signals at every engine revolution. The ECM detects the crankshaft angle and the engine speed by the NE signal.
Reference: INSPECTION USING OSCILLOSCOPE
During cranking or idling, check the waveform between terminals G2 and NE-, and NE and NE- of the ECM connector.
HINT: The correct waveforms are as shown in the illustration.
MONITOR DESCRIPTION
Monitor Strategy:
Typical Enabling Conditions:
Typical Malfunction Thresholds:
If there are no signals from the crankshaft sensor even though the engine is revolving, the ECM interprets this as a malfunction of the sensor.
Wiring Diagram:
Step 1 - 3:
Step 4:
INSPECTION PROCEDURE
HINT:
- Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame records the engine conditions when a malfunction is detected. When troubleshooting it is useful for determining whether the vehicle was running or stopped. the engine was warmed up or not, the air-fuel ratio lean or rich, etc. at the time of the malfunction.
- READ VALUE ON HAND-HELD TESTER OR OBD II SCAN TOOL
a. Connect the hand-held tester or the OBD II scan tool to the DLC3.
b. Start the engine and push the hand-held tester or the OBD II scan tool main switch ON.
c. Select the menu "DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / ENGINE SPD".
- The engine speed can be confirmed in DATA LIST using the hand-held tester or OBD II scan tool. If there are no NE signals from the crankshaft position sensor despite the engine revolving, the engine speed will be indicated as zero. If voltage output of the crankshaft position sensor is insufficient, the engine speed will be indicated as lower RPM (than the actual RPM).