Crankshaft Position Sensor: Testing and Inspection

Crankshaft Position Sensor

INSPECTION

1. CRANKSHAFT POSITION SENSOR (METHOD WITH CIRCUIT TESTER)
1. Disconnect the ground cable from battery.






2. Remove the crankshaft position sensor.
3. Measure the resistance between crankshaft position sensor terminals.






2. CRANKSHAFT POSITION SENSOR (METHOD WITH OSCILLOSCOPE)
1. Prepare an oscilloscope.
2. Remove the glove box lower cover.
3. Remove the lower inner trim of passenger's side.
4. Turn over the floor mat of passenger's seat.
5. Remove the protect cover.






6. Remove the nuts and bolts which hold the ECM to the bracket.






7. Connect the probe to ECM connector.






8. Start the engine and let it idle.
9. Check the pattern is as same as the waveform and voltage shown below.