Crankshaft and camshaft position sensor comparison

The purpose of this test is to obtain crankshaft and camshaft position sensor waveforms on the same time-base.  

How to perform the test

View connection guidance notes.

  1. Use manufacturer's data to identify the signal circuits for the crankshaft and camshaft sensors.
  2. Connect PicoScope Channel A to the crankshaft sensor output signal circuit.
  3. Connect PicoScope Channel B to the camshaft sensor output signal circuit.
  4. Minimize the help page. You will see that PicoScope has displayed an example waveform and is preset to capture your waveform.
  5. Start the scope to see live data.
  6. Start the engine and run at idle.
  7. With your waveforms on screen stop the scope.
  8. Turn off the engine.
  9. Use the Waveform Buffer, Zoom and Measurements tools to examine your waveform.

Example waveform

Waveform notes

These known good waveform(s) have the following characteristics:

Channel A is the hall effect crankshaft signal switching from just above battery negative 0 V, to around battery positive 5 V. the waveform is punctuated by the crankshaft position marker.

Channel B is also a 0 V to 5 V hall effect signal displaying this particular camshaft reluctor wheel profile.

Waveform Library

Go to the drop-down menu bar at the lower left corner of the Waveform Library window and select Crankshaft sensor (Hall effect).

Further guidance

Diagnostic trouble codes

Selection of component related Diagnostic Trouble Codes (DTCs)

P0335 - CKP Sensor A Circuit Performance

P0336 - Crankshaft Position (CKP) Sensor A Performance

P0337 - Crankshaft Position (CKP) Sensor Circuit Low Duty Cycle

P0338 - Crankshaft Position (CKP) Sensor Circuit High Duty Cycle

P0339 - Crankshaft Position (CKP) Sensor Circuit Intermittent

P0340 : Camshaft Position Sensor A - Circuit Malfunction (Bank 1)

P0341 : Camshaft Position Sensor A - Circuit Range/Performance (Bank 1)

P0342 : Camshaft Position Sensor A - Circuit Low Input (Bank 1)

P0343 : Camshaft Position Sensor A - Circuit High Input (Bank 1)

P0344 : Camshaft Position Sensor A - Circuit Intermittent (Bank 1)

P0345 : Camshaft Position Sensor A - Circuit Malfunction (Bank 2)

P0346 : Camshaft Position Sensor A - Circuit Range/Performance (Bank 2)

P0347 : Camshaft Position Sensor A - Circuit Low Input (Bank 2)

P0348 : Camshaft Position Sensor A - Circuit High Input (Bank 2)

P0349 : Camshaft Position Sensor A - Circuit Intermittent (Bank 2)

P0365 : Camshaft Position Sensor B - Circuit Malfunction (Bank 1)

P0366 : Camshaft Position Sensor B - Circuit Range/Performance (Bank 1)

P0367 : Camshaft Position Sensor B - Circuit Low Input (Bank 1)

P0368 : Camshaft Position Sensor B - Circuit High Input (Bank 1)

P0369 : Camshaft Position Sensor B - Circuit Intermittent (Bank 1)

P0390 : Camshaft Position Sensor B - Circuit Malfunction (Bank 2)

P0391 : Camshaft Position Sensor B - Circuit Range/Performance (Bank 2)

P0392 : Camshaft Position Sensor B - Circuit Low Input (Bank 2)

P0393 : Camshaft Position Sensor B - Circuit High Input (Bank 2)

P0394 : Camshaft Position Sensor B - Circuit Intermittent (Bank 2)

GT151

Disclaimer
This help topic is subject to changes without notification. The information within is carefully checked and considered to be correct. This information is an example of our investigations and findings and is not a definitive procedure. Pico Technology accepts no responsibility for inaccuracies. Each vehicle may be different and require unique test settings.

Suitable accessories

  • Premium 6-way breakout lead set

    £269.00

  • Multimeter Probes

    £6.00

  • Back-pinning Probe Set

    £40.00

  • Flexible Back-pinning Probe

    £3.00

  • PicoScope Battery Clip

    £2.75

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Guided test: Crankshaft and camshaft position sensor comparison