TEST 2: Making Sure The Cam Sensor Is Getting Power

Making Sure The Cam Sensor Is Getting Power. How To Test The Camshaft Position Sensor (2000-2002 1.8L Nissan Sentra)

If you've reached this point, then the camshaft position sensor is not producing an on/off signal in TEST 1. So in this test section we're going to make sure that the white wire, of the camshaft position connector, is feeding the sensor with 12 Volts DC.

In the photo above, the white wire (of the connector) is identified with the number 3.

IMPORTANT: Do not probe the front of the connector with your multimeter test leads or you will damage the connector and the female terminal in inside it. To check for power or ground, you need to use a back probe or a wire piercing probe.

Let's get started:

  1. 1

    Place the multimeter in Volts DC mode.

  2. 2

    With the red multimeter test lead probe the white wire that connects to the terminal identified with the number 3.

  3. 3

    Connect the black lead of the multimeter to directly on the battery negative terminal.

  4. 4

    When everything is set up, have an assistant turn the key to the On position inside of the car.

    You don't need to crank the vehicle for this test, since voltage will be present with just the key in the On position.

  5. 5

    your multimeter will display 10-12 Volts DC.

Let's take a look at what your test results mean

CASE 1: The multimeter showed 10-12 Volts when the ignition was turned On. This test result confirms that the camshaft position sensor is getting power.

The next test is to verify that the cam sensor has a good Ground. For this test go to: TEST 3: Making Sure The Cam Sensor Is Getting Ground.

CASE 2: The multimeter DID NOT show 10-12 Volts when the ignition was turned On. This result tells you that the cam sensor does not have power.

This result exonerates the camshaft position (CKP) sensor as the cause of the cranks but does not start condition you're trying to solve, since without power, the crank sensor can not create a signal.

TEST 3: Making Sure The Cam Sensor Is Getting Ground

Making Sure The Cam Sensor Is Getting Ground. How To Test The Camshaft Position Sensor (2000-2002 1.8L Nissan Sentra)

In this test section, we're now gonna' make sure that the camshaft position sensor is getting Ground. This Ground is a chassis Ground and so it's provided all of the time (in other words, whether the key is ON or not, Ground is available).

The wire that feeds this Ground is the black wire of the connector and which is identified with the number 1 in the photo above.

IMPORTANT: Do not probe the front of the connector with your multimeter test leads or you will damage the connector and the female terminal in inside it. To check for power or ground, you need to use a back probe or a wire piercing probe.

These are the test steps:

  1. 1

    Place the multimeter in Volts DC mode.

  2. 2

    With the black multimeter test lead probe the black wire that connects to the terminal identified with the number 1.

  3. 3

    Connect the red lead of the multimeter to directly on the battery positive (+) terminal.

  4. 4

    If the all is OK with this circuit, then your multimeter will display 10-12 Volts DC whether the key is ON or not.

Let's take a look at what your test results mean

CASE 1: The multimeter showed 10-12 Volts when the ignition was turned On. This test result confirms that the camshaft position sensor is getting Ground.

So, if the camshaft position sensor is not producing an ON/OFF signal, and it's getting power and Ground, then you can correctly conclude that it's bad and needs to be replaced.

CASE 2: The multimeter DID NOT show 10-12 Volts when the ignition was turned On. This result tells you that the cam sensor does not have ground.

This result exonerates the camshaft position (CKP) sensor as the cause of the cranks but does not start condition you're trying to solve, since without power, the crank sensor can not create a signal.

More 1.8L Nissan Sentra Tutorials

You can find a complete list of tutorials for you Nissan 1.8L equipped car here: Nissan 1.8L Index Of Articles.

Here's a small sample of the tutorials you'll find in the index:

  1. How To Test For A Blown Head Gasket (Nissan 1.8L).
  2. How To Test The Starter Motor (2000-2002 1.8L Nissan Sentra).
  3. How To Test Engine Compression (Nissan 1.8L).
  4. How To Test The 2000-2002 Nissan Sentra 1.8L MAF Sensor (at: easyautodiagnostics.com).
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Nissan Vehicles:

  • Sentra 1.8L
    • 2000,
      2001,
      2002