How To Test a Mitsubishi Galant Crank Sensor

How To Test a Mitsubishi Galant Crank Sensor

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Your Mitsubishi Galant Crank Sensor is a vital part of how your engine operates. This is a three pin hall effect style sensor that’s mounted to the front of your engine. As your Mitsubishi crankshaft spins, there’s a crank trigger plate that the sensor reads. This helps your Mitsubishi Engine Control Unit (ECU) determine engine speed and position.

Without this information your engine will not start, and it could lead to a serious driving condition. If your crank position sensor fails while your vehicle is moving, it could shut off your engine completely. This is dangerous as your Galant would be moving without the benefit of power steering or power brakes.

Today I’ll be showing you how to test your Galant Crank Sensor in a 1999 2.4 liter Galant ES. This sensor shares a lot of similarities with the 2.0 liter Mitsubishi crank sensors, and you’ll need a digital multimeter to perform this tutorial.

Mitsubishi Galant Crank Position Sensor

This sensor is relatively easy to test and it’s located on the timing belt side of your SOHC Mitsubishi engine. This three pin triangular connector is mounted to the back of your timing valve cover, and can easily be disconnected for testing.

Symptoms of a failed Galant Crank Sensor

  • Galant won’t start
  • Car turns off randomly
  • Check Engine Light ON
  • Intermittent starting problems

How To Test your Galant Crank Sensor for Power

Open your Mitsubishi Galant engine bay and find the crank position sensor connector. Look along the backside of your timing belt cover to find this triangular plug. Insert your Galant ignition key and turn it to the “ON” position.

How To Test a Mitsubishi Galant Crank Position Sensor 3

In order to test your Galant Crank Sensor you’ll need to start with the power and ground wires. Using our crank position sensor wiring schematic, unplug the crank sensor and gently probe the ENGINE harness. You will be testing for power at PIN C on the Mitsubishi Galant 2.4 liter wiring harness.

How To Test a Mitsubishi Galant Crank Position Sensor 4

If you don’t have power at this wire, make sure your ignition is turned to the “ON” position. Remember that you are testing at the ENGINE harness side of your Galant. Once you have determined you have power at this wire, move on to PIN A, which is the low reference ground signal.

After you have determined you have power and ground at your crank position sensor, the last step is to test for signal. This is a bit difficult as it requires your crank to move. However using our How To DIY guide, you can test for your Galant Crank Sensor signal.

How To Test your Galant Crank Sensor Signal

Now reconnect the crank angle sensor in your 2.4 liter engine. Using your multimeter pierce PIN B of the Galant crank sensor wiring harness. Now using a crank wrench or a 1/2 inch drive, slowly turn your crankshaft over.

Although you could crank the engine manually, it’s best not to do this for this part of the test. To make things easier, relieve the combustion chamber pressure by removing your spark plugs.

Monitor the crank position sensor signal wire and you should see a fluctuating signal of 0 and 5 volts of DC power. If any of these readings on your Galant Crank Sensor are off, it’s time you install a replacement crank angle sensor in your Mitsubishi.

Have any questions about our Galant Crank Sensor How To DIY Guide? Leave them for us below and let us know!

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