what method of ignition trigger does the crankshaft position sensor use?

What sort of sensor(s) does it use to trigger the ignition? Variable reluctor (magnetic pickup)? Optical? or Hall effect?
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Mercedes uses two magnetic pickups on the crankshaft. They are mounted on the bell housing. One reads the teeth on the ring gear for crankshaft speed and one reads a pin on the flywheel. There is also a magnetic pickup on each camshaft to sense camshaft position.

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The crankshaft sensor is located on the rear of the engine up against the firewall on the bell housing. You will need to remove the engine covers and air intake ducts to perform this work.
The crankshaft position sensor in your Mercedes-Benz is also known as the engine speed sensor. This sensor is part of your vehicle`s fuel injection and ignition system. Its job is to measure the engine`s RPM as well as the engine`s crankshaft position.
The crankshaft sensor is one of the key providers of information of the engine control. It detects the speed and position of the crankshaft and forwards this information to the engine control in the form of an electrical signal.
A crank sensor (CKP) is an electronic device used in an internal combustion engine, both petrol and diesel, to monitor the position or rotational speed of the crankshaft. This information is used by engine management systems to control the fuel injection or the ignition system timing and other engine parameters.
Bad Sensors

One common culprit for this problem is the crankshaft position sensor, which measures the position and speed of the crankshaft. The computer uses the information from this sensor to know when to fire the spark plugs. If the sensor isn`t working, the spark plugs won`t fire, keeping the engine from starting.

Crankshaft position sensor (CKP) is an electromagnetic sensor by the help of which the fuel injection system makes synchronization of the fuel injectors operation and the ignition system.
There is no difference. CKP is the abbreviation for crankshaft position sensor.
The crankshaft sensor is located on the rear of the engine up against the firewall on the left side of the bell housing.
Crank position sensors (CKP) are an electronic device used to monitor the position and speed of the crankshaft. The information obtained by the crank sensor helps the PCM control the fuel injection and ignition timing, such as with variable valve timing and other engine parameters set by the manufacturer.
The crankshaft sensor is located on the rear of the engine up against the firewall on the left side of the bell housing.
The Crankshaft Position sensor is normally located in the timing cover or on the side of the block with a cylindrical portion that inserts into the block.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

what method of ignition trigger does the crankshaft position sensor use?
ANSWER : Mercedes uses two magnetic pickups on the crankshaft. They are mounted on the bell housing. One reads the teeth on the ring gear for crankshaft speed and one reads a pin on the flywheel. There is also a magnetic pickup on each camshaft to sense camshaft position.

Replaced Crankshaft Synchronizer, crankshaft position sensor, purge valve, and bank 1 o2 sensor
ANSWER : Hi there. One item that many car owners and even mechanics fail to swap out while changing sensors that trigger OBD-II codes is the wiring harness. More often than not, a loose connection will instantly trigger a code. This is the common problem when the lights and codes appear, but show no symptoms as it’s inconsistent. You might want to be proactive and replace those wiring harnesses to ensure problems don’t pop up when you can least afford them.

CHECK ENGINE LIGHT ON
ANSWER : The on board diagnostic (OBD) sets a pending code each time the ECU detects a problem. It confirms the code if it sees the same problem twice. So you’re really only dealing with the two codes : P0016 and 17.These codes are telling you that the timing between the crankshaft and the camshaft are off on Bank 1 (the driver’s side) cylinder bank. This could be a sensor error, a problem in the reluctor ring on the harmonic balancer, or a timing chain problem. Without doing a thorough diagnosis, it’s impossible to say what parts specifically need to be replaced. If you contact Your Mechanic, they can send a technician to your home or office to investigate the codes on you Mercedes and then let you know what it will take to fix it.

After i changed the crankshaft position sensor, i have a code p0302 which is a misfiring code.
ANSWER : The crankshaft and both camshaft position sensors should be replaced at the same time. Nissan had recalls on these sensors. Also, a simple compression test should be performed to verify no mechanical issues exist.

This car is known to have problems with the fuel injectors, this can be checked with a stethoscope to ensure they are clicking. Consider having a mechanic diagnose your car and replace your crankshaft and camshaft position sensors if necessary.

Camshaft Position Sensor
ANSWER : Hello, thanks for writing in about your Dodge Challenger. From what you’ve described it sounds like you may have a different sensor than what the auto parts store has listed. If you go to the dealer you would be able to get the correct one. They use your VIN to get the correct parts. If you need assistance with finding the right sensor or installing it, consider YourMechanic, as a certified technician can come to your home and ensure a correct replacement of your camshaft position sensor.

Need to replace Accelerator Pedal Position Sensor
ANSWER : The TPS and a scanner to test it is all that you need. The code P0122 points to the sensor but a through pinpoint test should be done to make sure the sensor is failing before you replace it.

If you need help with this, contact a certified mechanic who can diagnose your Check Engine Light code and make the necessary repairs to your vehicle.

I have changed the camshaft position sensor, crankshaft position sensor, spark plugs and plug wires and there still is no fire.
ANSWER : Hi there. If there was a spark around the speed sensor as the engine was starting, then there is a major short in the ignition system. Check all of the wiring grounds and make sure that they all are hooked up and clean. If you are referring that the coils are sparking on the outside, then the coil has a crack on them and they would need replaced. I recommend seeking out a professional, such as one from Your Mechanic, to help you with your ignition system.

How many crankshaft position sensor are there? 2002 Infiniti QX4
ANSWER : Hello – there is only 1 crankshaft position sensor on this engine. It is located on top of the transmission bellhousing at the rear of the engine (driver side). For assistance, I recommend a crankshaft position sensor replacement performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.