Where is the crankshaft sensor situated - 2005 Nissan Almera 1.6

This system does not use the ignition module used on the DI systems in the past. The VCM controller now controls the ignition control (IC) and bypass functions.
The crankshaft sensor, located in the front engine cover, is perpendicular to a target wheel attached to the crankshaft. The target wheel is equipped with slots situated 60 degrees apart. As the crankshaft rotates, the target wheel rotates past the crankshaft position sensor. The rising and falling edges created by the slots cause a signal to be sent back to the VCM. This signal occurs three times per crankshaft revolution and is referred to as the 3x signal for V6 applications. The signal occurs four times per crankshaft revolution and is referred to as the 4x signal for V8 applications.
The VCM then utilizes this 3x (V6) or 4x (V8) signal in order to provide the correct spark to the engine by way of the single coil driver module. The single coil driver module is basically an electronic switch that when commanded by the VCM, causes the primary coil voltage to breakdown, energizing the secondary coil and providing a spark via the coil wire to the distributor cap. The distributor consists of the following components:
The system consists of the following components:
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Vehicle control module (VCM)

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Distributor

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Ignition coil driver module

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Ignition coil

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Crankshaft position (CKP) sensor

Now which part do you want to replace ?

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Cap and rotor

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Camshaft position sensor

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Gear drive and shaft

The camshaft drives the distributor shaft which rotates providing a spark to the correct cylinder by way of the cap and rotor. The camshaft position (CMP) sensor functions much like the crankshaft sensor previously described but provides only a 1x signal to the VCM. That is, for every 2 rotations of the crankshaft, there is 1 rotation of the camshaft. Note that the camshaft position sensor will not affect driveability. The sole purpose of the camshaft position sensor is to provide the VCM with the necessary information for the misfire diagnostic trouble codes (DTCs).

crankshaft position sensor fault,
it is situated near the oil filter element,
connector has 3 wires,
two screws holding the sensor,
replace sensor

knock sensor is located near crankshaft pulley(lower engine assembly)

check camshaft sensor/crankshaft sensor

Did you measure the voltage while the black lead to the multimeter is connected to a known good ground? Is the key in the on position while you were doing the measurement? Remember that the PCM is a very reliable device, and only malfunction if abnormal situation is introduced so make sure you did the measurement properly, and make sure the connectors pin are tight. Most of the the problem is caused by loose connection at the connectors on the computer.

hi the speed control location is situated on each wheel with the abs unit on a trans axle its on the drivers side near to yhe top of the transmission please rate this answer hope this helps

I have replaced many of these. What I find works is a small flat screw driver. Pry under the sensor bodyand turn at the same time. That works for me

have you tried the crankshaft position sensor? situated near the flywheel on the gearbox housing???

A camshaft sensor can cause a no start situation, so can a bad coil, or ignition control modual. You need further testing done.
A speed sensor does not cause a no start, that I'm aware of.

yep there are connected. Change the crankshaft sensor and you wont have anymore problems. It will cost you +- 150 euros.