The camshaft position sensor (0232103006 or 406.3847050-10) is installed in the end of the cylinder head on the left side of the flywheel

The sensor is a semiconductor device based on the Hall effect

How to check the ZMZ-406 camshaft sensor

The sensor informs the control unit about the position of the TDC of the piston of the first cylinder during the compression stroke, which is necessary to comply with the fuel injection sequence according to the order of operation of the cylinders.

If the sensor or its circuits fail, the control unit turns on the KMSUd signaling lamp on the instrument panel, switches to standby mode with fuel supply to all cylinders simultaneously and stores a fault code in memory (see "diagnostics of the control system").

Turn off the ignition and disconnect the "negative" terminal of the battery.

How to check the ZMZ-406 camshaft sensor

How to check the ZMZ-406 camshaft sensor

Squeezing the spring clip, disconnect the pads of the phase sensor harness

How to check the ZMZ-406 camshaft sensor

How to check the ZMZ-406 camshaft sensor

Unclench the spring holder of the sensor wiring harness block and remove the block from it

How to check the ZMZ-406 camshaft sensor

Using the “10” key, we unscrew the bolt securing the camshaft position sensor to the cylinder head.

How to check the ZMZ-406 camshaft sensor

Remove the sensor.

The sensor is sealed with a rubber ring. A heavily compressed or deformed ring is replaced

Sensor test

How to check the ZMZ-406 camshaft sensor

In order not to short-circuit the sensor contacts, we put short pieces of a PVC tube of small diameter on the pins of its connector,

How to check the ZMZ-406 camshaft sensor

by inserting the bare ends of the wires into them, and the output of the resistor, we assemble the circuit

Scheme for checking the phase sensor: 1 - sensor; 2 - plug block; 3 - resistor 0.5-0.6 kOhm; 4 - LED AL307; 5 - metal plate

Camshaft position sensor test circuit

After making sure that the circuit is assembled correctly, we connect the wires to the battery terminals. In this case, the LED should light up and go out.

When moving a screwdriver blade near the end of the sensor, a working sensor should respond by briefly turning on the LED.

We replace the defective sensor.

Install the camshaft position sensor in reverse order.

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Procedure for disassembling and assembling carburetors K-151V, K-151E and K-151U Disassemble the carburetor in the following sequence:

Carburetor K-151V (Fig. 1) - vertical, emulsion, two-chamber, with a falling mixture flow and sequential opening of the throttle valves