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5-9-proverka-i-zamena-datchikov-zazhiganiya-sistema-motronic.html
5.9. Check and replacement of sensors ignitions (Motronic system)
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Some models are equipped with the VMT sensor established on a front of the engine. This sensor is intended for work with the block of testing of BMW and does not treat system of ignition of Motronic. |
Sensors of turns and situation
Check
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- Find two electric sockets of sensors. The socket of gray color (And) belongs to the situation sensor, and black (In) - to the sensor of turns.
Early models
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1 — the Cover of a head of cylinders |
Late models
- On each socket from the sensor check an ohmmeter resistance between contact 1 (a yellow wire) and contact 2 (a black wire). Resistance should be in limits from 860 to 1060 Ohm.
- Also check resistance between contact 3 and either contact 1, or 2. Resistance should make, about, 1000 Ohm.
- If indications wrong, replace the sensor (and).
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Replacement
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- Unscrew the screw (ы) sensor fastenings, having if necessary applied a prutkovy key, and separate the sensor (and) from sockets. Disconnect wires from sensors on one - be convinced that sockets at installation of new sensors are not mixed. On a coupling case the place under the sensor of situation is noted In (the gray socket), and under the sensor of turns - D (the black socket).
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When sensors are taken from sockets, it is expedient to check a ledge condition on a flywheel. Turn manually the engine that the ledge appeared under review. |
- Tighten carefully the screw (ы) fastenings of sensors, be thus attentive, that screws not to draw.
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Sensor of impulses (late models)
Check
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- Find two electric sockets of sensors. Disconnect from the forward sensor the socket.
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- Ohmmeter check on each socket from sensors resistance between contact 1 (a yellow wire) and contact 2 (black) wire. Resistance should make from 500 to 600 Ohm.
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- If indications wrong, replace the sensor.
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Replacement
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- Six-sided key of 5 mm unscrew a bolt of fastening of the sensor of impulses. The sensor of impulses (it is shown by an arrow) is located on a cover of a belt of a gazoraspredeleniye on the one hand a pulley (late models). Take the sensor from an arm and remove it.
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- At installation of the new sensor to observance of the correct distance between the end of the sensor and a rotor apply bronze щуп. The ledge of the sensor should be established at distance of 1.0 ± 0.3 mm from a sensor rotor.
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- Tighten a fastening bolt, being careful, that it not to draw.
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