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Mercedes S-Class W-140In 1991-1999 editionsRepair and enterprise of the car |
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Mercedes S-Class + Mercedes Benz cars of the class S (W-140) + operation manual + Routine maintenance + motor + cooling systems, heating + Systems of power supply and edition - Electric equipment of the motor - Systems of ignition and management of the motor - the general information Checks of tax system ignition and injections Search of defects - the general information and preliminary checks Check and regulation of a corner of Zuvorkommens of ignition Spark plugs Self-diagnostics of control systems of the pipe OBD Diagnostics of electronic system of the automatic conditioner of air (kilowatt) Application of an oscillograph for observation of signals of tax system Ignition coils - a device detail Removal, device and regulation of a sensor of provision of a wave of curve (CMP) The distributor of ignition (M119.97 motors) - a device detail + systems of freight and start + gear shifting boxes + Awtomatitscheckaja transmission + connection + brake system + Aufhängung and management + body + electric onboard equipment |
Checks of tax system ignition and injections General information Components of system of ignition are very sure. Defects are connected with unreliability or pollution of contacts, as a rule. Breaches of high-voltage lines arise because of pollution, humidity or damage of isolation, and not because of defect of components of system mostly. Before pulling the conclusion about defect of some component, check its line.To check operability of the high-voltage line, from a candle it is accepted and the surfaces of the motor it is brought closer (existence of a spark observing), it is forbidden. They risk not only to receive current rush, but also to damage, the control unit or the coil of ignition. If the motor works unstably, never accept tops of lines of candles for definition incorrectly. The described low checks need to be filled it is necessary if defect (the refusal of a starter, admissions of ignition is obvious, among other things). Several defects are less obvious and cannot be shown therefore that tax system the motor switched in the mode of sure functioning. A similar floor of defect explosions, etc. are shown in increase in costs of fuel, instability of changes of idling, loss of the power. If you found similar symptoms, address on 100. The motor is not started
If the proworatschiwajetsja motor at the appendix of a starter or proworatschiwajetsja very slowly, you do not check a starter and the battery. Connect the voltmeter in clips of the battery and measure effort at starter motor proworatschiwanii kolenwala. Do not accept a starter more, than on 10 seconds. If the voltmeter 9.5 shows In less, are convinced of serviceability of the battery, a starter and system of shop. If at the appendix of a starter the motor with a usual speed rotates, but is not started, check all components of high voltage of system of ignition. To instructions of the producer following, you attach a stroboscope and prowernite kolenwal of the motor of a starter. If the lamp on stroboscopes ignites, the effort to spark plugs works. Are convinced of serviceability of candles. If the lamp does not light up, check high-voltage lines (watch chapter Routine maintenance). If candles or lines (a spark are serviceable), follow recommendations which are provided in office search of defectsof - general information and preliminary checks. If there is no spark, are convinced of serviceability of the coil of ignition (you replace or a roll of a film on consciously regularly you check or resistance of parcels). If defect is not spread, look for them on other place. If after compensation of a roll of a film the motor began, - defect to be started is spread. They do not hurry to throw out a roll of a film and to buy new. Are convinced of reliability of the entry of the line to a film roll (the motor could be started because of contact okisliwschegossja). If to be as it should be it is a film roll, it is wrong, possible, the powerful cascade of transfer of the buffer which is a control unit component the motor, one of sensors of tax system the motor or to the accompanying knots. In this case it has to be written down in memory of the control unit of a code of defect which can be considered on memory. It is possible to consider Kodes of defects by means of the special equipment. Admissions of ignition The reason of documents of ignition is mostly unreliable contact of the line with clips of the coil of ignition or some sensor.Will leave ignition and are convinced of reliability of the introduction of all plugs of system of ignition. Check high-voltage lines. Are convinced that they of course are strengthened in points of mezhduukrepleniye do not adjoin to metal parts of the motor. If the line concerns metal and isolation is damaged at it, then there will be no spark on a candle in operating time of the motor and to be served on weight. At detection even of insignificant damage of isolation even if lines you replace all offer. To themselves convince of full operability of lines it can do, they on consciously regularly over time it is replaced. At compensation of lines you change them after one. From this you will avoid risk of wrong accession. Do not damage the line at the device. If high-voltage lines are completely serviceable, the reason of emergence of documents of ignition of all probability after the coil of ignition or some spark plug. Put the new offer of candles (firmly watch chapter Routine maintenance) or check a film roll (watch office check and regulation of a corner of Zuvorkommens of ignition). The cause of documents of ignition can be a wrong or dirty sensor of situation kolenwala (watch office system of power supply and an injection of the combustible petrol engine - the general information of the head of system of power supply and the edition. If check of above-mentioned knots did not lead to improvement of operation of the motor, consider Kodes of defects on memory of the control unit. |
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