1. Attach a control lamp or an ohmmeter to switch plugs. For this purpose disconnect cables from the switch.
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The switches screwed in the block of cylinders, as a rule, have no weight cable as connection with weight is carried out via the case. |
2. At the closed switch the device should give evidences. Best of all for this purpose to use an ohmmeter. At the closed switch the ohmmeter should show a zero Ohm at opened infinity Ohm.
3. Operability of sensors of a reserve of cooling liquid and brake liquid is most easier for checking as follows. At the included ignition disconnect from the switch a wire and put it to a reliable point of weight, for example to the block of cylinders. If the corresponding signaling device on dashboards, malfunction in the switch lights up.
4. The special case represents the sensor of the relay of pressure of oil. At the idle engine contact is closed (a signaling device burns). The switch works only at a certain pressure of oil.
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