17.7. Switches - check
1. Switches are checked by an ohmmeter with use of the enclosed schematic diagram. Schemes of check of switches of turns / a sound signal and the fan of the heater/conditioner are represented in enclosed drawings.
2. It is simplest to check pairs of normally closed or normally opened contacts of the switch (for example the switch of a signal of the hand brake). For this purpose find according to the scheme the necessary switch, disconnect wires and connect to switch conclusions an ohmmeter (tester). Transfer the switch to the situation "incl." and "off" and watch a device arrow. On normally closed contacts of the shooter should deviate, and when switching to return to former situation. On normally opened contacts the return picture should be observed.
3. For check of multicontact switches it is necessary to use the enclosed chart (photo). Number of a conclusion of the socket of the switch, and across - position of the switch is down specified. Conclusions between which should be the closed chain, are specified by circles and connected by continuous line. Keep in mind that position of the switch of lighting has 3 provisions - And, In and Page. And - the top situation, In - bottom and With - to pull in the arrow direction.