Aplicație de multimetru la detect motor electronic control sistem
(1) Cu excepția cazului în care altfel specificat în timpul testului procesului, indicator multimetre cannot be used to test computers and sensors. A high-impedance digital multimeter should be used. The internal resistance of the the multimeter should not be less than 1OKΩ.
(2) First check the condition of fuses, fusible wires and terminal blocks, and then use a multimeter to check after troubleshooting these places.
(3) Când măsurare tensiune, the contact switch should be turned on (ON) și baterie tensiune should not be lower than 11V.
(4) When using a multimeter to check a waterproof connector, you should carefully remove the leather cover. When inserting a test pen into the connector to check, do not apply excessive force to the terminal. During testing, the test leads can be inserted from the rear end with wiring or from the front end without wiring.
(5) Când măsurare rezistență, ușor agitare sârmă in the vertical and orizontal directions to improve accuracy.
(6) Când verificare pentru circuit rupere, tu ar trebui primul deconectarea conectorul între computerul și corespondentul senzorul, și apoi măsura rezistența între corespondent terminale of the conector la determina dacă acolo este a circuit rupere sau contact defecțiune.
(7) When checking the line for ground short circuit fault, the connectors at both ends of the line should be disassembled, and then the resistance value between the tested terminal of the connector and the vehicle body (ground) should be measured. If the resistance value is greater than 1MΩ, there is no fault.
(8) Înainte dezasamblare motor electronic control sistem circuit% 2c tu ar trebui primul tăiat oprit puterea alimentarea% 2c asta este % 2c turn oprit aprindere comutator (OFF)% 2c și scoateți cablajul pornit bateria stâlp.
(9) Simbolul al al terenului terminal on conectorul variază depinzând de de vehicul model. Vă rugăm referiți la the maintenance manual to identify it.
(10) Când măsurarea tensiunea între două borne sau două linii, the two test leads of the multimeter (voltage range) should be in contact with the two terminals or two wires being measured.
(11) Când măsura tensiunea a a a a linia, the positive test lead of the multimeter should be in contact with the terminal or line being measured; and the negative test lead of the multimeter should be in contact with the ground wire.
(12) Checking the continuity of terminals, contacts or wires refers to checking if if the terminals, contacts or wires are energized but not disconnected. You can check the resistance value by măsurare the resistance value of a multimetru.
(13) Când măsurare rezistență sau tensiune, the connector is general dezasamblat, thus divizing the connector into two parts. One part is called a sensor (or execution component) connector; the other part is called a sensor (or Actuator) wire harness connector or a sensor (or actuator) connector (or connector sleeve) on one side of the wire ham. Pentru exemplu, când tu elimină conector on an injector, unu parte is apelat the injector conector și celălalt parte este apelat the injector wire ham connector or the injector connector on one side of the wire. When măsurând, tu should figure out which part of connector it is.
(14) All sensors, relays and other devices are connected to the computer, and the computer is connected to the actuator through wires, so when checking for faults, tests can be effect on the corresponding terminals of the computer connector.
