Actron SunPro CP7678 Operating Instructions Manual

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Actron SunPro CP7678 Operating Instructions Manual Manual pdf 13 page image

250V MAX15A MAXFUSEDCOMDC15A20M200K20K2K 200 8CYL6CYL TACHX105CYL4CYL8CYLOHMS15A250V MAX15A MAXFUSEDDC15A20M200K20K2K 200 8CYL6CYL TACHX105CYL4CYL8CYLOHMS15ACOM13Section 2. Automotive TestingThe digital multimeter is a very useful tool fortrouble-shooting automotive electrical sys-tems. This section describes how to use thedigital multimeter to test the starting and charg-ing system, ignition system, fuel system, andengine sensors. The digital multimeter canalso be used for general testing of fuses,switches, solenoids, and relays.General TestingThe digital multimeter can be used to testfuses, switches, solenoids, and relays.Testing FusesThis test checks to see if a fuse is blown. Youcan use this test to check the internal 15Afuse inside the digital multimeter.• If you hear tone - Fuse is good.• If you don’t hear tone - Fuse is blownand needs to be replaced.NOTE: Always replace blown fuses withsame type and rating.Testing SwitchesThis test checks to see if a switch “Opens” and“Closes” properly.Fig. 16Red BlackTypical "Push"Button SwitchTo test Switches (see Fig. 16):1. Insert BLACK test lead into COM testlead jack.2. Insert RED test lead into testlead jack.3. Turn multimeter rotary switch to200 function.4. Touch RED and BLACK test leads to-gether to test continuity.Listen for tone to verify proper operation.5. Connect BLACK test lead to one side ofswitch.6. Connect RED test lead to other side ofswitch.Listen for tone:• If you hear tone - The switch is closed.• If you don’t hear tone - The switch isopen.7. Operate switch.Listen for tone:To test Fuses (see Fig. 15):1. Insert BLACK test lead into COM testlead jack.2. Insert RED test lead into testlead jack.3. Turn multimeter rotary switch to200 function.4. Touch RED and BLACK test leads to-gether to test continuity.Listen for tone to verify proper operation.5. Connect RED and BLACK test leads toopposite ends of fuse.Listen for tone:Fig. 15Red BlackFuse