DIAGNOSTIC TEST TOOLS

JUMPER WIRES n USED FOR TEST PURPOSES n ABOUT 6”, 12” 3 FT, AND 15 FT. n LARGE ENOUGH GAUGE n DIFFERENT TERMINAL ENDS n ALLIGATOR CLIPS

TEST LIGHTS n NON POWERED LIGHT –TELLS PRESENCE OF VOLTAGE –EASY AND QUICK TO USE –LOW INTERNAL IMPEDANCE n SELF POWERED LIGHT (CONTINUITY TESTER) –WORKS LIKE OHMMETER –LOW COST

DIGITAL VOLT- OHMMETER –10 MEG OHM IMPEDANCE –DIGITAL READOUT VERY PRECISE –MULTI-METER (MULTI-USES) –DIODE TESTER –AUDIBLE CONTINUITY TESTER –OVERRANGE INDICATOR

DVOM VOLTAGE TESTS –Power Switch –Polarity –Low battery –Hook across (parallel) device or circuit being tested –Adjust to most accurate range

DVOM AMPERAGE TESTS –Fuse Protection –Hook in series with circuit –Function selector adjust to most accurate range –Maximum amperage of meter –NOTE: DOUBLE CHECK YOUR CONNECTIONS BEFORE YOU DO TEST. CHECK YOUR SETUP!!

DVOM OHMMETER TESTS –Isolate component to be tested –fuse protected –Function selector to most accurate range –Start with highest range and turn down range until most accurate reading –Over-range indicator

TEST CONNECTIONS

Reading the DVOM Handout

LOGIC PROBE n TELLS PRESENCE OF VOLTAGE n TELLS PRESENCE OF GROUND (LOW VOLTAGE) n WILL NOT HURT COMPUTER CIRCUITS n LIGHT AND AUDIBLE TYPE

COMPUTER SCANNER n Retrieve Trouble Codes n Display Data Stream n Perform System Function Tests –Reset Instrumentation Lights –Operate Systems for Test Purposes –Adjustment of Engine Control Parameters

Later Dudes!