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AUTOMOTIVE MULTIMETER

INSTRUCTION MANUAL

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Содержание 6688D

Страница 1: ...AUTOMOTIVE MULTIMETER INSTRUCTION MANUAL...

Страница 2: ...ter if it has been damaged Do not use the test leads if the insulation is damaged or metal is exposed Use current clamps to measure circuits exceeding 20A Danger Avoid electrical shock do not touch th...

Страница 3: ...accuracy 18 or 28 Accessories One pair test leads single 9V battery NEDA 1604or IEC 6F22 operating instructions Fuse 0 8A 250V 5 20mm fast acting 20A 250V 6 30mm fast acting Dimension 218mm 122mm 75m...

Страница 4: ...VDC or RMS AC FREQUENCY Auto ranging Ranges 9 999kHz 99 99kHz 999 9kHz 9 999MHz Resolution 1Hz Accuracy 0 1 rdg 5dgts Sensitivity 1V Overload protection 250VDC or RMS AC CAPACITANCE Auto ranging Range...

Страница 5: ...ctions DC AC BUTTON Press this button to select the following functions DC AC Voltage Current Diode Continuity RANGE Stroke 4 2 DIS CYL TRIGGER BUTTON Press this button to select RPM 10RPM position ST...

Страница 6: ...in COM terminal red lead in V RPM terminal Touch the Black probe to the circuit coming from the power source Touch the Red probe to the circuit coming from the power source IMPORTANT voltage must be m...

Страница 7: ...acitor is discharge Select the CAP range with the rotary switch Insert Black lead in COM terminal Red lead in V RPM terminal NOTE Holding the probes with your hands may charge the capacitance in circu...

Страница 8: ...rk plug or move it to another plug wire if no reading or an erratic reading is received 9 Duty Cycle Select the Duty Cycle range with the rotary switch Insert Black lead in COM terminal Red lead in V...

Страница 9: ...uld de performed before testing individual components Electrical System Diagnostics It is important to diagnose a vehicle electrical problem thoroughly and efficiently The series of tests that follow...

Страница 10: ...ading of less than 12 4V indicates an undercharged battery Recharge before testing NO LOAD TEST Meter Reading Battery Charge 12 6V 100 12 4V 75 12 2V 50 12 0V 25 NOTE Leave the battery cable unhooked...

Страница 11: ...8V 30F 1 8 6V 20F 7 NOTE For each 10 above or below 10 add or subtract 0 2 volt Battery temperature can be checked with the meter temperature probe V ol ta g e D ro p T e st in g Rresistance What is i...

Страница 12: ...for 2 3 seconds The example shown has 2 connectors 1 wire 1 ground and 1 terminal to battery post A voltage drop of more than 0 5 volts would indicate a poor ground circuit Clean and inspect the batte...

Страница 13: ...the starter motor Disable the ignition so the engine doesn t start crank the engine for 2 3 seconds The example shown has 4 connectors and 2 wire and 2 solenoid connections A voltage drop of more than...

Страница 14: ...nator Connect the negative lead to the negative battery terminal Start the engine and hold a 1500RPM A reading of 13 1 15 5 volts is an acceptable Charging rate 3 Alternator Amperage A Output Battery...

Страница 15: ...the high tension terminal on the coil Connect the positive lead to the positive B terminal on the coil Typical measurements are between 6000 30000 s Consult the manufacturer s specifications for requ...

Страница 16: ...in any hall Effect sensor Ignition RPM Crankshaft etc Set the rotary switch to the Voltage V position INSERT Black lead in COM terminal Red lead in V RPM terminal Connect the Black test probe to the n...

Страница 17: ...of ground of codes described Current Codes are faults that are active Hard Failure causes the dash check engine light to remain ON Intermittent Failure causes the dash check engine light to flicker an...

Страница 18: ...r nozzle is closed This open to close time is the pulse width and is measured in milliseconds mS Typical Port fuel injectors TBI operate with a single ON to OFF electrical pulse Typical Port Throttle...

Страница 19: ...e sensor Connect the test probes to the signal line and to the ground refer to manufacturer s schematic Watch the display the Ohms reading should change as the signal arm on the potentiometer is moved...

Страница 20: ...The ON OFF signal in general will be in one of three configuration ON OFF only switch check for continuity with the switch in the ON and OFF position Pulse width fuel injector measure the ON time puls...

Страница 21: ...4 Meter reading do not change Hold feature is still toggled ON...

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