Automotive Mutimeter ADD81/ADD91/ADD71 INSTRUCTION
Contents
1. oma E am C l W ses Nias y oy J OUTPUT tel MALE fuse Automotive Sensor Simulator And Tester Disable the ignition Crank the engine for 15 seconds Check the Min display A reading of less than 9 60V 70 indicates a weak battery Recharge replace before testing Voltage Load Test 20F 7 C NOTE e For each 10 F above or below 70 F add or subtract 0 2 volt Battery temperature can be checked with the meter temperature probe Resistance what is it Resistance is an opposing force created by a circuit or component to the flow of electrical current There is a small amount of natural resistance when voltage flows though wires switches grounds or connections The resistance increases beyond acceptable limits if corrosion 38 Automotive Sensor Simulator And Tester develops fittings become loose or wire fray Resistance Increases each time something such as wire a switch connections or the ground are added in the circuit Voltage Drop What is it Voltage drop is the difference in voltage potential when measured across a circuit or component creating resistance The resistance decreases the amount of voltage available The bulb will not light or the motor will not turn if the voltage is too low Maximum Voltage Drop Maximum voltage drop should not be more than 0 1 volt per wire ground connection switch or solenoid What should be tested Each wire ground2. 14 Automotive Sensor Simulator And Tester Hold Back light switch press it for 2 seconds till the white light on screen bright Date Hold The Date Hold feature stores the last reading in memory Press the HOLD button once to hold the present reading Press the HOLD button again to exit and resume readings Range switch is the same as 91 REL switch is the same as 91 CHARGE INDICATION LIGHT Function Range switch Turn this switch to select a function or turn the meter OFF Off power switch V AC DC voltage test CAP resistance diode sound capacitance test MA 10A AC DC test Hz Duty frequency duty test Ms pulse injection pulse test Rpm engine RPM test DWELL dwell of ignition system test C F temperature test 9V BATT CHARGE charge function 8 Testlead terminal The Black test lead COM is used in the Com terminal for all tests The red test lead 10A MA AND V 9 RPM is used to measure Amps or Volts Temperature Terminal K AND k insert the temperature probe in this terminal 9V CHARGE the jack of charger C Om ADD71 15 Automotive Sensor Simulator And Tester 1 Hz Duty switch is the same as 91 16 Automotive Sensor Simulator And Tester SELECT Hz switch Press the button to select a function A symbol will display to verify your choice when test or simulate frequency signal press hz duty switch key then enter into the mode of voltage adjusting 2 Hold Back lig
3. 61 Automotive Sensor Simulator And Tester Insert Black lead in COM terminal e Red lead in V 9 RPM terminal Connect the test probes in parallel Positive to the jumper wire negative to the engine ground e Set the Min Max feature on the meter e Vehicle engine must be running at operating temperature fast idle at 2000RPM for two minutes Voltage readings should move between 0 2 lean and 0 8 rich The average DC voltage should be around 0 50 5 Pressure sensor Test The electrical tests for pressure sensor such as the Manifold Absolute Pressure MAP and Barometric Pressure BARO vary greatly depending upon type and manufacturer consult the vehicle service manual for the schematic specifications and test procedures General Testing Procedures Note You cannot do a resistance 9 test for pressure sensors Analog Sensor An analog sensor can be tested with the same series of voltage V tests suggested for 3 wire potentiometer voltage tests In place of sweeping the sensor a vacuum pump is generally used to vary the pressure on the sensor In all cases refer to a vehicle service manual for the correct procedure Component Test Output 62 Automotive Sensor Simulator And Tester Output Devices The electrical tests for output devices vary greatly depending upon type and manufacturer Consult the vehicle service manual for the schematic specifications and test procedures Primary
4. 50 to 2000 F Resolution 1 C 1 F Accuracy 19erdg 2 C 19erdg 4 F Sensor type K thermocouple Input protection 60VDC or 24VAC rms DC voltage auto ranging Ranges 400mV Accuracy 0 8 rdg 10dgt Ranges 4V 40V 400V 1000V Accuracy 0 59erdg 5dgt Resolution 100uV input impedance gt 10M 9 Overload protection 1000VDC or 750VAC rms AC VOLTAGE Auto ranging Ranges 400Mv 4V 40V 400V 750V 400mV only in manual Resolution 100uV Accuracy 400mV 750V 1 8 rdg 10dgt at 50Hz to 100Hz 4V 40V 400V 1 5 rdg 10dgt at 50Hz to 400Hz Automotive Sensor Simulator And Tester input impedance 10M 9 Overload protection 1000VDC or 750VAC rms DC CURRENT Ranges 400uA 4000uA 40mA 400mA 10A Resolution 0 1uA Accuracy 400uA 4000uA 1 2 rdg 5dgt 40mA 400mA 1 5 rdg 5dgt 10A 2 0 rdg 1 Odgft Input protection 0 5A 250V fuse on 400mA range 10A 250V high energy fuses on 10A range AC CURRENT Ranges 400uA 4000uA 40mA 400mA 10A Resolution 0 1uA Frequency response 50Hz to 400Hz Accuracy 400uA 4000uA 1 8 rdg 5dgt 40mA 400mA 1 8 rdg 1 Odgt 10A x 2 59erdg 1 0dgt Input protection 0 5A 250V fuse on 400mA range 10A 250V high energy fuses on 10A range RESISTANCE Auto ranging Ranges 400 9 4K 2 40K 9 400K 2 4M Q 40M Q Accuracy 1 2 rdg 10dgts on 4002 range 1 0 rdg 5dgts on 4K2 to 4AMO ranges 2 59erdg 15dgts on 40M 9 ranges open circuit voltage 0 4V
5. Avoid measuring error form outside interference keep the meter away form spark plug or coil wires Avoid damaging the meter when testing voltage disconnect the test leads form the test points before changing functions Do not exceed the limits shown in the table below u Volts VORM 750V NAG rs rms DCVols Volts 1000V NAG S Ohm resistance resistance V Q RPM 250V AC DC SEN E AC DC 400mA mA J 400mA AC DC AC DC 10A 40A AC DC V Q RPM 250V AC DC Automotive Sensor Simulator And Tester Duty Cycle Dwell angle 10Amp measurement continuous for 15 seconds maximum Ohm can not be measured if voltage is present ohms can be measured only in a non powered circuit however the meter is protected to 250 volts SPECIFICATION GENERAL SPECIFICATION Display 3 3 4 digits LCD with 25mm high numerals Auto Functions Auto zero Auto polarity Auto range Auto power off 30 minutes after stopping the switch or no push button the meter enter to Power off mode Push button or run switch Auto Power off disable Low Battery Indication A Over range Indication OL Power Supply single 9V battery NEDA 1604or IEC 6F22 Reading Rate Time 3 reading per sec approx Maximum Common Mode Voltage 500Vdc or ac peak Safety Standards The meter is up to the standards Of IEC1010 Double Insulation Pollution degree 2 Over voltage Category Il Operating Environment OC to 50C 32F
6. Sa Insert o6c Black lead in COM terminal A Red lead in V o RPM E VEU PT terminal Connect one test probe to each end of the circuit to be tested circuit complete the meter will beep circuit open these is no beep and the display shows OL meter functions Diode check gt t IMPORTANT Turn the power off to the test circult D Tu Automotive Sensor Simulator And Tester Select the diode Check gt t setti ng with the rotary switch Insert Black lead in COM terminal Red lead in V Q RPM terminal Touch the Black test probe to the negative side of the diode Touch the Red test probes to the positive side of the diode Reverse the probes Black to the positive side and Red to the negative side NOTE A good diode will read low in one direction and high in the other direction when the probes are reversed or vice versa A defective diode will have the same reading in both directions or read between 1 0 to 3 6V in both directions BOs Automotive Sensor Simulator And Tester Meter functions Capacitance IMPORTANT turn the power OFF to the vehicle circuit to be tested Discharge the capacitor leads together Use the DC volts function to confirm that the capacitor is discharge Select the CAP range with the rotary switch Press SELECT button to select capacitance measurement CAP MUY mr Insert 1 mE Black lead in
7. V v aieo ae m COM terminal ES V MU Red lead in V Q RPM terminal NOTE Holding the probes witch your hands may charge the capacitance in circuit and generate a false reading Residual voltage charges on the capacitor Poor insulation resistance or poor dielectric absorption may cause measurement errors Meter functions temperature Temp u03 x Automotive Sensor Simulator And Tester IMPORTANT to avoid heat damage to the meter keep it away from sources of very high temperature The life of the temperature probe is also reduced when subjected to very high temperature operating range is 50 to 2 000 F Select the C or F Setting with the rotary switch Insert the temperature probe connector into the K and K socket Touch the end of the temperature sensor to the area or surface of the object to be measured Hz DUTY a 1 1 7 idum Dang zl Mosxgs i d MA ng iB M Vy atm Intaking I A l tempreture ae i 1 1 1 a T sensal Black Meter functions frequency Hz Select the frequency Hz setting with the rotary switch uu Automotive Sensor Simulator And Tester Insert Black lead in COM terminal Red lead in V Q RPM terminal Connect the Black test probe to ground Connect the Red test probe to signal out Wire of the sensor to be tested NOTE For frequencies below 1 Hz the display will show 0 000Hz Meter funct
8. or glazed drive belt Loose or faulty wires or connectors Defective alternator or regulator See 2 Alternator Voltage Output Loaded 2 Alternator Voltage Output loaded This test checks for alternator output voltage This test is necessary only if the vehicle failed 1 Battery test Set the rotary switch to the Voltage setting Connect the positive lead to the battery B output post on the back of the alternator Connect the negative lead to the negative battery terminal e Set the Min Max feature on the meter e Start the engine and hold a 1500RPM 45 Automotive Sensor Simulator And Tester A reading of 13 1 15 5 volts is an acceptable Charging rate 3 Alternator Amperage A Output Battery This test checks for alternator charging rate efficiency at the battery Connect currents Clamp RPM 100 option leads to the meter Connect the Current Clamp around the negative or positive battery cable Set the rotary switch to the Voltage setting NOTE 1mV 1Amp Mark sure all vehicle accessories are turned OFF e Start the engine and hold at 1500 RPM The Amperage reading should be 5 amps or better NOTE The current clamp measures amps in the direction of electrical flow Make sure the arrow on the clamp is pointed in the direction of the current flow in the cable Quick Test Place the clamp on the battery cable then turn the headlights o
9. Connect the Black test probe to ground iid Log zm Connect the Red test probe to the signal wire that connects to the component to be measured Meter functions Dwell Select the Dwell range with the rotary switch A Insert Black lead in COM ee I c terminal Red lead in V 9 RPM terminal Connect the Black test probe to ground Connect the Red test probe to the signal wire that connects to the breaker points Meter functions AC c om or DC current A amt m Select the 10A or ids k mA range with the a rotary switch Press the SELECT Automotive Sensor Simulator And Tester function button to select AC or DC Insert Black lead in COM terminal Red lead in the 10A or mA terminal IMPORTANT Turn OFF all power to the circuit Or disconnect the circuit i from the power source Connect the Red probe to the side of the circuit closest to the power source the Black probe to aE ul the side of the circuit to ground Turn the power ON and test NOTE Current must always be measured with the meter test probes connected in series as described Simulating function The simulating function of sensor With the unique sensor simulating function the instrument can simulate the input signal of sensor to substitute the work of sensor to judge stand or fall of sensor during the process of automotive diagnosis 28 Automotive Sensor Simulator And Teste
10. or 750V AC Use caution when measuring voltage above 25VAC or DC Circuit tested must be protested by a 10A fuse or circuit breaker e Donotuse the meter if it has been damaged e Do not use the test leas if the insulation is damaged or metal is exposed Use current clamps to measure circuits exceeding 104A Danger Avoid electrical shock do not touch the test leads tips or the circuit being tested e Do not try a voltage measurement with the test leads in the 10A or the mA terminal e When testing for the presence of voltage or current make sure the meter is function correctly take a reading of a known voltage or current before accepting a zero reading Choose the proper range and function for the measurement do not try voltage or current measurements that may exceed the ratings marked on the function range switch or terminal e When measuring current Connect the meter in series with the load Never connect more than one set of test leads to the Automotive Sensor Simulator And Tester meter e Disconnect the live test lead before disconnecting the common test lead e The mA and the 10A terminals are protected by fuse to avoid possible injury or damage use only in circuits limited to 400mA or 10A continuous for 15 seconds See also Fuse Replacement IMPORTANT To maintain accuracy of the meter replace the discharged battery immediately when the battery symbol appears on the meter display
11. sensor pressure sensors Primary output devices actuators are a form of an electromagnet ar i that is either Ex nm ON or OFF F OO Lin rgd The ON OFF gone ag signal in general will be in one of three configurations ON of OFF only switch e Pulse width in a specified length of time fuel injector e Duty cycle measured in percent of high or low time or dwell degrees mixture control solenoid 55 Automotive Sensor Simulator And Tester Duty Cycle What is it Hz DUTY SELICT HIE RPR NSAT Ww rfe WA mi Duty cycle is the percentage 96 of time a voltage is positive compared to negative ON compared to OFF For example duty cycle measurements are used for Mixture control solenoids The amount of ON time is measured as a percent of the total ON OFF cycle The meter can read the negative or positive 4 slope and display it as a percent 96 of the total cycle re Frequency Hz What is it Frequency is the number of times a voltage pattern repeats positive compared to negative ON compared to OFF during one 1 second of time For example frequency Hz 56 Automotive Sensor Simulator And Tester measurements are specified for digitally controlled manifold Absolute Pressure sensors The frequency of the ON OFF ui mom signals per second are O SS measured and TA 9 9 i displayed Frequency Hz is shown as Analog A continuo
12. sensor e Start the engine e Set the Min Max feature on the meter The voltage should change as the temperature changes This is the signal that is sent to the computer for processing Refer to the manufacturer s specifications If the voltage change is not within specifications look for sources of resistance due to poor connectors connections or breaks in the wiring S9 Automotive Sensor Simulator And Tester 3 Potentiometers Variable Resistance 3 wire Tests The potentiometer is a variable resistor The signal it generates is used by the vehicle computer to determine position and direction of movement of a device within the component Resistance e Set the rotary switch to the Resistance Q setting Disconnect the sensor Connect the test probes to the signal line and to the ground refer to manufacturer s schematic Set the Min Max feature on the meter Watch the bar graph display the Ohms reading should change as the signal arm on the potentiometer is moved signal sweep Typical potentiometer applications are Throttle position Sensor TPS Exhaust Gas Recirculation valve position Sensor EVP e Vane Flow Meter VAF Potentiometers Variable Resistance 3 wire Tests Reference Voltage Test Disconnect the vehicle wiring harness at the sensor Select the Voltage range with the rotary switch Insert Black lead in COM terminal e Red lead in V 9 RPM terminal Connect the test probes
13. 1 40 Automotive Sensor Simulator And Tester Connect the positive lead to the point on the fender fire wall or vehicle frame where the accessory ground is fastened Connect the negative lead to the negative battery terminal e Set the Min Max on the meter Turn all of the accessories ON bright lights A C fan high rear window defroster windshield wipers etc Disable the ignition so the engine doesn t start Crank the engine for 2 3 seconds The example shown has 2 connectors 1 wire 1ground 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 battery cable connections and the ground test again 3 Battery Power to Starter Solenoid This test checks battery source efficiency to the starter solenoid e Set the rotary switch to Voltage Establish the base voltage that you will compare test voltage against see base voltage Volt Drop Test 1 Connect the positive lead to the positive battery xd us Automotive Sensor Simulator And Tester terminal Connect the negative lead to the positive terminal on the starter solenoid e Set the Min Max feature on the meter e Disable the ignition so the engine doesn t start Crank the engine for 2 3 seconds The example shown has 2 connectors and 1 wire a voltage drop of more than 0 3 volts would indicate a poor groun
14. Automotive Mutimeter ADD81 ADD91 ADD71 INSTRUCTION MANUAL BEIJING ADD TECH CO LTD Automotive Sensor Simulator And Tester DANGER erns E T 3 Bigger E 4 SEAS O cometa i d ERE RUIN RAI AIRE 5 IMPORTANT c ER 5 OPEGIFIGATIOD 5 tite eb bnt nieve e ctis 6 GENERAL SPEGIFIOATION eiecit RA 6 ElecticalisDpecl 6 allofiS sss i v Ihe ER NER EN EUE 7 Pulse width Only ADD91 ADD891 sene 7 Dwell angle Only ADD91 ADD81 eese 8 Temperature Only ADD91 ADD81 ssses 8 DO CURRENT osea one hath dtu adn 9 AG CURRENT soient EDD 9 DIODE TEST oir c Udo US EUR 10 AUDIBLE GON TINY steitttstt etiain tS Itb eot ent 10 Signal analog Output Analog Frequency Duty Voltage Signal Qu ORY ADDON sic ou i i tre ep n eU aiU 10 Signal analog Output Analog Frequency Duty DC and AC Voltage RESISTANCE Signal Output Only ADD71 10 2e Lurig SLAM oed a aenn eta AAO O A 11 Range Selee sus mieten a a mire eee 12 Range mdi NET RET 12 AUTO Power Off Disable 0 coc ccccccccssecceessseceessseeeeeaes 18 migiiiBl cr p 19 Meter TUNGIONS uoa e eee ee 19 Sqmubating TOUnCi ON 28 The simulating function of sensor 28 Basic Diagnostic Testing oec tto te ttai ied tined 32 Electrical System Diagnostics eeeseees
15. Automotive Sensor Simulator And Tester the mew reading is the same as the reference value The display will be zero 6 Square Wave Output Hz Duty Voltage Parameter are changeable when simulate the signal rotate these buttons respectlively can change the Hz and duty and voltage value 7 Safety protector 8 Function Range switch Turn this switch to select a function or turn the meter OFF Off power switch V DC AC voltage test CAP resistance diode sound capacitance test MA C10A AC DC test Hz Duty frequency duty test Ms pulse injection pulse test Rpm engine RPM test DWELL dwell of ignition system test OUTPUT simulate OUTPUT C F temperature test 9 Test lead terminal The Black test lead COM is used in the Com terminal for all tests The red test lead 10A MA AND V 9 RPM is used to measure Amps or Volts Temperature Terminal K AND k insert the temperature probe in this terminal t OUTPUT The simulating signal OUTPUT jack du Automotive Sensor Simulator And Tester ADDe1 HziDUTY CHARGE S dg 2 SELECT HOLD RPMIDISHz V 25e RANGE REL 5 ms PULSE RPM CHARGE i y 10A mA K COM VIQURPM K A AQ 4 Q9 104155B MAX NUTS AC ax ourpur FUSE ono DC 400m MAX _ FUSED A AN A 1 Hz Duty switch the switch key test for frequency and duty 2 RPM DIS switch when test RPM the choosing key of cylinder of engine
16. DC overload protections 250VDC or RMS AC FERQUENCY Auto ranging Ranges 100Hz 1 KHz 100 KHz 200 KHz Resolution 0 01Hz Automotive Sensor Simulator And Tester Accuracy 0 1 rdg 5dgts Sensitivity 1V Overload protection 250VDC or RMS AC CAPACITANCE Auto ranging Ranges 40nF 400nF 4uF 40uF 100uF Resolution 10pF Accuracy 2 5 rdg 10dgts on 40nF range 1 5 rdg 10dgts on 400nF to 4uF ranges 2 5 rdg 15dgts on 40uF to100uF ranges Overload protection 250VDC or RMS AC DIODE TEST Test current 0 6mA typical Resolution 1mV Accuracy 2 5 rdg 2gdis Open circuit voltage 3 0Vdc typical Overload protection 250VDC or RMS AC AUDIBLE CONTINUITY Open circuit voltage 0 4Vdc lt 60 2 Buzzer sounds Overload protections n 250VDC or RMS AC Signal analog Output Analog Frequency Duty Voltage Signal Output Only ADD91 FREQUENCY 20Hz 4 KHz Duty cycle 1096 9096 VOLTAGE 0 5V Signal analog Output Analog Frequency Duty DC and AC Voltage RESISTANCE Signal Output Only ADD71 FREQUENCY 20Hz 3 KHz Duty cycle 1096 9096 10 Automotive Sensor Simulator And Tester DC VOLTAGE 0 1V 0 5V 0 12V AC VOLTAGE 0 5V 0 12V RESISTANCE 0 5K 2 0 200K 9 RESISTANCE analog Output Only ADD71 RESISTANCE 5K 0 200K Getting Started This chapter will help you get started It describes the basic functions of the meter Front Panel ADD91 6 al amp D 5 8 COM V O RPM K4 m
17. a s LL em Jla Grae J 1 BAL ee NIC US j my A A 1 Hz Duty switch when test or simulate frequency signal button hz duty and select hz duty function She Automotive Sensor Simulator And Tester 2 select RPM DIS Hz switch Press the button to select a function A symbol will display to verify your choice When test RPM choose the cylinder of engine when simulate the frequency signal botton RPM DIS Hz key then enter into the mode of voltage adjusting 3 Hold Back light switch press it for 2 seconds till the white light on the screen bright Date Hold The Date Hold feature stores the last reading in memory Press the HOLD button once to hold the present reading Press the HOLD button again to exit and resume readings 4 Range switch Range select The range is automatically selected by the meter But you can also manually select arrange within a function by pressing the RANGE button Range Exit To exit the RANGE mode and return to auto ranging press and hold the RANGE button for 2 seconds 5 REL switch REL function Press the zero REL function button to zero the display and store the reading as a reference value Press and hold the button for two 2 seconds to exit this mode In the REL mode the value displayed is always the difference between the stored value and the present reading for example if the reference value is 24 00V and the present reading is 12 50V the display will indicate 11 50V if p
18. ble SHOOllig sob bb Enn M Et Dein Rae 64 ADD91 ADD81 ADD71 Automotive Sensor Simulator And Tester 33 4 AUTOMOTIVE DIGITAL ULTIMETER AUTOMOTIVE SENSOR SIMULATOR AND TESTER OPERATION MANUAL This instrument is a compact battery operated handheld with safety protector streamline 3 3 4 digital automotive engine analyzer multimeter for measuring DC AC Voltage DC AC Current Resistance Capacitance Frequency and Duty cycle Temperature Diode Continuity test Rachometer Dwell ms PULSE AnalogFrequency Duty Voltage Resistance Signal Output It is an ideal instrument for automotive diagnostic Safety DANGER Engines produce carbon monoxide which is odorless causes slower reaction time and can lead to serious injury when the engine is operating keep service areas WELL VENTILATED or attach the vehicle exhaust system to the shop exhaust removal system e Set the parking brake and block the wheels before testing or repairing the vehicle it is especially important to block the wheels on front wheel drive vehicles The parking brake dose not hold the drive wheels Wear an eye shield when testing or repairing vehicles exceeding the limits of this meter is dangerous it wil expose you to serious or possibly fatal injury carefully read and understand the cautions and the specification limits of this meter Automotive Sensor Simulator And Tester Voltage between any terminal and ground must not exceed 1000V DC
19. connection switch solenoid and the complete circuit should be tested Each connection point is a potential source of increased resistance Voltage Drop Testing 1 Negative Engine Ground This test checks for engine ground efficiency e Set the rotary switch to Voltage Touch the positive lead to the positive battery post and the negative lead to the negative battery post Note the reading this will be the base voltage to compare your test voltage reading against Connect the positive lead to a clean spot on the engine 39 Automotive Sensor Simulator And Tester block Connect the negative lead to the negative battery post e Set the Min Max feature on the meter Disable the ignition so the engine doesn t start Crank the engine 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 battery cable connections test and the ground test again Important Repeat this test when the engine is thoroughly warmed up Heat expansion of metal may cause resistance to increase SS 2 Negative Chassis Ground ire m This test checks for chassis Traa uu N em ground efficiency l e Set the rotary switch to Voltage 6 2 i O e Establish the base voltage that you will compare test voltage against see base voltage Volt Drop Test
20. ctronic control system Start up engine according to the numerical value of simulating signal which needed to change If the fault of automotive disappear obviously that means fault exist in sensor The simulating function of frequency signal The application can simulate frequency signal with 0 5bV and 10Hz 40k Operation 1 Acquire the standard numerical value of frequency sensor which needed to simulate from maintaining manual of original factory 2 Switch off the ignition power and disconnect the electronic connector tip Insert the black lead into the OUTPUT socket of the application put its another end to the ground using the crocodile clip insert the red lead 30 Automotive Sensor Simulator And Tester into the OUTPUT socket connect its another end with the input signal of sensor can use multi test leads Turn the rotary switch in either direction to select a simulating function of signal OUTPUT Select the HZ DUTY into Duty Cycle range with the rotary switch Turn the duty cycle adjusting button to 0000 meanwhile the frequency should be 0000 accordingly Caution adjust duty system firstly then adjust frequency If Not knowing the standard numerical value of detailed duty system you need adjust the duty cycle to 50 Set the rotary switch to Voltage Adjust the numerical value of voltage to standard data prescribed by maintenance manual 5v Hint survey the signal changing of se
21. d circuit Clean and inspect the battery cables and cable connections test again I 1 Important Repeat this test when the engine is thoroughly warmed up Heat expansion of metal may cause resistance to increase 4 Battery Power to Complete Starter Circuit This test checks battery power efficiency to the starter through the starter solenoid e Set the rotary switch to Voltage Establish the base voltage that you will compare test voltage against see base voltage Volt Drop Test 1 Connect the positive lead to the positive battery terminal x25 Automotive Sensor Simulator And Tester Connect the negative lead the positive terminal on the starter motor e Set the Min Max on the meter 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 0 8 volts would indicate a poor ground circuit Clean and inspect the battery and starter cables solenoid and cable connections test again Note A defective starter solenoid may cause an excessive voltage drop check the cables and connections before replacing the solenoid Starter Motor Testing 1 Starter Current The battery tests and the voltage drop tests have verified that there is adequate battery voltage at the starter Next check for excessive starter motor current draw Connect a cu
22. e Radiators Transmission Heaters e A C Condensers e A C Evaporators Engine Coolant Sensors Air Temperature Sensors 2 Thermistor Variable Resistance 2 wire Tests Thermistors are variable resistors that are sensitive to temperature level changes As the temperature changes the thermistor s resistance value changes Select the Ohms 9 range the rotary switch Connect the test probes to the sensor terminals The Ohms reading should match the temperature of the sensor see manufacturer s specifications Typical thermistor applications are e Engine Coolant Temp ECT Air Charge Temp ACT 58 Automotive Sensor Simulator And Tester e Manifold Air Temp MAT Vane Air Temp VAT Throttle Body Temp TBT Voltage Presence Disconnect the vehicle wiring harness at the sensor Select the Voltage range with the rotary switch Insert Black lead in COM terminal e Red lead in V 9 RPM terminal Connect the test probes in parallel positive to the circuit coming from the power source negative to the negative circuit from the sensor e Turn the ignition switch ON do not start 10 the engine Measurement should be 5 9 volts check the manufacture s specifications Voltage Change Connect jumper wires between the connector and the sensor Connect the test probes in parallel Positive to the circuit coming from the power source negative to the Negative circuit from the
23. e within a function by pressing by pressing the range button Always select a range higher than you expect the current or voltage to be Then select a lower range if better accuracy is needed if the range is too high the readings are less accurate if the range is too low the meter shows OL over limit Push button Functions Alternate Function The altemate function button is SELECT Press it to toggle to the alternate Function AC audible and capacitance shown in blue on the meter face AUTO Power Off Disable To disable the automatic power off function hold down the SELECT button while turning the meter switch form OFF to ON 18 Automotive Sensor Simulator And Tester Temperature C F The temperature feature will display the data in degrees Celsius C or Fahrenheit F ee Also Meter Functions Duty Cycle Ms Pulse Duty Cycle what is it RPM DIS In the RPM function the meter defaults to RPM 1 for conventional 4 cycle engines Press the RPM DIS button to toggle to RPM 1 for 2 cycle engines or waste spark DIS 4 cycle engines Meter functions Meter functions voltage V The meter will automatically select the best voltage V range Press SELECT button to select AC or DC Insert black lead in COM terminal red lead in V 2 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 sou
24. fuse one at a time until the excessive draw is located Also check the non fused applications such as head lights computer relays and capacitors in the instrument panel Reconnect the battery cable for the next test NOTE Leave the battery cable unhooked and proceed to the test on the following page 3 Battery Test Parasitic Load This is for excessive parasitic drain on the battery Turn the ignition switch and all accessories OFF IMPORTANT Do not start the vehicle during this test meter damage may result Set the rotary switch to 10A e Insert the positive lead into the 10A meter terminal Disconnect the battery positive cable Connect the positive lead to the positive battery 36 Automotive Sensor Simulator And Tester terminal Connect the negative lead to the Disconnect positive battery terminal e Set the Min Max feature on the meter 4 Battery Test Load This tests the battery s capacity to deliver sufficient cranking voltage e Set the rotary switch to Voltage Connect the positive lead to positive battery terminal Connect the negative lead to negative battery terminal e Set the Min Max feature on the meter HzDUTY HE Output Duty tage C JIi L A 1 d SELECT pen D RPH 7 V 25e TT HL T 43 T3 Pd ma PULSE RPM i m 8 RPM odii aeee en eU A CTL A fon TC Ae f N OUTPUT I dee Jb
25. g conditions and the surrounding environment to the vehicle computer 2 Engine Control Module a vehicle computer that processes the information supplied by the sensors then sends an electronic command to the appropriate components actuators 3 Actuators these are output devices that may be electrical mechanical or vacuum components controlled by the vehicle computer Typical Sensors TPS RPM Barometric Oxygen Sensor Sensor Vehicle Lo p Computer Elevato r Ignition i Exhaust Gas Canister Torque Mechan ical Coolant Vacuum Sensor Sensor Spark Recalculating Purge Converter Fuel Advanc Valve Clutch injecti e on Typical Actuators Basic Diagnostics for the computer Controlled Engine There are two important steps that must always be followed 3532 Automotive Sensor Simulator And Tester when diagnosing and repairing vehicles with computer controls e Do basic engine diagnostics first Many problems can be traced to lack of routine maintenance on components such as plug wires filters and spark plugs Also check for vacuum leaks on any vehicle new or old A completes engine diagnosis should precede any electrical system diagnostics Follow the published diagnostic Charts Exactly through every step to mark a repair on computer component Self Diagnostic Computer Systems One of the functions of the vehicle computer is to record fault codes produced when a sensor or actuator fails The
26. ht switch is the same as 91 Date Hold The Date Hold feature stores the last reading in memory Press the HOLD button once to hold the present reading Press the HOLD button again to exit and resume readings 3 RESISTANCE HZ DUTY V ADJUST Square Wave Output Hz Duty Voltage Parameter are changeable when simulate the signal rotate these buttons respectlively and change the Hz and duty and voltage value SIMULATOR Signal output control switch button the switch can control the simulating signal OUTPUT and NO OUTPUT Function Range switch Turn this switch to select a function or turn the meter OFF Off power switch V AC DC voltage test CAP resistance diode sound capacitance test MA 10A AC DC test Hz Duty frequency duty test 5k 200k resistance simulating function DC OUTPUT DC voltage simulating OUTPUT function Output frequency signal OUTPUT function CHARGE charge function 4 WY VY 5 ie Automotive Sensor Simulator And Tester 6 Test lead terminal The Black test lead COM is used in the Com terminal for all tests The red test lead 10A MA AND V 9 RPM is used to measure Amps or Volts Temperature Terminal K AND k insert the temperature probe in this terminal t OUTPUT the OUTPUT jack of simulating signal 9V CHARGE the jack of charger Cal 9v the collating function of resistance value NOTE The range is automatically selected by the meter But you can also select a rang
27. il Connect the positive lead to the positive B terminal on the coil ele measurements are between 6000 30000 s Consult Sirnea the manufacturer s specifications o 9T for required resistance measurements 3 Secondary Ignition Wire 48 Automotive Sensor Simulator And Tester Resistance Test Q This test checks for open circuits or high resistance in the secondary sparkplug wires IMPORTANT Twist and bend the sparkplug wire while measuring the resistance for this test e Set the rotary switch to the Resistance 9 setting INSERT e Black lead in COM terminal Red lead in V 9 RPM terminal Connect the test probes to opposite ends of the sparkplug wire e Set the Min Max feature the meter Typical measurements are approximately 1 000 2 s per inch of wire For example 10 inch cable 10 000 4 Distributor Cap Rotor Resistance Test 9 This test checks for open circuits or high Resistance in the distributor cap and rotor e Set the rotary switch to the Resistance Q INSERT Black lead in COM terminal 49 Automotive Sensor Simulator And Tester Red lead in V 9 RPM terminal Dist Cap Center Connector Test Connect the test probes to opposite ends of the distributor cap terminal see illustration In general resistance 9 should be 5k 10k Refer to the manufacturer s specifications Rotor Test Connect the test probes to opposite ends of the rotor co
28. in parallel Positive to the computer reference voltage circuit 60 Automotive Sensor Simulator And Tester negative to the negative system ground circuit from the sensor Turn the ignition switch ON do not start the engine Watch the bar graph display Reading should be 5 9 volts check the manufacturer s specifications Potentiometers Variable Resistance 3 wire Tests Voltage Change Connect jumper wires between the connector and the sensor Connect the test probe in parallel Positive to the signal line negative to the ground circuit e Turn the ignition key ON do not start the engine e Set the Min Max feature on the meter Observe the bar graph display The voltage drop should change as the position of the signal arm on the potentiometer moves signal sweep Refer to the manufacturer s specifications If the voltage change is not within specifications look for sources of resistance due to poor connectors connections or breaks in the wiring 4 Oxygen Sensor 02 Test The Oxygen sensor samples the amount of Oxygen in the exhaust stream The voltage produced by the 02 sensor is a direct ratio to the oxygen level in the exhaust stream this voltage is used by the computer to change the air fuel mixture This test will check oxygen sensor signal output levels Disconnect the vehicle wiring harness at the sensor Install a jumper wire e Select the voltage range with the rotary switch
29. ions RPM X10RPM Select the RPM range with the rotary switch OR select the X10RPM range with rotary switch 4 000 to 12 000RPM Multiply the displayed reading times ten to get urn rou actual RPM PP e i Insert the induction pick up connecting terminal into the Automotive Sensor Simulator And Tester meter Ground lead in COM terminal output lead in V o RPM terminal Connect the inductive pick up to a spark plug wire if no reading is received unhook the clamp turn it over and connect again Press the RPM button to toggle between RPM 1 for 2 cycle Distributor less ignitions system DIS or RPM 2 for 4 Cycle engines NOTE Position the inductive pick up as far away from the distributor and the exhaust manifold as possible Position the inductive pick up to within six inches of the spark plug or move it to another plug wire if no reading or an erratic reading is received Meter functions Duty Cycle 96 Select the Duty Cycle range with the rotary switch Insert Black lead in COM o terminal m o m Red lead in V o RPM Sarit ag terminal a M WA Connect the Black test probe to ground E M Se Connect the Red test O ew une O probe to the signal Automotive Sensor Simulator And Tester wire circuit Meter function ms pulse Select the ms pulse range with the rotary switch Insert Black lead in COM terminal Red lead in V o RPM terminal
30. m These tests should 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 check primary areas that are responsible for the majority of the electrical problems found in an automobile perform these basic tests even if a vehicle has a trouble code set in the computer A component malfunction detected by the computer can be caused by a basic ground problem in the electrical system Simply replacing a failed component will not fix the problem if a poor ground caused the component failure The tests begin by checking the main source of power and the chassis ground circuit connections Ground circuits are one of the least understood but potentially most troublesome areas of automotive electronics An excessive voltage ground x2 Automotive Sensor Simulator And Tester in a circuit effects the entire electrical circuit This is why it is important to make sure the basic circuits are in good shape before checking trouble codes and components Battery Testing 1 Battery Test surface Discharge NOTE Remove the positive and negative battery cables and thoroughly clean the cable terminals and the battery posts Reassemble and begin testing The ignition switch must be OFF to prevent damaging the vehicle computer when connecting or disconnecting battery cables This test checks for a lo
31. n If the reading is not negative disconnect the clamp turn it over and reconnect 46 Automotive Sensor Simulator And Tester Ignition System Tests 1 Ignition Coil Primary Resistance Test for checking primary winding sistance MPORTANT Test the ignition coil cold and hot e Set the rotary switch to the Resistance Q setting INSERT e Black lead in COM terminal Red lead in V 9 RPM terminal Disconnect the coil from the vehicle wiring harness NOTE The resistance in the meter leads must be subtracted to get an accurate measurement at the 0 50 2 0 range Short the leads together and press the ZERO A Button The meter will automatically subtract the resistance in the leads Connect the negative lead to the negative terminal on the coil xd Automotive Sensor Simulator And Tester Connect the positive lead to the positive B terminal on the coil Typical measurements are between0 50 2 0 Q s consult the manufacturers specifications for required resistance measurements 2 Ignition Coil Secondary Resistance Test 9 This test checks secondary winding resistance IMPURTANT Test the ignition coil cold and hot e Set the rotary switch to the Resistance 9 setting INSERT e Black lead in COM terminal e Red lead in V O RPM terminal Disconnect the coil from the vehicle wiring harness Connect the negative lead to the high tension terminal on the co
32. nsor by learning the data stream of scanner yaja Automotive Sensor Simulator And Tester Turn on the ignition switch without starting up engine Change the numerical value of simulating signal of sensor then survey if the data of sensor is consistent with simulating signal through data stream of scanner If consistent that means no fault in electronic control system Start up engine according to the numerical value of simulating signal which needed to change If the fault of automotive disappear obviously that means fault exist in sensor MAINTENANCE 1 The multimeter is a precision electronic device Do not tamper with the circuitry to avoid damage A Never connect a source of voltage under the condition of resistance measurement B Never operate the meter unless the cover is in place and fully closed C Battery replacement should be done after the test leads have been disconnected and POWER IS OFF 2 Turn off the power if the meter is not in use removed the battery if the meter will be free for long period 3 If a sign ES appear on the display open the compartment cover remove the spent battery and replace it with a battery of the same type 4 Contact with the maintenance service center of our company if you have trouble Basic Diagnostic Testing This chapter leads you through a systematic series of tests i00 Automotive Sensor Simulator And Tester that check the vehicle electrical syste
33. ntacts see illustration In general resistance should be 0 1 2 or less Refer to the Manufacture s specifications 5 Pick up Coil Resistance 9 Voltage Test V The Resistance test checks for open circuits or high resistance The Voltage test compares voltage output to resistance Test Procedure e Set the rotary switch to the Resistance Q INSERT Black lead in COM terminal Red lead in V 9 RPM terminal Connect the test probes to the pick up coil lead see illus 50 Automotive Sensor Simulator And Tester Resistance Specifications The majority of the pick up coils will test between 500 1500 Q s resistance See manufacture s specification for required range e Set rotary switch to volts Press the Blue Alternate Function button to select AC Crank engine 10 15 seconds at normal speed measure voltage Resistance Test Voltage Output Resistance 29 on a good pickup coil will match AC output voltage Ex 950 2 s 950mV output Resistance can be good but voltage low if the magnet has lost magnetism or if the reflector is too far from the stator Airgap 6 Hall Effect Sensor Voltage Test V This test checks for switching action in any hall Effect sensor Ignition RPM Crankshaft etc e Set the rotary switch to the Voltage V position INSERT Black lead in COM terminal Red lead in V 9 RPM terminal e Set the Min Max feature on the meter Connect the Black
34. oting 1 Meter will not turn ON Check the battery contacts for a tight fit Check for a minimum battery voltage of 8 0 volts Mark sure the battery wire are not pinched in the cafe 2 Ampere reading is erratic or there is no reading at all Disassemble the meter back cover and test the fuses for continuity 3 Meter reading is erratic Printed circuit board contaminated from handling with hands Low battery Open circuit in a test lead frayed or broken wire e Wrong range selected For frequencies below 1Hz the display will show 00 00Hz Blown fuse 4 Meter reading do not change e Hold feature is still toggled ON 64
35. output devices actuators are from of an electromagnet that is either ON OFF The ON OFF signal in general will be in one of three configurations ON OFF only switch check for continuity with the switch in the ON and OFF position Pulse width fuel injector measure the ON time pulse Duty cycle Mixture Control Solenoid measure the percent of high or low time in a duty cycle In most cases the low time is the on time Maintenance Fuse and Battery Replacement WARNING Avoid electrical shock Remove test leads before opening case Do not operate the meter or rotate the meter switch when the case is open 1 To replace a battery or fuse loose the three screws in the case back and remove the case by lifting up and forward Replace the battery with an 9 volt alkaline battery 2 To replace fuse firmly grasp the printed circuit board PC boards by the edges and lift up and out of the case IMPORTANT To prevent contamination of the circuits your hands must be clean and the printed circuit board must be help by the edges Replace the fuse with the same type of fuse 20A is a F20A 500V high energy fast acting fuse 263 Automotive Sensor Simulator And Tester mAis a F500mA 250v high energy fast acting fuse Mark sure the replacement fuse is centered in the fuse holder 3 Carefully re insert the PC boards into the case Re assemble the case then fasten the three screws Trouble Sho
36. r A D D 91 operation The simulating function of voltage signal The application can simulate voltage signal within 0 5V such as the signals of TPS oxygen sensor operation l Acquire the standard numerical value of sensor which need to be simulated by learning maintenance manual of original manufactory 2 Switch off the ignition power and disconnect electronic connector tip 3 Insert the black lead into the OUTPUT socket of the instrument put its another end to the ground using the crocodile clip insert the red lead into the OUTPUT socket connect its another end with the input signal of sensor can use multi test leads 4 Turn the rotary switch in either direction to select a simulating function of signal OUTPUT 5 Select the HZ DUTY into Duty Cycle range with the rotary switch Turn the duty cycle adjusting button to 0000 meanwhile the frequency should be 0000 accordingly 6 Setthe rotary switch to Voltage Adjust the numerical 29 Automotive Sensor Simulator And Tester value of voltage to standard data prescribed by maintenance manual Hint survey the signal changing of sensor according function of data stream of decoder 7 Turn on the ignition switch without starting up engine 8 Change the numerical value of simulating signal of sensor then survey if the data of sensor is consistent with simulating signal through data stream of scanner If consistent that means there is no fault in ele
37. rce IMPORTANT voltage must be measured in parallel red 9 Automotive Sensor Simulator And Tester probe measuring circuit from power source Accuracy Selection of a lower range will move the decimal point one place and increase the accuracy of the reading An OL Over limit display means the range is too low select the next higher range Meter Functions Resistance 9 IMPORTANT if you are testing an application that has capacitors in the circuit be sure to turn the power OFF on the test circuit and discharge all capacitors Accurate measurement is not possible if external or residual voltage is present Select the resistance 9 setting with the rotary switch Select the resistance Q range with the button labeled RANGE if a more accurate measurement is desired D ERIT Insert O Black lead in COM Im E terminal Wem T Red lead in V 2 RPM c sg terminal NOTE The resistance in the Im test leads can affect amp accuracy at the 400 a range Short the leads together and press the REL button to automatically subtract the lead resistance form the resistance xz Automotive Sensor Simulator And Tester measurements Touch the test lead probes across the resistor to be tested Meter Function Audible Continuity 3 IMPORTANT Turn the power OFF on the test circuit Select the Audible continuity Drange with the rotary switch Press SELECT button to select Audible continuity
38. rrent clamp around the negative or positive 4 battery cable Set the rotary switch to the 400mV setting NOTE 1mV 1Amp e Set the Min Max feature on the meter the Min reading will xd Automotive Sensor Simulator And Tester be the negative current draw Disable the ignition so the engine doesn t start Crank the engine for 2 3 seconds NOTE The current clamp measures amps in the direction of electrical flow Make sure the arrow on the clamp is pointed in the direction of the current flow in the cable Quick Test Turn the ignition and all accessories OFF Place the clamp on the battery cable then turn the headlights on If the reading is not negative disconnect the clamp turn it over and reconnect Approximate Average Draw 4Cyl 150 180 Amp Maximum 6 8Cyl Under 300 180 210 Amp CID Maximum 6 8Cyl Over 300 CID 250 Amp Maximum Charging System Tests 1 Battery This test checks for alternator output voltage at the battery e Set the rotary switch to Voltage Connect the positive lead to the positive battery terminal Connect the negative lead to the negative battery AA Automotive Sensor Simulator And Tester terminal e Set the Min Max feature on the meter Mark sure all vehicle accessories are turned OFF e Start the engine and hold at 1500RPM A reading of 13 1 15 5 volts is an acceptable charging rate If the voltage is low check for Loose cracked
39. se 33 Automotive Sensor Simulator And Tester Battery Testing e 34 NO LOAD TEST Im 35 VOllade LOAA TEST oem EAREN Tq 38 Resistance Wal IS i oo ec e A 38 Voltage Drop What is It oo cccccccsssccceesseeceessseeeeeaes 39 Voltage Drop TeSting ccc ccccssccccsssseccessseecesssseeeesssseeeeseaes 39 Stater Motor Test rr RR ER RENE RE ERR IRUS 43 UII Tesco du ENEMIES EM ee 44 Approximate Average DEW nascente in Nero os dequo Hoa pu e doo ae 44 Charging System Tests e oo Rb COR RR ase 44 IGNITION System Tesis seta ceca dta dabat ins 47 lest PIOCOOUIO oio o ee Da iom 50 Resistance Specifications cece ccccsssccesssscceessseceessseeeeens 51 Resistance Test Voltage Output eeesessse 51 B si Diagnostic Testing see e eR HE REN WETO 52 Computer Controlled Systems 0 0 0 ccc ecesccessseeeesseeeeneees 52 Basic Diagnostics for the computer sssss 53 Failure STO e MR T 54 Gormpohehb TESNO sop PEOR RNRIS QE RETIA REI 55 Duty Gvole What Is i Y eade ior Sb n Ree roe as 56 Frequency Hz What is it sseesseseeeeee 56 Voltage CHANGES easi idest tu i tees on Ota toe iint ins 61 General Testing Procedures esses 62 Analog SENSO ssec ma pue UM EE 62 Maintenance Fuse and Battery Replacement 63 Trou
40. se failures are usually displayed as a Current Code or as an Intermittent Failures Be aware however that some vehicle manufacturers use different terminology and older vehicles do not have all of ground of codes described Current Codes are faults that are active Hard Failure causes the dash check engine light to remain ON e Intermittent Failure causes the dash check engine light to flicker and then go OFF after a short period of time Generally the trouble code stays in the computer memory History Codes are stored codes for faults that have occurred in the past Failure Codes When a failure is detected be the computer it stores the information in the form of Fault Codes also known as Trouble Codes or Service Codes These Fault Codes are usually a two or three digit number that identifies the electrical circuit affected Once these codes have been S4 Automotive Sensor Simulator And Tester read the vehicle repair can be stares Be sure to closely follow the vehicle service manual diagnostic procedures repairs and specifications Component Testing Component testing with a meter generally requires detailed schematics and specifications that are provided by the manufacture The following section provides general information for the main groups of sensors input devices and actuators output devices The primary input devices sensors are Temperature sensors 2 wire devices 3 wire devices Oxygen
41. test probe to the negative post on the battery E Automotive Sensor Simulator And Tester Turn the ignition key ON Touch the Red test probe to the three test point shown Ground reading should be the same voltage as the ground Computer or battery e Supply line reading should be the same voltage as the input source Computer or battery e Signal line reading should be 0 or the same voltage as the input source Computer or battery The reading will toggle high and low as the shutter rotates Basic Diagnostic Testing This chapter describes a computer controlled sensor and actuator system typically Found on today s automobile Test procedures are also provided for the basic ground of electrical input and output components commonly found in a computer controlled automotive system The test procedures are due to the complexity of components general theory tests Be sure to consult the vehicle service manual for component schematics and test specifications Computer Controlled Systems A need for better fuel economy and lower emissions resulted in today s automobiles utilizing computer controlled functions that were previously activated by mechanical Electrical and vacuum devices Computerized vehicle control systems are made up of three basic component groups These groups are 1 Sensors they are input devices that supply information A om Automotive Sensor Simulator And Tester about engine operatin
42. to 122F at lt 70 relative humidity Storage Environment 20 C to 60C AF to 140F at lt 80 relative humidity Automotive Sensor Simulator And Tester Temperature Coefficient 0 1 X specified accuracy C x 18 C 0P 28 C Accessories One pair test leads single 9V battery NEDA 1604or IEC 6F22 operating instructions Fuse 0 5A 250V 5x20mm fast acting 10A 250V 5x20mm or 5x25mm fast acting Dimension 155mm Xx 97mm x 50mm Weight Approx 320g including battery and holster Electrical specifications Accuracy is given as of reading number of leads significant digits at 18 C to 28 C 65F to 83 F with relative humidity up to 7096 RPM Tach Only ADD91 ADD81 Ranges 600 4000 4000 12000 X 10RPM Resolution 1 RPM Effect reading gt 600RPM Accuracy 2 59erdg 1 Odgt Overload protection 250VDC or RMS AC Pulse width Only ADD91 ADD81 Ranges 0 1ms 10 0ms Accuracy 2 5964 0 2ms Overload protection 250VDC or RMS AC Duty cycle Ranges 0 0 90 0 Resolution 0 1 Pulse width gt 100us lt 100ms Accuracy 2 59erdg 1 Odgt Automotive Sensor Simulator And Tester Overload protection 250VDC or RMS AC Dwell angle Only ADD91 ADD81 No of cylinder 4 5 6 8 Range 0 90 0 4 CYL 0 720 5CYL 0 60 0 6CYL 0 45 0 8CYL Resolution 0 1 Accuracy 2 59erdg 1 Odgt Overload protection 250VDC or RMS AC Temperature Only ADD91 ADD81 Ranges 50 to 1100 C
43. us positive to negative cycle or Digital A positive to negative ON to OFF cycle Ssi a aes Pulse Width What is it Pulse width is the length of time an actuator is energized For example fuel injectors are activated by an electronic pulse from the engine control module This pulse generates a magnetic field that pulls the injector nozzle valve open The pulse ends and the injector 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 Body injectors TBI operate with an ON to HOLD to OFF electrical pulse This method creates a double electrical spike An oscilloscope is required to measure this type of pulse Component Tests input 1 Temperature Tests ST Automotive Sensor Simulator And Tester Many components that regulate temperature can be tested be measuring the surface temperature of the area surrounding the component Connect the temperature probe to the meter Set the rotary switch to the Temperature position e Set the Min Max feature on the meter Touch the end of the temperature probe directly to the surface of the component to be tested Compare your readings with the manufactures Specifications The temperature should be within 3 10 F 5 of the data stream Values Some of the components that can be tested for Temperature variation ar
44. w current discharge across the battery case Set the rotary switch to voltage connect the negative lead to the negative battery post Set the Min Max feature on the meter Touch the positive lead to the battery case around the positive battery post Do HEDUTY Talal Soe not touch the post cape a A reading of more than 0 5V a S m indicates excessive surface G i discharge Dirt moisture and corrosion are a cause of surface discharge clean the battery Automotive Sensor Simulator And Tester with a baking soda and water solution do not allow the solution to get into the battery 2 Static Battery Test No Load HDUTY Dad I This test checks for E battery change state Turn the headlights on for 15 seconds to dissipate battery surface charge IMPORTANT The ignition switch must be OFF when connecting or disconnecting battery cables to prevent damaging the vehicle computer Disconnect the negative battery terminal Set the rotary switch to voltage Connect the positive lead to the positive battery post Connect the negative lead to the negative battery post A reading of less than 12 4V indicates an undercharged battery Recharge before testing NO LOAD TEST Meter Reading Battery Charge 12 6V 10096 35 Automotive Sensor Simulator And Tester Parasitic draw should not exceed 100mA If there excessive draw remove the circuit
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