Actron CP7674 Automobile Accessories User Manual
Contents
1. when working on your car You ll avoid the possibil ity of catching on moving parts or causing an electri cal short circuit which could shock or burn you VENTILATION The carbon monoxide in exhaust gas is highly toxic To avoid asphyxiation always operate vehicle in a well ventilated area If vehicle is in an enclosed area exhaust should be routed directly to the outside via leakproof exhaust hose SETTING THE BRAKE Make sure that yourcaris in Parkor Neutral and that the parking brake is firmly set NOTE Some vehicles have an automatic release on the parking brake when the gear shift lever is re moved from the PARK position This feature must be disabled when itis necessary for testing to have the parking brake engaged when in the DRIVE position Refer to your vehicle service manual for more infor mation HOT SURFACES Avoid contact with hot surfaces such as exhaust manifolds and pipes mufflers catalytic converters radiator and hoses Never remove the radiator cap while the engine is hot as escaping coolant under pressure may seriously burn you SMOKING AND OPEN FLAMES Never smoke while working on your car Gasoline vapor is highly flammable and the gas formed in a charging battery is explosive BATTERY Do not lay tools or equipment on the battery Accidentally grounding the HOT battery terminal can shock or burn you and damage wiring the battery or your tools and testers Be careful of contact with batt2. 48207 20770 Westwood Drive Strongsville OH 44136 216 572 0725 Toyota Motor Corporation Toyota Service Publications 750 W Victoria St Compton CA 90220 5538 CA residents 1 800 443 7656 Outside CA 1 800 622 2033 Ford Publications Dept Helm Incorporated Post Office Box 07150 Buick Detroit MI 48207 Tuar Company Post Office Box 354 Flint MI 48501 Honda Motor Co Ltd Helm Incorporated Post Office Box 07280 Detroit MI 48207 313 883 1430 AFTERMARKET VEHICLE SERVICE MANUALS Chilton Book Company Cordura Publications Motor s Auto Repair Chilton Way Mitchell Manuals Inc Manual Radnor PA 19089 Post Office Box 26260 Hearst Company San Diego CA 92126 250 W 55th Street New York NY 10019 DESCRIPTION AND SPECIFICATIONS DESCRIPTION The Digital Multitester is a compact hand held easy to use precision instrument which is compatible both with home electrical applica tions as well as the electrical systems used in modern passenger cars and trucks It may also be used to measure voltages in the computer control circuits of computer controlled vehicles SPECIFICATIONS Display 3 1 2 digit 5 inch LCD Liquid Crystal Display Automatic Polarity Sensing Display shows a minus sign on the DC Volts and Amps functions when lead hookup is reversed Zero adjustment Unit automatically zeroes on the Volts and Amps functions Overrange indication Left side of display shows either 1
3. or 1 when range in a function is exceeded Operating temperature 0 C 35 C 32 F 95 F 0 80 R H 35 C 50 C 95 F 122 F 0 70 R H Measurement rate 2 5 measurements per second nominal Power Nine 9 volt alkaline or carbon zinc battery Battery life Alkaline 200 hours typical Carbon zinc 100 hours typical Accessories Test leads pair instruction manual FUNCTIONS AND DISPLAY The analyzer provides the following functions and displays them as indicated OFF To preserve battery life always return the rotary switch to OFF when testing is complete Accuracies are reading No of digits at 23 C 5 C 75 F 3 F less than 75 R H AC Volts Accuracy 45Hz 450Hz eels 1 2 rdg 5dgts PC 750V 1V AC 750V Overvoltage Protection Resolution Input Impedance 450K DC Volts Overvoltage Resolution Accuracy Protection 100V DC 500V AC 350V 1mV 0 75 rdg 2 dgts 10mV DC 1100V 100mV AC 800V 1V Input Impedance 10mMQ DC Current Range Resolution 200pA 0 1pA Accuracy Voltage Burde 2000A 1pA 250mV rms Max 1 2 rdg 2 dgts 20mA 10yA 200mA 100A 2000mA 1mA 1 5 rdg 2 dgts 700mV rms Max Overload protection mA Input 2A 250V fuse DC10A Range Resolution Accuracy Voltage Burden 10A 100mA 1 5 rdg 3 dgts 300mV rms Max Ove
4. relative humidity 6 Turn the SELECTOR switch to the OFF position when testing is completed If the multitester will not be used for an extended period of time remove the internal nine 9 volt battery to avoid damage from leakage 7 Do not store the multitester in direct sunlight or in areas of high temperature or high humidity MEASUREMENT PROCEDURES 1 VOLTAGE MEASUREMENT a Set the SELECTOR switch to the required AC or DC voltage position b Plug the BLACK test lead into the COMmon input jack on the multitester c Plug the RED test lead into the Volts ohms milliAmps input jack on the multitester d Connect the test leads to the circuit under test observing proper polarity when measuring DC voltage e Read the result on the digital display If the display reads overrange 1 switch to a higher range within the appropriate AC or DC function 2 DC MILLIAMP MEASUREMENT a Set the SELECTOR switch to the required DC milliamp position b Plug the BLACK test lead into the COMmon input jack on the multitester c Plug the RED test lead into the Volts Q ohms milliAmps input jack on the multitester d Connect the test leads to the circuit under test observing proper polarity e Read the results on the digital display If the display reads overrange 1 switch to a higher range within the milliamps function 3 DC 10 AMPS MEASUREMENT a Set the SELECTOR switch to the 10 Amps position b Plug the BLACK test
5. CP7674 DIGITAL MULTITESTER INSTRUCTION MANUAL SAFETY GUIDELINES Your Digital Multitester is designed for both home and automotive use The following Safety Guidelines are provided when it is used for engine or vehicle testing To prevent accidents that could result in serious injury and or damage to your vehicle or test equipment carefully follow these safety rules and test procedures SAFETY EQUIPMENT Fire Extinguisher Never work on your car without having a suitable fire extinguisher handy A 5 Ibor larger CO or dry chemi cal unit specified for gasoline chemical electrical fires is recommended Fireproof Container Rags and flammable liquids should be stored only in fireproof closed metal containers A gasoline soaked rag should be allowed to dry thoroughly outdoors before being discarded Safety Goggles We recommend wearing safety goggles when work ing on your car to protect your eyes from battery acid gasoline and dust and dirt flying off moving engine parts NOTE Never look directly into the carburetor throat while the engine is cranking or running as sudden backfire can cause burns LOOSE CLOTHING AND LONG HAIR MOVING PARTS Be very careful not to get your hands hair or clothes near any moving parts such as fan blades belts and pulleys or throttle and transmission linkages Never wear neckties or loose clothing when working on your car JEWELRY Never wear wrist watches rings or other jewelry
6. USE REPLACEMENT All milliamp ranges of this miltitester are fuse protected Should you exceed 2 amperes of current flow in any of these ranges the fuse may open To maintain safe operation of the multitester replace it only with a 2 Amp 250 Volt 5mm x 20mm fast acting glass fuse Replace the fuse as follows 1 Turn the SELECTOR switch OFF 2 Remove the bottom case half 3 Remove the battery 4 Using a small blade screwdriver or other suitable tool gently pry the open fuse out of its holder 5 Install a new fuse 6 Re install the battery and bottom case half REPLACEMENT PARTS The following replacement parts are available for your multitester Consult your retailer or the manufacturer for assistance PART NUMBER DESCRIPTION 0002 2274 Instruction Manual 0044 0108 2 Amp 250 Volt Fuse 0038 1748 Black Test Lead Assembly 0038 1749 Red Test Lead Assembly SPX SERVICE SOLUTIONS
7. ery acid It can burn holes in your clothing and burn your skin or eyes When operating any testinstrumentfrom an auxiliary battery connect ajumper wire between the negative terminal of the auxiliary battery and ground on the vehicle under test When working in a garage or other enclosed area auxiliary battery should be located at least 18 inches above the floor to minimize the possibility of igniting gasoline vapors HIGH VOLTAGE High voltage 30 000 to 50 000 volts is present in the ignition coil distributor cap ignition wires and spark plugs When handling ignition wires while the engine is running use insulated pliers to avoid a shock While not lethal a shock may cause you to jerk involuntarily and hurt yourself JACK The jack supplied with the vehicle should be used only for changing wheels Never crawl under car or run engine while vehicle is on a jack VEHICLE SERVICE INFORMATION The following is a list of publishers who have service manuals for your specific vehicle Write or call them for availability and prices specifying the make style model year and VIN Vehicle Identification Number of your vehicle ORIGINAL EQUIPMENT MANUFACTURERS VEHICLE SERVICE MANUALS Oldsmobile Lansing Lithographers Post Office Box 23188 Lansing MI 48909 American Motors Cadillac Chevrolet Chrysler Corporation Pontiac Nissan North America Helm Incorporated Dyment Distribution Post Office Box 07130 Services Detroit MI
8. lead into the COMmon input jack on the multitester c Plug the RED test lead into the 10 Amps input jack on the multitester d Connect the test leads to the circuit under test observing proper polarity e Read the result on the digital display 4 RESISTANCE MEASUREMENT a Set the SELECTOR switch to the required resistance Q ohms position b Plug the BLACK test lead into the COMmon jack on the multitester c Plug the RED test lead into the Volts Q ohms milliAmps input jack on the multitester d Connect the test leads to the circuit under test e Read the result on the digital display If the display reads overrange 1 switch to a higher range within the resistance function 5 DIODE CHECK a Set the SELECTOR switch to the diode gt position b Plug the BLACK test lead into the COMmon input jack on the multitester c Plug the RED test lead into the Volts Q ohms milliAmps input jack on the multitester d Connect the test leads to the diode under test The diode must be removed from the circuit to achieve proper results e Read the result on the digital display f Reverse the test lead connections at the diode g Read the result on the digital display h A good diode will show a low reading with the test leads connected one way and infinity 1 with the test leads connected the other way The low reading will typically be some three digit number on the display The actual number is not critical F
9. rload protection unfused up to 10A for 15 seconds Resistance Max Open Resolution Accuracy Circuit Voltage 0 12 12 1 0 rdg 4 dgts Diode Check Use this test to check for open or shorted diodes A good diode will show a low reading with the test leads connected in one polarity and a high reading with the test leads connected in the other polarity The low reading will be typically some three digit number on the display for example 673 The actual number is not critical The high reading should be infinity 1 PRECAUTIONS AND PREPARATION FOR MEASUREMENT 1 Be sure that a fresh nine 9 volt battery is correctly installed in the multitester 2 Compare the position of the selector switch with the anticipated test result In the case of voltage or current measurement always select a range which is high enough to handle the worst case result Voltage or current may be higher than you expect 3 The BLACK test lead is always inserted in the COMmon jack on the multitester The RED test lead must be inserted in either the Volts Q ohms milliAmps jack or the 10 Amps jack depending on the test being performed Incorrect placement of the RED test lead may damage the multitester the circuit under test or both 4 The 10 Amp range on the multitester is not fused Exercise extreme caution 5 Operate the multitester only in temperatures between 0 C and 50 C 32 F 122 F and at 80 or less
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