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4.0 DISCLAIMERS, SAFETY, 4.1 DISCLAIMERS All information, illustrations, and specifications contained in this manual are based on the latest 4.2 SAFETY 4.2.1 TECHNICIAN SAFETY INFORMATION WARNING: ENGINES PRODUCE CARBON Set the parking brake and block the wheels before testing or repairing the vehicle. It is especially When servicing a vehicle, always wear eye pro- tection, and remove any metal jewelry such as When diagnosing a chassis problem, it is impor- tant to follow approved procedures where applica- 4.2.2 VEHICLE PREPARATION FOR Make sure the vehicle being tested has a fully charged battery. If it does not, false diagnostic codes 4.2.3 SERVICING SUB-ASSEMBLIES Some components of the chassis system are in- tended to be serviced as an assembly only. Attempt- 4.2.4 DRBIII T SAFETY INFORMATION WARNING: EXCEEDING THE LIMITS OF THE T MULTIMETER IS DANGEROUS. IT CAN EXPOSE YOU TO SERIOUS OR POSSIBLY FATAL INJURY. CAREFULLY READ AND UNDERSTAND THE CAUTIONS • Follow the vehicle manufacturer’s service speci- • Do not use the DRBIII t if it has been damaged. • Do not use the test leads if the insulation is • To avoid electrical shock, do not touch the test • Choose the proper range and functions for the • Do not exceed the limits shown in the table below: FUNCTION INPUT LIMIT Volts 0 - 500 peak volts AC Ohms (resistance)* 0 -1.12 megohms Frequency Measured 0 - 10 kHz Temperature -58 - 1100°F * Ohms cannot be measured if voltage is present. Ohms can be measured only in a non-powered • Voltage between any terminal and ground must • Use caution when measuring voltage above 25v • Use the low current shunt to measure circuits up • When testing for the presence of voltage or cur- • When measuring current, connect the meter in • Disconnect the live test lead before disconnecting • When using the meter function, keep the t away from spark plug or coil wires to avoid measuring error from outside interference. 5 GENERAL INFORMATION |