TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
Page 267 of 890
WARNING TM 9-2320-280-20-1 ENGINE COOLING DISCONNECT NEGATIVE BATTERY CABLE BEFORE DISCONNECTING AND RECONNECTING PROTECTIVE CONTROL BOX HARNESS. There is battery voltage at the PCB at all times. Failure to disconnect battery cable will result in damage to equipment or injury to personnel. Replace PCB, refer to (para 4-5). 0-4500 OHMS STE/lCE-R TEST 91 1. Connect RED dip and BLACK clip to the terminations indicated in the question. RED to the first, BLACK to the second. 2. Start Teat 91,0-4500 ohms. 3. Displayed reading is in ohms. Leas than 5 ohms is continuity. If the resistance is over 4500 ohms, STE/ICE displays “9.9.9.9.” CONTINUITY (RESISTANCE) MULTIMETER 1. Set the voltmeter to an ohms scale of about 1000 ohms. 2. Connect the RED and BLACK leads to the connections stated in the question. 3. Be sure to read the correct scale. Leas than 5 ohms indicates continuity. For an open circuit, the meter should peg full scale (needle all the way to the left). 2-183