TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
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TM 9-2320-280-20-1 REFERENCE INFORMATION Change 1 2-279 Don't forget that your vehicle batteries are disconnected, so you can't run the STE/ICE-R from the DCA, you have to use the power cable and connect directly to the batteries. When the resistance is too high for STE/ICE-R to measure, as in the case of an open circuit, STE/ICE-R displays “9.9.9.9.” Check the wires at the connectors for shorts. If there are no visible shorts, you have to replace the harness. 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. Less than 5 ohms indicates continuity. For an open circuit, the meter should peg full scale (needle all the way to the left). STARTER CIRCUIT Repair wiring or replace harness, refer to (para. 4-85). Repair wiring or replace harness, refer to (para. 4-85). Replace starter, refer to (para. 4-8). A B C D E F G H PCB/DISTRIBUTION BOX BODY CONNECTOR 0-4500 OHMS STE/ICE-R TEST 91 1. Connect RED clip and BLACK clip to the indicated test points in the question. RED to the first, BLACK to the second. 2. Start Test 91, 0-4500 ohms. 3. Displayed reading is in ohms. Less than 5 ohms is continuity. If the resistance is over 4500 ohms, STE/ICE displays “9.9.9.9.”