TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
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TM 9-2320-361-24-1 0018 00 0018 00-25 SIMPLIFIED TEST EQUIPMENT FOR INTERNAL COMBUSTION ENGINE— REPROGRAMMABLE STE/ICE-R NO-GO CHAIN TROUBLESHOOTING (Contd) Table 2. STE/ICE-R No-Go Chain Test (Contd). BATTERY TESTS (Contd) NG81 TK MODE • Turn off vehicle electrical power. • Dial 90 into TEST SELECT switches. • Press and hold TEST until CAL message appears on display. • Release TEST. • Wait for offset value to appear. • Is offset value within limits of –225 to +225. • Proceed to TM 9-4910-571-12&P for offset fault isolation. TEST PROCEDURE 1. Test each battery of a series pair,then proceed to batteries of next series pair. 2. To find series pair of batteries, find pairs for which the negative terminal of one battery is connected by a cable to the positive terminal of another battery.This makes the two batteries a series pair. For example, in figure below, batteries A and B are a series pair , and batteries C and D are also a series pair. 3. To test battery A or B, clamp current probe around cable connecting battery A and battery B. Point arrow on current probe in direction of negative post connected to the cable. 4. The test probe cable W2 is first connected to battery A for testing battery A. 5. The test probe cable W2 is then connected to battery B for testing battery B. (Current probe in same place as for testing battery A). 6. To test battery C or D, clamp current probe around cable connecting battery C and battery D. Point arrow on current probe in direction of negative post connected to cable. 7. Connect test probe cable W2 to battery C to test battery C. 8. Connect test probe cable W2 to battery D to test battery D. YES NO PROMPTING MESSAGE • Proceed to step 3. 3 CURRENT PROBE TK 11 & TRANSDUCER CABLE W4 TEST PROBE CABLE W2 RED A BLACK B C D