TM-9-2350-247-20-1 Unit Maintenance Manual Volume 1 M548A1 M548A3 Tracked Cargo Carrier Download
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TM 9-2350-247-20-1 M3 HEATER DOES NOT WORK (M548A3)—Continued 0104 00 CY 1. Turn NBC AIR FILTER SWITCH (1) OFF (see your -10). 2. Turn MASTER SWITCH OFF. 3. Disconnect NBC wiring harness connector P1 (2) from M3 heater wiring harness connector (3). 4. Turn MASTER SWITCH ON. 5. Turn NBC AIR FILTER SWITCH (1) ON (see your -10). 6. Measure voltage between any pin of NBC wiring harness connector P1 (2) except pin H and ground. 7. Does multimeter read 17 or more volts from more than one pin of NBC wiring harness connector P1 (2)? YES NO GO TO DY (PAGE 0104 00-5) 0104 00-3