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 VEHICLE COMPARTMENT HEATER MALFUNCTIONS — Continued 0085 00 2BY 1. Remove main harness circuit 400 plug (1) from control box jack (2). 2. Measure voltage between main harness circuit 400 plug (1) pin and ground. 3. Does multimeter read 17 volts or more? 2BYN 1. Repair main harness circuit 400 between master switch and heater control box (WP 0294 00). 2. Verify no faults found. 3BY 1. Remove heater control box (WP 0431 00). 2. Measure resistance between circuit breaker terminals 16 (1) and 17 (2). 3. Does multimeter read 0 ohms? 3BYN 1. Replace heater circuit breaker (WP 0472 00). 2. Verify no faults found. 0085 00-4 Change 1