TM-9-2350-277-20-1 Unit Maintenance Manual Volume 1 M113A3 M577A3 M1064A3 M1068A3 M58 Download
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TM 9-2350-277-20-1 0086 00 CY 1. Remove harness 10942956 plug (1) from heater control box jack (2). 2. Measure voltage between heater control box jack (2), pin C (3), and ground, with HEATER switchon START. 3. Does multimeter read 17 volts or more? YES NO GO TO DY (PAGE 0086 00-7) C2Y 1. Install harness 10942956 plug on heater control box jack. 2. Remove harness 10942956 plug (1) from heater jack (2). 3. Measure voltage between harness 10942956 plug (1), pin C (3), and ground, with HEATER switchon START. 4. Does multimeter read 17 volts or more? YES NO C2YN 1. Replace heater wiring harness. 2. Verify no faults found. C3Y 1. Replace heater (WP 0703 00 or WP 0704 00). 2. Verify no faults found. 0086 00-6 PERSONNEL HEATER MALFUNCTIONS—Continued Change 1