TM-9-2350-261-20-1 Unit Maintenance Manual Volume 1 M113A2 M577A2 M1064 M1068 M1059 M901A1 Download
Page 372 of 1236
TM 9-2350-261-20-1 PERSONNEL HEATER MALFUNCTIONS — Continued 0069 00 B2Y 1. Remove rear main harness circuit 400 plug (1) from control box jack (2). 2. Measure voltage between rear main harness circuit 400 plug (1) pin and ground. 3. Does multimeter read 17 volts or more? B2YN 1. Repair rear main harness circuit 400 between master switch and heater control box (WP 0312 00). 2. Verify no faults found. B3Y 1. Remove heater control box (WP 0613 00). 2. Measure resistance between circuit breaker terminals 16 (1) and 17 (2). 3. Does multimeter read 0 ohms? B3YN 1. Replace heater circuit breaker (WP 0614 00). 2. Verify no faults found. 0069 00-4