TM-9-2350-261-20-1 Unit Maintenance Manual Volume 1 M113A2 M577A2 M1064 M1068 M1059 M901A1 Download
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TM 9-2350-261-20-1 COOLANT HEATER MALFUNCTIONS — Continued 0070 00 DY 1. Remove heater control box (WP 0648 00). 2. Measure resistance between lead ends from circuit breaker terminal 17 (1) and ON/OFF/START switch terminal 15 (2) lead ends. 3. Does multimeter read 0 ohms? DYN 1. Repair faulty lead (WP 0312 00). 2. Verify no faults found. D2Y 1. Measure resistance between lead ends from ON/OFF/START switch terminals 21 (1) and 14 (2). 2. Does multimeter read 0 ohms? D2YN 1. Repair heater switch jumper lead between terminal 21 and 14 (WP 0312 00). 2. Verify no faults found. D3Y 1. Replace heater ON/OFF/START switch (WP 0648 00). 2. Verify no faults found. 0070 00-6