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 CY 1. Remove heater harness plug (1) from heater control box jack (2). 2. Measure voltage between heater control box jack (2) pin C (3) and ground with HEATER SWITCH on START. 3. Does multimeter read at more than 17 volts? CYN GO TO DY (PAGE 0070 00-6) C2Y 1. Install heater harness plug on heater control box jack. 2. Remove heater harness plug (1) from heater jack (2). 3. Measure voltage between plug (1) pin C (3) and ground with HEATER SWITCH on START. 4. Does multimeter read at least 17 volts? C2YN 1. Faulty coolant heater harness. 2. Notify your supervisor. C3Y 1. Replace coolant heater (WP 0651 00). 2. Verify no faults found. 0070 00-5