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 ENGINE CRANKS BUT WILL NOT START BELOW 40 (AIR BOX HEATER IS USED) — Continued 0012 00 DY 1. Remove engine harness plug (1) from air box heater harness jack (2). 2. Turn MASTER SWITCH to ON (see your -10). 3. Measure voltage between engine harness plug (1) pin A (3) to ground (4) and pin B (5) to ground (4) with air box heater switch depressed. 4. Turn MASTER SWITCH to OFF (see your -10). 5. Did multimeter read less than 17 volts with both readings? DYN 1. Replace air box heater wiring harness (WP 0181 00). 2. Verify no faults found. D2Y 1. Remove engine harness plug (1) from front main harness jack (2) at carrier bulkhead. 2. Turn MASTER SWITCH to ON (see your -10). 3. Measure voltage from front main harness jack (2) pin C (3) and ground with air box heater switch on. 4. Turn MASTER SWITCH to OFF (see your -10). 5. Did multimeter read less than 17 volts? D2YN 1. Faulty engine harness. Beyond unit maintenance repair. 2. Notify your supervisor. 0012 00-9