TM-9-2540-207-14&P Sustainment Manual for A20 Heater for M113 2540-01-396-2826 Download
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TM 9-2540-207-14&P 6-12 6.5.13 C7 - FUEL PRESSURE SENSOR FAULT (Design Iteration 1 & 2 Only) FUEL PRESSURE SENSOR HAS FAILED CHECK/POSSIBLE CAUSE REF. REPAIR 1 CHECK THAT ELECTRICAL CONNECTOR IS ATTACHED TO FUEL PRESSURE SENSOR 5.5.1 RECONNECT FUEL PRESSURE SENSOR TO WIRING HARNESS RESTART HEATER 2 DEFECTIVE FUEL PRESSURE SENSOR 5.5.1 REPLACE FUEL PRESSURE SENSOR RESTART HEATER 3 DEFECTIVE ELECTRONIC PROGRAMMED CONTROLLER BOARD 5.2.5 REPLACE PROGRAMMED CONTROLLER RESTART HEATER 4 DEFECTIVE WIRING HARNESS 5.5.6 REPLACE WIRING HARNESS RESTART HEATER NOTE:IF A C7 FAULT OCCURS DURING RUN MODE (07 OR 14), THE HEATER WILL CONTINUE TO OPERATE AT REDUCED TEMPERATURE IF POSSIBLE, AND ALTERNATELY DISPLAY THE C7 CODE AND THE APPROPRIATE RUN MODE (07 OR 14) 6.5.14 C7 - FUEL PRESSURE SENSOR FAULT (Design Iteration 3 Only) FUEL PRESSURE SENSOR SIGNAL IS OUTSIDE NORMAL LIMITS; FUEL PRESSURE OVER 20 PSI, OR OPEN CIRCUIT CHECK/POSSIBLE CAUSE REF. REPAIR 1 CHECK FUEL PRESSURE SUPPLY TO THE HEATER IS BETWEEN 3 TO 15 PSI REDUCE FUEL SUPPLY PRESSURE RESTART HEATER 2 CHECK THAT ELECTRICAL CONNECTOR IS ATTACHED TO FUEL PRESSURE SENSOR 5.5.1 RECONNECT FUEL PRESSURE SENSOR TO WIRING HARNESS RESTART HEATER 3 CHECK WIRING HARNESS FOR CONTINUITY 5.5.6 CHECK 3 WIRES FROM TRANSDUCER PLUG P4 TO LOGIC BOARD PLUG P1; P4-PIN A TO P1-PIN17 P4-PIN B TO P1-PIN15 P4-PIN C TO P1-PIN16 IF ANY CHECK FAILS REPLACE WIRING HARNESS RESTART HEATER 4 DEFECTIVE FUEL PRESSURE SENSOR 5.5.1 REPLACE FUEL PRESSURE SENSOR RESTART HEATER 5 DEFECTIVE LOGIC BOARD 5.2.5 REPLACE LOGIC BOARD RESTART HEATER