TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 406 of 1205
TM 9-2320-387-24-l INSTRUMENTS CIRCUIT DIAGNOSTIC FLOWCHART - WINDSHIELD WIPERS OK POSSIBLE PROBLEMS ;T OPTIONS DISCONNECT WIRE 28A AT THE FUEL SENDING UNIT HARNESS. IS THERE CONTINUITY BETWEEN THE ENDS OF WIRE 28A AT THE FUEL GAUGE AND AT THE FUEL SENDING UNIT HARNESS? 1. STE/ICE-R TEST 91 (Page 2-508) 2. MULTIMETER REASON FOR QUESTION If the wire is OK, the sense line from the sending unit to the FUEL GAUGE OIL PRESSURE GAUGE TEMPERATUREGAUGE I gauge is OK. I I 1 it WINDSHIELD WIPERS OK 1 TEST OPTIONS IS THERE CONTINUITY BETWEEN WIRE 58C AT THE FUEL SENDING UNIT HARNESS AND BODY (OR ENGINE) GROUND? 1. STE/tCE-R TEST 91 (Page 2-508) 2. MULTIMETER REASON FOR QUESTION If the wire is OK, the sending un ground is OK. FUEL GAUGE OIL PRESSURE GAUGE TEMPERATURE GAUGE I I KNOWN INFO I ;T OPTIONS 1. STE/ICE-R TEST 91 (Page 2-508) 2. MULTIMETER WINDSHIELD WIPERS OK CHECK RESISTANCE ACROSS WIRE 28B & WIRE 58J AT THE FUEL SENDING UNIT HARNESS. IS THE RESISTANCE LESS THAN 50 OHMS? REASON FOR QUESTION If the fuel sending unit is OK, it could have been bad connections. POSSIBLE PROBLEMS 1 FUEL GAUGE OIL PRESSURE GAUGE TEMPERATURE GAUGE 2-352