TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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TM Q-2320-387-24-1 FUEL SYSTEM DIAGNOSTIC FLOWCHART KNOWN INFO T OPTIONS LISTEN. ENGINE WONT SHUT OFF DISCONNECT WIRE 54A FROM FUEL SOLENOID. DOES THE ENGINE SHUT OFF? POSSIBLE PROBLEMS REASON FOR QUESTION If the engine doesnr shut off, the solenoid is mechanically stuck open. FUEL SOLENOID SOLENOID WIRING ROTARY SWITCH CONTROL BOX KNOWN INFO OPTIONS 1. STE/ICE-R TEST 69 (Page 2-506) 2. MULTIMETER TURN ROTARY SWITCH TO STOP. DISCONNECT BODY CONNECTOR AT PROTECTIVE CONTROL BOX. IS VOLTAGE 0 AT WIRE 54A AT FUEL SOLENOID? FUEL SOLENOID OK ENGINE WON’T SHUT OFF REASON FOR QUESTION If voltage is 0. the problem is in the wiring harness to the switch or in the switch. POSSIBLE PROBLEMS SOLENOID WIRING ROTARY SWITCH CONTROL BOX iT OPTIONS 1. STE/fCE-R TEST 69 (Page 2-506) 2. MULTIMETER RECONNECT BODY CONNECTOR. DISCONNECT WIRE 11A FROM ROTARY SWITCH. IS VOLTAGE 0 AT WIRE 54A AT FUEL SOLENOID? REASON FOR QUESTlON This wire supplies power to the rotary switch. There should be no power to the solenoid with it disconnected. SOLENOID WIRING ROTARY SWITCH SYSTEM TEST TO VERIFY THERE ARE NO 2-128 OTHER FAULTS.