TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 282 of 1205
TM 9-2320-387-24-l PROTECTIVE CONTROL BOX KNOWN INFO BAllERlES OK LEAD 578 GROUND OK IGNITION SWITCH OK HARNESS WIRE 29A OK HARNESS WIRE 29C OK PARKING BRAKE SWITCH OK BODY HARNESS WIRES OK POSSIBLE PROBLEMS GLOW PLUG CONTROLLER BAD ALTERNATOR BAD HARNESS WIRE 2A BAD PROTECTIVE CONTROL BOX BAD KNOWN INFO BAllERIES OK LEAD 578 GROUND OK IGNITION SWII%H OK HARNESS WIRE 29A OK HARNESS WIRE 29C OK PARKING BRAKE SWlTCH OK BODY HARNESS WIRES OK POSSIBLE PROBLEMS GLOW PLUG CONTROLLER BAD ALTERNATOR BAD HARNESS WIRE 2A BAD PROTECTlVE CONTROL BOX BAD I KNOWN INFO BAllERlES OK LEAD 578 GROUND OK IGNITION SWlTCH OK HARNESS WIRE 29A OK i HARNESS WIRE 29C OK PARKING BRAKE SWITCH OK BODY HARNESS WIRES OK GLOW PLUG CONTROLLER OK POSSIBLE PROBLEMS ALTERNATOR BAD HARNESS WIRE 2A BAD PRO?ECTlVE CONTROL BOX BAD r IS LED 8 ON? DIAGNOSTIC FLOWCHART -- 1 OPTIONS 1. TSY rr. 2. VISUAL REASON FOR QUESTlON If this LED is not ON, that would indicate a PCB malfunction. PROTECTIVE IS LED 11 ON? DURING GLOW PLUG CYCLING, LED 11 MAY FLICKER. VISUAL / 7 REASON FOR QUESTION WITH THE IGNITION SWITCH IN THE START (ENGINE CRANKING) POSITION, DO LEDs 11 AND 13 GO OUT, AND DOES ENGINE CRANK? 18 1 TEST OPTIONS 1 1. TRY rr. 2. VISUAL i REASON FOR QUESTlON If these LEDs do not go ON, that would indicate malfunctioning batteries. CHECK BATTERY VOLTAGE AND YES ? 2-224