TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 286 of 1205
TM 9-2320-387-24-l I KNOWN INFO 1 BAllERIES OK LEAD 578 GROUND OK IGNITION SWlTCH OK HARNESS WIRE 29A OK HARNESS WIRE 29C OK PARKING BRAKE SWITCH OK BODY HARNESS WIRES OK GLOW PLUG CONTROLLER OK PROTECTIVE CONTROL BOX IS LED 9 OFF AND 12 ON? BOX BAD I KNOWN INFO I BATI-ERIES OK WD 578 GROUND OK IGNlTlON SWITCH OK HARNESS WIRE 29A OK HARNESS WIRE 29C OK PARKING BRAKE SWITCH OK BODY HARNESS WIRES OK GLOW PLUG CONTROLLER OK POSSIBLE PROBLEMS ALTERNATORBAD I HARNESS WIRE 2A BAD PROTECTlVE CONTROL BOX I KNOWN INFO BATIERIES OK LEAD 578 GROUND OK IGNlTlON SWITCH OK HARNESS WIRE 29A OK HARNESS WIRE 29C OK PARKING BRAKE SWITCH OK BODY HARNESS WIRES OK ALTERNATOR OK HARNESS WIRE 2A OK POSSIBLE PROBLEMS I GLOW PLUG CONTROLLER BA PROTECTIVE CONTROL BOX BAD DIAGNOSTIC FLOWCHART T OPTIONS VISUAL PROTECTIVE REASON FOR QUESTlON If this LED condition does not exist, that would indicate a PCB malfunction. ARE LEDs 9 AND 12 ON? VISUAL If these LEDs are OFF, that would indicate a malfunctioning alternator or damaged harness HARNESS WIRE WHILE ENGINE IS NOT AT OPERATING TEMPERATURE, IS LED 11 ON? ’ TEST OPTIONS 1 VISUAL REASON FOR QUESTION If this LED is not ON, that would indicate a glow plug controller malfunction. TEST CHAIN AGAIN IF GLOW PLUG CONTROLLER IS 2-228