TM-9-2320-387-24-1
TRUCK, UTILITY: S250 SHELTER CARRIER, 4X4, M1113
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE, VOLUME 1
DECEMBER 1997
CHANGE 1
TM-9-2320-387-24-1 - Page 288 of 1205
TM 9-2320-387-24-l
PROTECTIVE CONTROL BOX
KNOWN INFO
BAllERlES
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
ALTERNATOR
OK
HARNESS WIRE 2A OK
POSSIBLE
PROBLEMS
PROTECTlVE
CONTROL
BOX BAD
I
KNOWN INFO
BAlTERIES
OK
LEAD 578 GROUND OK
IGNlTlON SWTCH OK
HARNESS WIRE 29A OK
HARNESS WIRE 29C OK
PARKING BRAKE SWITCH OK
BODY HARNESS WIRES OK
ALTERNATOR
OK
HARNESS WIRE 2A OK
PROTECTIVE
CONTROL BOX
OK
POSSIBLE
PROBLEMS
GLOW PLUG CONTROLLER
BAD
S LED 11 CYCLING ON AND
3FF?
DIAGNOSTIC
FLOWCHART
-
I OPTlONS
VISUAL
REASON
FOR QUESTION
If LED is not
cycling
ON and OFF,
that would
indicate
a
PCB
malfunction.
1 TEST OPTIONS
AT ENGINE OPERATING
TEMPERATURE,
DOES LED 11
STOP CYCLING ON AND OFF?
VISUAL
I
REASON
FOR QUESTION
If LED does not stop cycling ON
IF
1
glow plug controller
malfunction.
TEST CHAIN AGAIN
and OFF, that woulb indicate a
IS REPLACED.
NO PROTECTIVE CONTROL BOX
FAULT FOUND.
2-230
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