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 345 of 1205
TM 9-2320-387-24-l
GLOW PLUGS CIRCUIT
TEST OPT,ONS
D’AGNoSnC
FLoWCHART
@>
I
r
KNOWN INFO
NOTHING
POSSIBLE
PROBLEMS
GLOW PLUGS
GLOW PLUG
CONTROLLER
PCB
CABLES
TO RUN THE GLOW PLUG CIRCUIT
TESTS, THE BAlTERIES
MUST BE
IN A GOOD STATE OF CHARGE.
IF YOU AREN’T SURE, RUN THE
BAlTERY
CIRCUIT TESTS.
IF
YOU ARE HERE BECAUSE THE
WAIT-TO-START
LAMP DOESN’T
WORK PROPERLY, SEE THE NOTE
ON THE RIGHT-HAND PAGE.
CHECK ALL THE GLOW PLUG
CIRCUIT CONNECTIONS (GLOW
PLUGS, GLOW PLUG
CONTROLLER,
PROTECTIVE
CONTROL BOX). ARE ALL THE
CONNECTIONS
CLEAN AND
TIGHT?
BATTERY
TESTS (Page 2-237)
REASON
FOR QUESTION
The glow plugs and their control
circuits require battery power
to work.
KNOWN INFO
VISUAL
BATTERIES
OK
I
I
I
I
REASON
FOR QUESTION
Loose or dirty connections
signals.
can hinder current flow or
cause mixups in the control
POSSIBLE
PROBLEMS
GLOW PLUGS
GLOW PLUG
CONTROLLER
PCB
CABLES
r
KNOWN INFO
I
TEST OPTlONS
BATTERIES
OK
CABLES/CONNECTIONS
SEEM OK
1. STEIICE-R
TEST SO
(Page 2-505)
TURN THE ROTARY SWITCH TO
RUN. DO THE GLOW PLUGS
DRAW 75-125 AMPS? (SEE NOTE
ON RIGHT-HAND PAGE).
I
2. MULTIMETER
I
REASON
FOR QUESTION
If the current is OK, then the
POSSIBLE
PROBLEMS
GLOW PLUGS
GLOW PLUG
CONTROLLER
PCB
CABLES
control box are OK.
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