TM 9-2320-387-24-l
GLOW PLUGS CIRCUIT
TEST OPT,ONS D’AGNoSnC
FLoWCHART
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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
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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).
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2. MULTIMETER
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REASON FOR QUESTION
If the current is OK, then the
POSSIBLE
PROBLEMS
GLOW PLUGS
GLOW PLUG
CONTROLLER
PCB
CABLES
control box are OK.
