TM 9-2320-387-24-l
GLOW PLUGS CIRCUIT
KNOWN INFO
GLOW PLUGS DC NOT
DRAW ENOUGH
CURRENT
POSSIBLE
PROBLEMS
GLOW PLUGS
GLOW PLUG
CONTROLLER
CABLES
KNOWN INFO
BUT NOT ENOUGH
CURRENT
PCB OK
GLOW PLUGS
GLOW PLUG
I
CONTROLLER
CABLES
I
KNOWN INFO
GLOW PLUGS DRAW SOME
BUT NOT ENOUGH
POSSIBLE
PROBLEMS
GLOW PLUGS
CABLES
TURN THE ROTARY SWITCH TO
RUN. DO THE GLOW PLUGS
DRAW AT LEAST 15 AMPS?
1. STEIfCE-R TEST 80
(Page 2-505)
2. MULTIMETER
REASON FOR QUESTION
A working glow plug draws 12-15
amps. If at least one glow plug is
working, the PCB is OK.
DO THE GLOW PLUGS CYCLE
PROPERLY?
TEST OPTIONS
1
CHECK THE GLOW PLUGS AND
WIRES USING THE PROCEDURE
ON THE RIGHT-HAND PAGE.
REPAIR OR REPLACE PARTS AS
REQUIRED. RERUN THE MAIN
TEST CHAIN.
1. STEIlCE-R TEST 80
(Page 2-505)
2. MULTlMETER
REASON FOR QUESTlON
If the glow plugs cycle property,
the glow plug controller is OK
T OPTtONS
SEE THE PROCEDURE
ON THE
RIGHT-HAND
PAGE AND USE:
1. STEXE-R
TEST 91
(Page 2-598)
2. MULTIMETER
REASON FOR OUESTION
Since the glow plugs draw some
current and cycle property, the
only reason they wouldn’t draw
enough current is that the glow
plugs themselves
are bad or the
wires are no good.
2-294
