TM 9-2320-387-24-l
PROTECTIVE CONTROL BOX
DIAGNOSTIC FLOWCHART
_
KNOWN INFO
BA?TERlESOK
LEAD 578
GROUND OK
IGNITION SWITCH OK
HARNESS WIRE 29A OK
HARNESS WIRE 29C OK
PARKING BRAKE SWITCH OK
BODY HARNESS WIRES OK
POSSIBLE
PROBLEMS
ALTERNATOR BAG
HARNESS WIRE 2A BAD
PROTECTIVE CONTROL
BOX BAD
KNOWN INFO
I
BATTERIES OK
LEAD 578
GROUND OK
IGNITION SWITCH OK
HARNESS WIRE 29A OK
HARNESS WIRE 29C OK
PARKING BRAKE SWKCH OK
BODY HARNESS WIRES OK
POSSIBLE
PROBLEMS
t
ALTERNATOR BAD
HARNESS WIRE 2A BAD
PROTECTlVE CONTROL
BOX BAD
KNOWN INFO
BAtTERIES
OK
IGNlTlON SWITCH OK
HARNESS WIRE 29A OK
HARNESS WIRE 29C OK
PARKING BRAKE SWITCH OK
BODY HARNESS WIRES OK
POSSIBLE
PROBLEMS
ALTERNATOR BAG
LEAD
578
GROUND BAD
HARNESS WIRE 2A BAD
PROTECTlVE CONTROL
BOX BAD
DOES LED 10 MOMENTARILY
COME ON THEN STAY OFF?
PROTECTIVE
;T OPllONS
VISUAL
1 TES
1
REASON FOR QUESTION
If this LED is not ON, that would
indicate a PCB malfunction.
WITH THE IGNITION SWITCH IN
THE RUN (ENGINE RUNNING)
2. VISUAL
POSITION, ARE LEDs 2,3,4,5,
AND 8 ON?
-
REASON FOR QUESTION
If these LEDs are not ON, that
would indicate a PCB malfunction.
IS LED 7 ON?
T OPTIONS
VISUAL
REASON FOR QUESTION
If this LED is not ON, that would
indicate a bad connection to
ground.
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