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 318 of 1205
TM 9-2320-387-24-l
STARTER CIRCUIT
I
KNOWN INFO
ENGINE WON’T STOP
CRANKING
POSSIBLE
PROBLEMS
ROTARY SWITCH
PCB
WIRING
STARTER
ENGINE WON‘T STOP
CRANKING
POSSIBLE
PROBLEMS
ROTARY SWITCH
PCB
WIRING
STARTER
DISCONNECT
NEGATIVE BATTERY
CABLE TO STOP CRANKING.
NONE
DIAGNOSTIC
FLOWCHART
-
I
REASON
FOR QUESTION
No matter what’s wrong, the
starter can’t crank without battery
power.
,
DISCONNECT WIRES AT ROTARY
SWITCH. WITH SWITCH IN OFF
POSITION,
DO YOU GET:
OPEN CIRCUIT FROM B TO S?
OPEN CIRCUIT FROM B TO R?
OPEN CIRCUIT FROM R TO S?
i r OPTIONS
1. STE/ICE-R
TEST 91
(Page 2-508)
2. MULTIMETER
.
REASON
FOR QUESTION
A good switch exhibits these
open circuits in the OFF
position.
I-
KNOWN INFO
ENGINE WON’T STOP
CRANKING
POSSIBLE
PROBLEMS
ROTARY SWITCH
PCB
WIRING
STARTER
WITH ROTARY SWITCH IN RUN
POSITION, DO YOU GET:
OPEN CIRCUIT FROM B TO S?
OPEN CIRCUIT FROM R TO S?
SHORT CIRCUIT FROM B TO R?
TE!
I
I
#T OPTIONS
1. STEIICE-R
TEST 91
(Page 2-508)
2. MULTIMETER
REASON
FOR QUESTION
A good switch has these opens
and shorts.
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