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 444 of 1205
TM
9-2320-387-24-l
TRANSMISSION
SYSTEM
DIAGNOSTIC
FLOWCHART
r&
1 TESTOPTIONS
KNOWN INFO
.
CONNECT DIAGNOSTIC SWITCH
CABLE TO THE TRANSMISSION
CONTROL MODULE (TCM) J2
CONNECTOR.
DISCONNECT
GLOW PLUG CONTROLLER. TURN
VEHICLE IGNITION
TO THE RUN
POSITION. DOES TRANSMISSION
CHECK LAMP STEADILY
ILLUMINATE?
VISUAL
1
REASON
FOR QUESTION
Ttansmisssion
check lamp
may
be faulty.
NO LEAKS
FLUID OK
SHIFTER
OK
POSSIBLE
PROBLEMS
TRANSMISSION
1
TEST OPTIONS
KNOWN INFO
I
MULTIMETER
NO LEAKS
FLUID OK
SHIFTER
OK
CHECK VOLTAGE ON HARNESS
LEADS TO TRANSMISSION
CHECK
LAMP. DID YOU GET:
>12 V ON PIN 1 (CKT 657B)?
0 V ON PIN 2 (CKT 657A)?
POSSIBLE
PROBLEMS
1
REASON
FOR QUESTION
Transmission
check lamp or
harness leads may be faulty.
TRANSh’!XION
0
YES
t
83
1
TEST OPTIONS
POSITION SWITCH TO ON. DOES
THE TRANSMISSION
CHECK LAMP
FLASH THREE CODE 12s
INDICATING THE TCM IS CAPABLE
OF DIAGNOSTICS?
SEE FLOWCHART
AT RIGHT.
KNOWN INFO
NO LEAKS
FLUID OK
SHIFTER
OK
POSSIBLE
PROBLEMS
REASON
FOR QUESTION
Transmission
check lamp must
flash three code 12s indicating the
TCM is capable at diagnostics.
TRANSMISSION
2-392
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