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TM 9-2320-364-20-4
2-3008
3. INTERAXLE FRONT TO REAR LOCKUP WILL NOT ENGAGE WITH CTIS IN MUD,
SAND AND SNOW (CONT).
Dash lights operate indicating
circuit breaker CB8 OK.
Horn operates indicating circuit
breaker CB16 OK.
Air system OK indicating air
input to interaxle lockup
solenoid valve.
Interaxle lockup cylinder hoses
OK.
Interaxle lockup solenoid valve
OK.
Wire 1435 OK.
Interaxle lockup solenoid OK.
Wire 1435 faulty.
Wire 1882 faulty.
Wire 1888 faulty.
Wire 1884 faulty.
CTIS controller faulty.
INTERAXLE relay R20 faulty.
Wire 1889 faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Continuity test.
STE/ICE-R #91.
If wire 1435 at interaxle lockup
solenoid valve connector,
terminal 2, does not provide a
good ground, solenoid valve
M50 will not operate.
YES
NO
Repair wire 1435 (see
schematic Fig 2-72)
or notify DS
Maintenance.
Verify repair, go to
Step 10 of this Fault.
4.
Is continuity measured on
wire 1435 between interaxle
lockup solenoid connector,
terminal 2, and a known good
ground?
Replace interaxle
lockup solenoid
(Para 12-40).
Verify repair, go to
Step 10 of this Fault.
WARNING
Read WARNING
on Page 2-3009
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