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TM 9-2320-364-20-4
2-3012
3. INTERAXLE FRONT TO REAR LOCKUP WILL NOT ENGAGE WITH CTIS IN MUD,
SAND AND SNOW (CONT).
7.
Repair wire 1884 (see
schematic Fig 2-72)
or notify DS
Maintenance.
Verify repair, go to
Step 10 of this Fault.
YES
NO
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 1882 OK.
Wire 1888 OK.
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 #89.
If there is no continuity, interaxle
lockup will not operate.
WARNING
Is continuity measured on
wire 1884 between CTIS
controller connector MC105,
terminal 3 and INTERAXLE
relay R20, terminal 85?
Read WARNING
on Page 2-3013
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