TM 9-2320-365-20-2
2-1892
NO
YES
Is continuity present from
P111D to P110E?
TEST OPTIONS
KNOWN INFO
Circuit breaker OK.
Power supplied to CTIS.
Speedometer OK.
Indicator display lights OK.
CTIS cable-speed signal
OK.
Cab dashboard wiring
harness - speed signal OK.
Cab dashboard wiring
harness - LED input to
CTIS cable OK.
CTIS cable - LED input
to ECU OK.
ECU - O.S. pressure
change function OK.
Overspeed indicator
LED OK.
Cab dashboard wiring
harness - ground for
LED OK.
Cab dashboard wiring
harness - power to LED OK.
POSSIBLE PROBLEMS
Faulty CTIS cable power
to LED.
Faulty ECU - O.S. warning
indicator function.
10.
Continuity Test or
STE/ICE-R Test #91
REASON FOR QUESTION
CTIS overspeed indicator
requires continuity from
P111D to P110E.
Repair wire 1528 (para 2-40)
or replace CTIS cable
assembly (para 7-53).
Replace CTIS ECU
(para 12-6).
m6. CTIS OVERSPEED WARNING LIGHT DOES NOT ILLUMINATE AND/OR OVERSPEED PRESSURE CHANGE
(CONT)
