KNOWN INFO
TEST OPTIONS
REASON FOR QUESTION
POSSIBLE PROBLEMS
VOLTS gage registers in green
zone with engine running.
Circuit breaker CB40 OK.
FRONT BRAKE AIR and
REAR BRAKE AIR pressure
gages read normal.
Air pressure switch OK.
Start and charging cable
assembly OK.
Dashboard cable assembly OK.
CTIS cable assembly OK.
If solenoid resistance is
measured below 30 ohms or
above 80 ohms, manifold valve
assembly is faulty.
Faulty manifold valve
assembly.
Faulty CTIS ECU.
YES
NO
18.
Replace CTIS ECU
(para 12-6).
Is continuity present at
30-80 ohms resistance
from pneumatic controller
connector pin E to
pneumatic controller
connector pin A?
CAUTION
Read CAUTION
on following page.
e82. CENTRAL TIRE INFLATION SYSTEM (CTIS) DOES NOT OPERATE (CONT)
TM 9-2320-365-20-1
2-918.6 Change 1
Resistance Test or
STE/ICE-R Test #91
Repair manifold valve assembly
(para 12-7).