TM 9-2320-365-20-2
2-1820
NO
YES
Does manifold valve
assembly click when
selecting mode change
and is no air heard blowing
through valve?
Manifold Valve Assembly
Test
TEST OPTIONS
REASON FOR QUESTION
Four CTIS ECU indicator
lights will flash if manifold
valve assembly is defective.
KNOWN INFO
12.
Air pressure at wet tank
OK.
Tires OK.
CTIS wheel seals OK.
Kneeling valves at front
wheels OK.
CTIS wheel valves OK.
Air hoses from quick
release valve to affected
wheels OK.
Front axle quick release
valve OK.
Rear axle quick release
valves OK.
Rear axle quick release
valve fittings OK.
Front quick release valve
fittings OK.
Front tee fittings OK.
Manifold valve assembly
delivery port fittings OK.
Cab floor air hose fittings
OK.
POSSIBLE PROBLEMS
Faulty manifold valve
assembly.
Faulty CTIS ECU.
Repair or replace
manifold valve
assembly (para 12-7).
Replace CTIS ECU
(para 12-6).
m2. FOUR CTIS ECU INDICATOR LIGHTS FLASHING (CONT)
