FOUR CENTRAL TIRE INFLATION SYSTEM (CTIS) ECU INDICATOR LIGHTS FLASHING (CONT)

TM 9-2320-366-20-3

m2. FOUR CENTRAL TIRE INFLATION SYSTEM (CTIS) ECU INDICATOR LIGHTS FLASHING (CONT)

m2.

KNOWN INFO

TEST OPTIONS

Air pressure at wet tank OK.

Soapy Water Leak Test

Tires OK.

REASON FOR QUESTION

Are intermediate axle

CTIS may be unable to

CTIS wheel seals OK.

quick release valve

reach selected pressure

Kneeling valves at front

fittings free from leaks

and four CTIS ECU indicator

wheels OK.

and damage?

lights will flash if air leaks

CTIS wheel valves OK.

from CTIS air hoses during

Air hoses from quick release

inflation/deflation sequence.

valve to affected wheels OK.

Front axle quick release

valve OK.

Rear axle quick release

valves OK.

Rear axle quick release

Tighten loose air hoses.

valve fittings OK.

Replace damaged air hoses

or fittings (para 23-2).

POSSIBLE PROBLEMS

YES

Faulty intermediate

axle quick release valve

fittings.

Faulty intermediate axle

tee fittings.

Faulty front axle quick

release valve fittings.

Faulty front tee

fittings.

Faulty manifold valve

assembly delivery port

fittings.

Faulty cab floor air

hose fittings.

Faulty manifold valve

assembly.

Faulty CTIS ECU.

2-2056