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 rear axle quick

CTIS wheel seals OK.

CTIS may be unable to

release valve fittings

Kneeling valves at front

reach selected pressure

free from leaks and

wheels OK.

and four CTIS ECU indicator

damage?

CTIS wheel valves OK.

lights will flash if air leaks

Air hoses from quick release

from CTIS air hoses during

valve to affected wheels OK.

inflation/deflation sequence.

Front axle quick release

valve OK.

Rear axle quick release

valves OK.

POSSIBLE PROBLEMS

Tighten loose air hoses.

Replace damaged air hoses

Faulty rear axle

or fittings (para 23-2).

quick release valve

YES

fittings.

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.

2-2054