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

12.

Soapy Water Leak Test

Air pressure at wet tank OK.

REASON FOR QUESTION

Tires OK.

Are manifold valve assembly

CTIS may be unable to

CTIS wheel seals OK.

delivery port fittings free

reach selected pressure

Kneeling valves at front

from leaks and damage?

and four CTIS ECU indicator

wheels OK.

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.

Tighten loose air hoses.

Rear axle quick release

Replace damaged air hoses

valve fittings OK.

or fittings (para 23-2).

YES

Intermediate axle quick

release valve fittings OK.

Intermediate axle tee

fittings OK.

Front quick release valve

fittings OK.

Front tee fittings OK.

POSSIBLE PROBLEMS

Faulty manifold valve

assembly delivery port

fittings.

Faulty cab floor air

hose fittings.

Faulty manifold valve

assembly.

Faulty CTIS ECU.

2-2064