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

13.

Soapy Water Leak Test

Air pressure at wet tank OK.

REASON FOR QUESTION

Tires OK.

Are cab floor supply hose

CTIS may be unable to

CTIS wheel seals OK.

fittings free from leaks

reach selected pressure

Kneeling valves at front

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).

Intermediate axle quick

YES

release valve fittings OK.

Intermediate axle tee

fittings OK.

Front quick release valve

fittings OK.

Front tee fittings OK.

Manifold valve assembly

delivery port fittings OK.

POSSIBLE PROBLEMS

Faulty cab floor air

hose fittings.

Faulty manifold valve

assembly.

Faulty CTIS ECU.

2-2066