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

10.

Soapy Water Leak Test

Air pressure at wet tank OK.

REASON FOR QUESTION

Are front axle quick

Tires OK.

CTIS may be unable to

release valve fittings

CTIS wheel seals OK.

reach selected pressure

free from leaks and

Kneeling valves at front

and four CTIS ECU indicator

damage?

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 hose

valve fittings OK.

and/or fittings (para 23-2).

YES

Intermediate axle quick

release valve fittings OK.

Intermediate axle tee

fittings OK.

POSSIBLE PROBLEMS

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.

2-2060