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.

Are air hoses and fittings

REASON FOR QUESTION

A leak in supply hose to

CTIS wheel seals OK.

from quick release

affected wheel will prevent

Kneeling valves at front

valve to affected

wheel from coming to

wheels OK.

wheel(s) free from leaks

matching pressure with all

CTIS wheel valves OK.

and damage?

other wheels and will cause

POSSIBLE PROBLEMS

four CTIS ECU indicator

lights to flash.

Faulty air hoses from

quick release valve

to affected wheel(s).

Faulty front axle

quick release valve.

Tighten loose air hoses.

Faulty rear axle

Replace damaged air hoses

quick release valve(s).

or fittings (para 23-2).

YES

Faulty rear axle

quick release valve

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.

2-2048