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 CTIS wheel valves

REASON FOR QUESTION

Air leaks from wheel

CTIS wheel seals OK.

and front wheel

valves and kneeling valve

kneeling valves free

POSSIBLE PROBLEMS

at front wheels may cause

from leaks and damage

Faulty kneeling

four CTIS ECU indicator

at affected wheel(s)?

valve(s) at front

lights to flash.

wheel(s).

Faulty CTIS wheel

valve(s).

Faulty air hoses from

quick release valve

to affected wheel(s).

Clean or replace

Faulty front axle

kneeling valve (para

quick release valve.

12-5). Replace wheel

Faulty rear axle

YES

seal (para 12-5).

quick release valve(s).

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.

2-2046