TWO STEADY MODE LIGHTS ILLUMINATE ON CENTRAL TIRE INFLATION SYSTEM (CTIS) ECU (CONT)

TM 9-2320-366-20-3

m1. TWO STEADY MODE LIGHTS ILLUMINATE ON CENTRAL TIRE INFLATION SYSTEM (CTIS) ECU (CONT)

m1.

KNOWN INFO

TEST OPTIONS

12.

Air hoses from wet tank

Soapy Water Leak Test

to manifold valve

Are fittings for tee at

REASON FOR QUESTION

assembly OK.

CTIS may be unable to

muffler free from

Air compressor and

reach selected pressure

leaks and damage?

governor adjustment OK.

and two lights will flash if

Wheel valves venting OK.

air leaks from CTIS air

Manifold valve assembly

hoses during inflation/

relief valve OK.

deflation.

Manifold valve assembly

OK.

Quick release valves OK.

Rear axle quick

release valve fittings OK.

Intermediate axle quick

release valve fittings OK.

Intermediate axle tee

fittings OK.

Front quick release valve

Tighten loose air hoses.

fittings OK.

Replace damaged air hoses

POSSIBLE PROBLEMS

or fittings (para 23-2).

Faulty front tee fittings.

Faulty manifold valve

assembly delivery port

fittings.

Faulty cab floor supply

YES

hose fittings.

Faulty supply hoses from

quick release valve(s) to

wheel valve(s).

Faulty wheel valve filters.

Faulty electrical connections

at CTIS ECU and manifold

valve assembly.

Faulty ECU.

2-2030