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

13.

Air hoses from wet tank

Soapy Water Leak Test

to manifold valve

assembly OK.

Are manifold valve assembly

REASON FOR QUESTION

Air compressor and

delivery port fittings free from

CTIS may be unable to

governor adjustment OK.

leaks and damage?

reach selected pressure

Wheel valves venting OK.

and two lights will flash if

Manifold valve assembly

air leaks from CTIS air

relief valve OK.

hoses during inflation/

Manifold valve assembly

deflation.

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

fittings OK.

Tighten loose air hoses.

Front tee fittings OK.

Replace damaged air hoses

or fittings (para 23-2).

POSSIBLE PROBLEMS

Faulty manifold valve

assembly delivery port

fittings.

Faulty cab floor supply

hose fittings.

YES

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.

2-2032