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

16.

Air hoses from wet tank

Wheel Valve Filter Inspection

to manifold valve

Are filters at wheel

REASON FOR QUESTION

assembly OK.

Clogged wheel valve filters

valves clean?

Air compressor and

prevent air from passing

governor adjustment OK.

into or escaping from tires

Wheel valves venting OK.

during inflation or deflation

Manifold valve assembly

and cause two steady mode

relief valve OK.

lights to illuminate.

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

fittings OK.

Clean or replace wheel

Front tee fittings OK.

valve filters (para 12-5).

Manifold valve assembly

delivery port fittings OK.

Cab floor supply hose

fittings OK.

Supply hoses from quick

YES

release valve to wheel

valves OK.

POSSIBLE PROBLEMS

Faulty wheel valve filters.

Faulty electrical connections

at CTIS ECU and manifold

valve assembly.

Faulty ECU.

2-2038