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

15.

Air hoses from wet tank

Wheel Valve Air Line Test

to manifold valve

Are air supply hoses from

REASON FOR QUESTION

assembly OK.

quick release valves to

Leaking or blocked air

Air compressor and

wheel valves free from

supply hoses to wheel

governor adjustment OK.

leaks and damage?

valves will prevent CTIS

Wheel valves venting OK.

from coming to selected

Manifold valve assembly

pressure during inflation

relief valve OK.

or deflation and cause two

Manifold valve assembly

steady mode lights to

OK.

illuminate.

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

Front tee fittings OK.

and/or fittings (para 23-2).

Manifold valve assembly

delivery port fittings OK.

Cab floor supply line

fittings OK.

POSSIBLE PROBLEMS

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.

2-2036