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.

WARNING

KNOWN INFO

TEST OPTIONS

Read WARNING

Air hoses from wet tank

on following page.

Wheel Valve Vent Test

to manifold valve

REASON FOR QUESTION

assembly OK.

Are all wheel valves

Air compressor and

Changes in temperature

properly vented?

governor adjustment OK.

can cause wheel valves to

POSSIBLE PROBLEMS

stay closed and prevent

Faulty wheel valve venting.

deflation to lower settings

Faulty manifold valve

causing two steady mode

assembly relief valve.

lights to illuminate.

Faulty manifold valve

assembly.

Faulty quick release

valve(s).

Faulty rear axle quick

release valve fittings.

Faulty intermediate axle

quick release valve

fittings.

Replace faulty CTIS wheel

Faulty intermediate

valve(s) (para 12-5).

axle tee fittings.

Faulty front quick

release valve fittings.

Faulty front tee fittings.

Faulty manifold valve

assembly delivery port

YES

fittings.

Faulty cab floor supply

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.

2-2014