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

Air hoses from wet tank

Manifold Valve Assembly

to manifold valve

Test

REASON FOR QUESTION

assembly OK.

Is manifold valve

If manifold valve

Air compressor and

assembly operating?

assembly is not operating,

governor adjustment OK.

CTIS cannot inflate or

Wheel valves venting OK.

deflate, and will cause two

Manifold valve assembly

steady mode lights to

relief valve OK.

POSSIBLE PROBLEMS

illuminate.

Faulty manifold valve

assembly.

Faulty quick release

valve(s).

Faulty rear axle quick

release valve fittings.

Faulty intermediate axle

quick release valve

fittings.

Repair or replace manifold

Faulty intermediate

valve assembly (para 12-7).

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.

2-2018