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

17.

Visual inspection

Air hoses from wet tank

REASON FOR QUESTION

to manifold valve

Are electrical connectors

Erratic operation of CTIS

assembly OK.

at CTIS ECU and at

system can often be

Air compressor and

manifold valve assembly

traced to poor electrical

governor adjustment OK.

clean and secure?

connections.

Wheel valves venting OK.

Manifold valve assembly

relief valve OK.

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

Clean and/or tighten

fittings OK.

electrical connections.

Front tee fittings OK.

Notify DS maintenance if

Manifold valve assembly

electrical connectors are

delivery port fittings OK.

damaged.

Cab floor supply hose

fittings OK.

Supply hoses from quick

YES

release valve to wheel

valves OK.

Wheel valve filters OK.

POSSIBLE PROBLEMS

Faulty electrical connections

at CTIS ECU and manifold

valve assembly.

Faulty ECU.

Replace CTIS ECU

(para 12-6).

2-2040