FOUR CENTRAL TIRE INFLATION SYSTEM (CTIS) ECU INDICATOR LIGHTS FLASHING (CONT)

TM 9-2320-366-20-3

m2. FOUR CENTRAL TIRE INFLATION SYSTEM (CTIS) ECU INDICATOR LIGHTS FLASHING (CONT)

m2.

KNOWN INFO

TEST OPTIONS

14.

Air pressure at wet tank

Manifold Valve Assembly

Does manifold valve

OK.

Test

REASON FOR QUESTION

assembly click when

Tires OK.

Four CTIS ECU indicator

selecting mode change

CTIS wheel seals OK.

lights will flash if manifold

and is no air heard blowing

Kneeling valves at front

valve assembly is defective.

through valve?

wheels OK.

CTIS wheel valves OK.

Air hoses from quick

release valve to affected

wheels OK.

Front axle quick release

valve OK.

Repair or replace

Rear axle quick release

manifold valve

valves OK.

assembly (para 12-7).

Rear axle quick release

YES

valve fittings OK.

Intermediate axle quick

release valve fittings OK.

Intermediate axle tee

fittings OK.

Front quick release valve

fittings OK.

Front tee fittings OK.

Manifold valve assembly

delivery port fittings OK.

Cab floor air hose fittings

OK.

POSSIBLE PROBLEMS

Faulty manifold valve

assembly.

Faulty CTIS ECU.

Replace CTIS ECU

(para 12-6).

2-2068