FIVE CENTRAL TIRE INFLATION SYSTEM (CTIS) ECU INDICATOR LIGHTS FLASHING (cont)

TM 9-2320-366-20-3

m3. FIVE CENTRAL TIRE INFLATION SYSTEM (CTIS) ECU INDICATOR LIGHTS FLASHING

(CONT)

KNOWN INFO

TEST OPTIONS

Visual Inspection

Front and rear air gages read

120 PSI.

Is air present from port C

REASON FOR QUESTION

CTIS manifold valve vent hose

on CTIS manifold valve?

This question eliminates

and bulkhead fitting OK.

possible problems and

determines where

POSSIBLE PROBLEMS

troubleshooting continues.

Faulty air hose or fittings.

Faulty front axle CTIS quick

release valve.

Faulty intermediate axle

CTIS quick release valve.

Faulty rear axle CTIS quick

release valve.

Go to Electrical System Troubleshooting

Faulty wheel valve.

YES

(e85. Central Tire Inflation System (CTIS)

Faulty front wheel kneeling

Does Not Operate).

valve.

Faulty wheel seals.

Faulty electrical system.

KNOWN INFO

TEST OPTIONS

Visual Inspection

Front and rear air gages read

120 PSI.

Is CTIS air hoses and

REASON FOR QUESTION

CTIS manifold valve vent hose

fittings free from air leaks

and bulkhead fitting OK.

during inflation mode?

If air is leaking during inflation

mode, CTIS pneumatic system

POSSIBLE PROBLEMS

is faulty.

Faulty air hose or fittings.

Faulty front axle CTIS quick

release valve.

Faulty intermediate axle

CTIS quick release valve.

Faulty rear axle CTIS quick

release valve.

Faulty wheel valve.

Replace or repair air hose

Faulty front wheel kneeling

YES

or fittings (para 2-45).

valve.

Faulty wheel seals.

Faulty electrical system.

2-2072

Change 2