TWO STEADY MODE LIGHTS ILLUMINATE ON CENTRAL TIRE INFLATION SYSTEM (CTIS) ECU

TM 9-2320-366-20-3

m1. TWO STEADY MODE LIGHTS ILLUMINATE ON CENTRAL TIRE INFLATION SYSTEM (CTIS) ECU

INITIAL SETUP

Equipment Conditions

Tools and Special Tools

Engine shut down (TM 9-2320-366-10-1).

Materials/Parts

Tool Kit, Genl Mech (Item 46, Appendix C)

Materials/Parts

Goggles, Industrial (Item 15, Appendix C)

Soap, Laundry (Item 63, Appendix D)

Trestle, Motor Vehicle Maintenance (2)

(Item 47, Appendix C)

Personnel Required

Pan, Wash (Item 25, Appendix C)

(2)

Wrench, Torque, 0-200 lb-in. (Item 59, Appendix C)

START

WARNING

Read WARNING

KNOWN INFO

TEST OPTIONS

on following page.

Visual Inspection

Nothing

REASON FOR QUESTION

Are two steady mode lights

POSSIBLE PROBLEMS

illuminated during inflation?

If two mode lights illuminate

Faulty air hose from wet tank

during inflation, air supply to

to manifold valve assembly.

manifold valve assembly may

Faulty air compressor or

not be adequate.

governor adjustment.

Faulty wheel valve venting.

Faulty manifold valve assembly

relief valve.

Faulty manifold valve

assembly.

Faulty quick release valve(s).

Faulty rear axle quick release

valve fittings.

YES

Go to step 4 of this fault.

Faulty intermediate axle quick

release valve fittings.

Faulty intermediate axle tee

fittings.

Faulty front quick release valve

fittings.

Faulty front tee fittings.

Faulty manifold valve assembly

delivery port 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 CTIS ECU.

2-2008

Change 1