CENTRAL TIRE INFLATION SYSTEM (CTIS) REPEATEDLY RESUMES CYCLING 30 SECONDS AFTER INDICATOR LIGHTS STOP FLASHING (cont)

TM 9-2320-366-20-3

m4. CENTRAL TIRE INFLATION SYSTEM (CTIS) REPEATEDLY RESUMES CYCLING 30 SECONDS AFTER

m4.

INDICATOR LIGHTS STOP FLASHING (CONT)

KNOWN INFO

TEST OPTIONS

Front and rear pressure

Soapy Water Leak Test

Are CTIS wheel valves

REASON FOR QUESTION

gages read 120 psi.

If CTIS wheel valves are

free from leaks and

CTIS system operates OK.

leaking, CTIS ECU may

damage at affected

Kneeling valve(s) OK.

detect loss of pressure

wheel(s)?

Tire(s) OK.

POSSIBLE PROBLEMS

on system and repeat

Faulty wheel valve(s).

inflation sequence.

Faulty air hose(s) from

quick release valve to

affected wheel(s).

Faulty quick release

valve(s).

Replace wheel valve

(para 12-5).

YES

KNOWN INFO

TEST OPTIONS

Front and rear pressure

Visual inspection

Are air lines between affected

REASON FOR QUESTION

gages read 120 psi.

If air line(s) between wheel(s)

wheel(s) and quick release

CTIS system operates OK.

and quick release valves are

valve(s) free from folds or

Kneeling valve(s) OK.

constricted, wheel valve(s)

constrictions?

Tire(s) OK.

may not close immediately

Wheel valve(s) OK.

POSSIBLE PROBLEMS

and tires will lose air, causing

Faulty air hose(s) from

CTIS to recycle.

quick release valve to

affected wheel(s).

Faulty quick release

valve(s).

Replace damaged air

lines (para 23-2).

YES

Replace faulty quick release valve(s)

(para 12-8 and/or 12-9).

2-2108