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Page Title:
CENTRAL TIRE INFLATION SYSTEM (CTIS) DOES NOT OPERATE (CONT) |
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 TM 9-2320-366-20-2
e85. CENTRAL TIRE INFLATION SYSTEM (CTIS) DOES NOT OPERATE (CONT)
KNOWN INFO
TEST OPTIONS
10.
Resistance Test or
VOLTS gage registers in green
STE/ICE-R Test #91
zone with engine running.
Is 30-80 ohms resistance
REASON FOR QUESTION
Circuit breaker CB40 OK.
present from pneumatic
FRONT BRAKE AIR and
controller connector pin D to
If 30-80 ohms resistance is
REAR BRAKE AIR pressure
pin B?
not present, manifold valve
gages read normal.
assembly is faulty.
Air pressure switch OK.
Start and charging cable
assembly OK.
WTEC II / WTEC III dashboard
cable assembly OK.
POSSIBLE PROBLEMS
NO
Faulty air pressure transducer.
Faulty manifold valve
assembly.
Faulty CTIS ECU.
Replace manifold valve assembly
Faulty CTIS cable assembly.
YES
(para 12-7).
KNOWN INFO
TEST OPTIONS
11.
Resistance Test or
VOLTS gage registers in green
STE/ICE-R Test #91
zone with engine running.
Is 30-80 ohms resistance
REASON FOR QUESTION
Circuit breaker CB40 OK.
present from pneumatic
FRONT BRAKE AIR and
controller connector pin F to
If 30-80 ohms resistance is
REAR BRAKE AIR pressure
pin A?
not present, manifold valve
gages read normal.
assembly is faulty.
Air pressure switch OK.
Start and charging cable
assembly OK.
WTEC II / WTEC III dashboard
cable assembly OK.
NO
POSSIBLE PROBLEMS
Faulty air pressure transducer.
Faulty manifold valve
assembly.
Faulty CTIS ECU.
Replace manifold valve assembly
YES
Faulty CTIS cable assembly.
(para 12-7).
Change 2
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