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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)
WARNING
Read WARNING
KNOWN INFO
TEST OPTIONS
on following page.
20.
Voltage Test or
VOLTS gage registers in green
STE/ICE-R Test #89
zone with engine running.
Is 4.9-5.1 VDC present at
REASON FOR QUESTION
Circuit breaker CB40 OK.
connector P113 socket B?
FRONT BRAKE AIR and
If 4.9-5.1 VDC is not present,
REAR BRAKE AIR pressure
CTIS ECU is faulty. If 4.9-5.1
gages read normal.
VDC is present, pressure
Air pressure switch OK.
transducer is faulty.
Start and charging cable
assembly OK.
NO
WTEC II / WTEC III dashboard
cable assembly OK.
Manifold valve assembly OK.
CTIS cable assembly OK.
POSSIBLE PROBLEMS
YES
Replace CTIS ECU (para 12-6).
Faulty air pressure transducer.
Faulty CTIS ECU.
Replace pressure transducer
(para 12-7).
KNOWN INFO
TEST OPTIONS
21.
Continuity Test or
VOLTS gage registers in green
STE/ICE-R Test #91
zone with engine running.
Is continuity present from
REASON FOR QUESTION
Circuit breaker CB40 OK.
air pressure switch pin A to
FRONT BRAKE AIR and
air pressure switch pin B?
If continuity is not present, air
REAR BRAKE AIR pressure
pressure switch is faulty.
gages read normal.
POSSIBLE PROBLEMS
Faulty air pressure switch.
Faulty start and charging cable
NO
assembly.
Faulty WTEC II / WTEC III
dashboard cable assembly.
Faulty CTIS cable assembly.
Replace air pressure switch
YES
(para 23-13).
2-958.12
Change 2
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