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Page Title:
SPEEDOMETER DOES NOT OPERATE OR IS INACCURATE (CONT) |
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 TM 9-2320-366-20-1
e12. SPEEDOMETER DOES NOT OPERATE OR IS INACCURATE (CONT)
CAUTION
Read CAUTION
KNOWN INFO
TEST OPTIONS
on following page.
9.
Continuity Test or
Water temperature gage
STE/ICE-R Test #91
operates correctly.
Is continuity absent from
REASON FOR QUESTION
Main code 13, 22, or 25 not
connector P110 socket U to
If continuity is present, wire
active in pushbutton shift
ground?
1793 in CTIS cable assembly
selector.
is faulty.
VOLTS gage operates
correctly.
Vehicle is equipped with
WTEC II transmission
NO
controls.
WTEC II dashboard cable
assembly OK.
WTEC II VIM OK.
WTEC II cab transmission
harness OK.
Repair wire 1793 from connector
P110 socket U to connector P111
POSSIBLE PROBLEMS
YES
socket B (para 2-45) or replace
Faulty CTIS cable assembly.
CTIS cable assembly (para 7-60).
Faulty CTIS ECU.
Faulty speedometer.
KNOWN INFO
TEST OPTIONS
10.
Continuity Test or
Water temperature gage
STE/ICE-R Test #91
operates correctly.
Is continuity absent from
REASON FOR QUESTION
Main code 13, 22, or 25 not
CTIS ECU connector pin U
active in pushbutton shift
to ground?
If continuity is present from
selector.
CTIS ECU connector pin U to
VOLTS gage operates
ground, CTIS ECU is faulty.
correctly.
Vehicle is equipped with
WTEC II transmission
controls.
NO
WTEC II dashboard cable
assembly OK.
WTEC II VIM OK.
WTEC II cab transmission
harness OK.
Replace CTIS ECU
YES
CTIS cable assembly OK.
(para 12-6).
POSSIBLE PROBLEMS
Faulty CTIS ECU.
Faulty speedometer.
2-352
Change 1
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