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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)
KNOWN INFO
TEST OPTIONS
3.
Visual Check
Water temperature gage
REASON FOR QUESTION
operates correctly.
Does VOLTS gage operate
Main code 13, 22, or 25 not
If VOLTS gage does not
correctly?
active in pushbutton shift
operate, wire 3020 from
selector.
connector PX8 pin 1 to
connector PX10 pin 1 is faulty.
POSSIBLE PROBLEMS
Faulty dashboard cable
assembly.
NO
Faulty WTEC II VIM.
Faulty WTEC II cab
transmission harness.
Faulty CTIS cable assembly.
Repair wire 3020 from connector PX8 pin 1
Faulty CTIS ECU.
to connector PX10 pin 1 (para 2-45) or
Faulty speedometer.
replace WTEC II dashboard cable assembly
YES
(para 7-10) or WTEC III dashboard cable
assembly (para 7-11).
KNOWN INFO
TEST OPTIONS
4.
Visual Inspection
Water temperature gage
REASON FOR QUESTION
operates correctly.
Is vehicle equipped with
Main code 13, 22, or 25 not
This question eliminates
WTEC II transmission
active in pushbutton shift
possible problems and
controls?
selector.
determines where
VOLTS gage operates
troubleshooting continues.
correctly.
POSSIBLE PROBLEMS
Faulty dashboard cable
assembly.
NO
Faulty WTEC II VIM.
Faulty WTEC II cab
transmission harness.
Faulty CTIS cable assembly.
Faulty CTIS ECU.
Faulty speedometer.
YES
Go to step 12 of this fault.
2-346
Change 1
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