e12. SPEEDOMETER DOES NOT OPERATE OR IS INACCURATE (CONT)
TEST OPTIONS
Continuity Test or
STE/ICE-R Test #91
REASON FOR QUESTION
KNOWN INFO
Is continuity absent from
connector P110 socket U to
ground?
If continuity is present, wire
1793 in CTIS cable assembly
is faulty.
NO
YES
KNOWN INFO
YES
NO
TEST OPTIONS
Continuity Test or
STE/ICE-R Test #91
REASON FOR QUESTION
Replace CTIS ECU
(para 12-6).
Is continuity absent from
CTIS ECU connector pin U
to ground?
If continuity is present from
CTIS ECU connector pin U to
ground, CTIS ECU is faulty.
Water temperature gage
operates correctly.
Main code 13, 22, or 25 not
active in pushbutton shift
selector.
VOLTS gage operates
correctly.
Vehicle is equipped with
WTEC III transmission
controls.
WTEC III dashboard cable
assembly OK.
POSSIBLE PROBLEMS
Faulty CTIS cable assembly.
Faulty CTIS ECU.
Faulty speedometer.
14.
15.
Water temperature gage
operates correctly.
Main code 13, 22, or 25 not
active in pushbutton shift
selector.
VOLTS gage operates
correctly.
Vehicle is equipped with
WTEC III transmission
controls.
WTEC III dashboard cable
assembly OK.
CTIS cable assembly OK.
POSSIBLE PROBLEMS
Faulty CTIS ECU.
Faulty speedometer.
CAUTION
Read CAUTION
on following page.
Repair wire 1793 from connector
P110 socket U to connector P111
socket B (para 2-40) or replace
CTIS cable assembly (para 7-53).
TM 9-2320-365-20-1
2-344.4 Change 1
