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Page Title: TACHOMETER DOES NOT OPERATE OR IS INACCURATE (CONT)
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TM 9-2320-366-20-1
e14. TACHOMETER DOES NOT OPERATE OR IS INACCURATE (CONT)
CAUTION
Read CAUTION
KNOWN INFO
TEST OPTIONS
on following page.
9.
Continuity Test or
Tachometer illuminates.
STE/ICE-R Test #91
VOLTS gage OK.
Is continuity present from
Engine speed sensor OK.
REASON FOR QUESTION
connector P901 pin 4 to
POSSIBLE PROBLEMS
If continuity is not present,
connector P913 pin 12?
Faulty dashboard cable
wire 1550 in auxiliary panel
assembly.
cable assembly is faulty. If
Faulty auxiliary panel cable
continuity is present, wire
assembly.
1550 in dashboard cable
assembly is faulty.
NO
Repair wire 1550 from connector P901
pin 4 to connector P913 pin 12 (para
YES
2-45) or replace auxiliary panel cable
assembly (para 7-58).
Repair wire 1550 from connector J913
socket 12 to connector PX26 socket 1
(para 2-45) or replace WTEC II dashboard
cable assembly (para 7-10) or WTEC III
dashboard cable assembly (para 7-11).
2-366.4
Change 1

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