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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.
10.
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 J31 pin 16 to a
POSSIBLE PROBLEMS
This question eliminates
known good ground?
possible problems and
Faulty dashboard cable
determines where
assembly.
troubleshooting continues.
Faulty auxiliary panel cable
assembly.
Faulty engine control cable
NO
assembly.
YES
Go to step 11 of this task.
Repair wire 3083 from connector P38
socket 2 to connector P31 socket 16
(para 2-45) or replace engine control
cable assembly (para 7-80)
CAUTION
Read CAUTION
KNOWN INFO
TEST OPTIONS
on following page.
11.
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 PX26 socket 6 to
POSSIBLE PROBLEMS
If continuity is not present,
a known good ground?
wire 3083 is faulty.
Faulty dashboard cable
assembly.
Faulty auxiliary panel cable
assembly.
NO
Repair wire 3083 from connector PX26
socket 6 to terminal board TB2 position 26
YES
(para 2-45) or replace WTEC II dashboard
cable assembly (para 7-10) or WTEC III
dashboard cable assembly (para 7-11).
2-366.6
Change 1
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