e14. TACHOMETER DOES NOT OPERATE OR IS INACCURATE (CONT)
CAUTION
Read CAUTION
on following page.
TEST OPTIONS
Continuity Test or
STE/ICE-R Test #91
REASON FOR QUESTION
This question eliminates
possible problems and
determines where
troubleshooting continues.
KNOWN INFO
Is continuity present from
connector J31 pin 16 to a
known good ground?
NO
CAUTION
Read CAUTION
on following page.
TEST OPTIONS
Continuity Test or
STE/ICE-R Test #91
REASON FOR QUESTION
KNOWN INFO
Is continuity present from
connector PX26 socket 6 to
a known good ground?
NO
YES
If continuity is not present,
wire 3083 is faulty.
YES
10.
11.
Faulty dashboard cable
assembly.
Faulty auxiliary panel cable
assembly.
Faulty engine control cable
assembly.
POSSIBLE PROBLEMS
Tachometer illuminates.
VOLTS gage OK.
Engine speed sensor OK.
Faulty dashboard cable
assembly.
Faulty auxiliary panel cable
assembly.
POSSIBLE PROBLEMS
Tachometer illuminates.
VOLTS gage OK.
Engine speed sensor OK.
Repair wire 3083 from connector P38
socket 2 to connector P31 socket 16
(para 2-40) or replace engine control
cable assembly (para 7-72).
Repair wire 3083 from connector PX26
socket 6 to terminal board TB2 position 26
(para 2-40) or replace WTEC II dashboard
cable assembly (para 7-10) or WTEC III
dashboard cable assembly (para 7-11).
Go to step 11 of this fault.
TM 9-2320-365-20-1
2-356.6 Change 1
