e21. TACHOMETER DOES NOT ILLUMINATE
Personnel Required
(2)
References
TM 9-4910-571-12&P
1.
KNOWN INFO
Hazard lights switch
illuminates.
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
YES
START
This question eliminates
possible problems and
determines where
troubleshooting continues.
Faulty auxiliary panel cable
assembly.
Faulty dashboard cable
assembly.
Faulty tachometer.
NO
Continuity Test or
STE/ICE-R Test #91
CAUTION
Read CAUTION
on following page.
Is continuity present from
connector P901 socket 1 to
a known good ground?
Go to step 4 of this fault.
INITIAL SETUP
Equipment Conditions
Engine shut down (TM 9-2320-365-10).
Tools and Special Tools
Tool Kit, Genl Mech (Item 44, Appendix C)
STE/ICE-R (Item 39, Appendix C)
Multimeter, Digital (Item 22, Appendix C)
Wrench, Torque, 0-200 lb-in. (Item 58, Appendix C)
TM 9-2320-365-20-1
2-390 Change 1