TM 5-3805-280-24-1
Sub-System Diagnostics
MONITOR CONTROLLER
YES: Monitor controller
AND DISPLAY (A5)
has failed. Replace.
HARNESS GROUND
CHECK
NO: Repair wiring
harness.
T118378 UN21NOV98
Turn key switch OFF.
Disconnect 20-pin harness connector from monitor controller and display.
Measure continuity from pin 37 of harness connector to cab frame.
Is continuity measured?
9015
15
52
1/1
With key switch ON and economy mode OFF, push economy (E) mode switch.
ECONOMY MODE
YES: Indicator and switch
INDICATOR LIGHT (H6)
are OK.
CHECK
Does switch stay down and economy mode indicator light come ON?
NO: Go to next check.
Push economy (E) mode switch again.
Does switch return to original position and indicator go OFF?
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