LS tractor MT122 - Page 127

5 -38
System Faults Possible causes Solutions
Electric
System
Battery does not
charge
▲ Abnormal wiring
▲ Alternator failure
▲ Lack of fan belt tension or
broken
▲ Abnormal battery
▲ Check the tightening state
of terminals and ground
▲ Repair or replace
▲ Adjust fan belt tension or
replace
▲ Replace
Headlight is dark.
▲ Battery capacity is low
▲ Bad wiring and contact
▲ Charge or replace
▲ Check and repair
Headlight is not ON.
▲ Light bulb cut-off
▲ Fuse blown
▲ Replace
▲ Check the cause, and
replace it
Horn(if fitted) does not
sound.
▲ Switch failure
▲ Abnormal wiring
▲ Horn failure
▲ Replace
▲ Repair
▲ Replace
Turn signal light does
not work.
▲ Light bulb cut-off
▲ Bad connection
▲ Fuse blown
▲ Replace
▲ Tighten terminals
▲ Check the cause, and
replace it
Cold start aid indicator
is not ON.
▲ Bad connection of preheat
plug wiring
▲ Check and tighten
Other illuminating light
or indicator is not ON.
▲ Fuse blown
▲ Light bulb cut-off
▲ Check the cause, and
replace it
▲ Replace