JLG 260MRT Service Manual - Manual (Page 87)

SECTION 3 - GENERAL ELECTRICAL INFORMATION & SCHEMATICS
3121801 – JLG Lift – 3-21
No response to a function control switch (cont.)
No voltage present at applicable control
valve coil. Check applicable wire for proper con-
nection at terminal strip, valve harness
plug pin, valve harness receptacle pin
and engine start relay. Using suitable test
meter, perform continuity test on wire.
Repair or replace wire or harness as nec-
essary.
No voltage supplied from terminal strip to
engine start relay. Check applicable wire for proper con-
nection at terminal strip, valve harness
plug pin, valve harness receptacle pin
and engine start relay. Using suitable test
meter, perform continuity test on wire.
Repair or replace wire or harness as nec-
essary.
Defective engine start relay. Replace engine start relay.
No voltage supplied to engine from start
relay. Check battery cable from relay to engine
for proper connection or damage. Repair
or replace cable as necessary.
No voltage present at applicable control
valve coil. Check applicable wire for proper con-
nection at terminal strip, valve harness
plug pin, valve harness receptacle pin
and valve coil. Using suitable test meter,
perform continuity check on wires.
Repair or replace harness as necessary.
NO TERMINAL STRIPS!!!!!!!! No voltage
supplied from terminal strip to electric
motor start relay. Check applicable wire for proper con-
nection at terminal strip, valve harness
plug pin, valve harness receptacle pin
and electric motor start relay. Using suit-
able test meter, perform continuity test on
wire. Repair or replace wire as necessary.
Defective electric motor start relay. Replace electric motor start relay.
No voltage supplied to motor from start
relay. Check battery cable from relay to motor
for proper connection or damage. Repair
or replace wire as necessary.
Defective motor/pump assembly. Replace motor/pump assembly.
Table 3-4. Electrical System Troubleshooting
TROUBLE PROBABLE CAUSE REMEDY