Sakai SW880-1, Руководство по ремонту

Страница: 325 / 428

11-115
TROUBLESHOOTING
2-5-5. Auto speed function does not work 6/9
Parking brake switch must be released.
Foot brake switch must be ON (Brake pedal is not depressed).
Set speed change switch to “
”.
(Automatic speed function is disabled when speed change switch is “ ”.)
Check that speed can be changed by speed change switch between operation speed (“ ”) and traveling
speed (“ ”).
Set throttle switch to “FULL”.
(Automatic speed function is disabled when throttle switch is in any other position than “FULL”.)
Check whether exact meter multiple display shows any error code.
1) when display shows any error code
Reference Fig.: 2-5-1
Error code Check point Check/Cause Action
E22 3. IPF Select
Switch
(1) when starter switch is ON, measure voltage between
IPF select switch terminal 1, 3, 5 inlet wires Yw and
chassis ground.
Standard voltage : 12 V or more
(2) when starter switch is ON and IPF select switch is “10”,
measure voltage between IPF select switch terminal 2
outlet wire GW and chassis ground.
Standard voltage : 12 V or more
(3) when starter switch is ON and IPF select switch is “11”,
measure voltage between IPF select switch terminal 4
outlet wire LW and chassis ground.
Standard voltage : 12 V or more
(4) when starter switch is ON and IPF select switch is “12”,
measure voltage between IPF select switch terminal 6
outlet wire BrW and chassis ground.
Standard voltage : 12 V or more
(5) when starter switch is ON and IPF select switch is “13”,
measure voltage between IPF select switch terminal 2
outlet wire GW, terminal 4 outlet wire LW and chassis
ground.
Standard voltage : 12 V or more
(6) when starter switch is ON and IPF select switch is “14”,
measure voltage between IPF select switch terminal 4
outlet wire LW, terminal 6 outlet wire BrW and chassis
ground.
Standard voltage : 12 V or more
(7) when starter switch is ON and IPF select switch is “15”,
measure voltage between IPF select switch terminal 2
outlet wire GW, terminal 6 outlet wire BrW and chassis
ground.
Standard voltage : 12 V or more
If above item (1) is OK and any of items (2) through (7) is
NG, IPF select switch is faulty.
•
Replace IPF select
switch.
4. Resistor Unit Measure resistances between resistor unit wires and
ground wire.
Resistor unit wire No.40 wire GW and ground wire
Resistor unit wire No.41 wire LW and ground wire
Resistor unit wire No.42 wire BrW and ground wire
Standard resistance : 300 Ω
If resistance is abnormal, resistor unit is faulty.
(NOTICE)
Resistor unit is used to stabilize contact of switch.
•
•
•
•
•
•
Replace resistor
unit.
•
•
•
•
•
•