Sakai SW880-1, Shop Manual

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TROUBLESHOOTING
2-5-5. Auto speed function does not work 3/9
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
E21 4. Vibration
Change Switch
(1) when starter switch is ON, measure voltage between
vibration change switch terminal 1 inlet wire YW and
chassis ground.
Standard voltage : 12 V or more
(2) When starter switch is ON and vibration change switch is
“ ”, measure voltage between vibration change
switch terminal 3 outlet wire GR and chassis ground.
Standard voltage : 12 V or more
(3) when starter switch is ON and vibration change switch
is “
”, measure voltage between vibration change
switch terminal 2 outlet wire Br and chassis ground.
Standard voltage : 12 V or more
If above item (1) is OK and item (2) or (3) is NG, vibration
change switch is faulty.
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Replace vibration
change switch.
5. Resistor Unit Measure resistances between resistor unit wires and
ground wire.
Resistor unit wire No. 32 wire G and ground wire
Resistor unit wire No. 33 wire L and ground wire
Resistor unit wire No. 34 wire Br 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.
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Replace resistor
unit.
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