Sakai SW880-1, Shop Manual

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11-135
TROUBLESHOOTING
2-6-2. Vibration frequency cannot be switched 1/3
Set vibration mode select switch to “ ” (continuous mode).
Vibration frequency select switch is fixed at 4000 vpm, vibration change switch is “
” when frequency
cannot be switched.
Check whether exact meter multiple display shows any error code.
Reference Fig.: 2-6-1
Error code Check point Check/Cause Action
E21 1. Connector Check vibration frequency select switch, vibration change
switch and traveling controller connector terminal 31, 32,
33 for corrosion, breakage, bending and looseness.
If any abnormality is found, connector is faulty.
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Replace connector
or terminal.
2. Harness (1) Measure resistances between switches and traveling
controller terminal wires.
Vibration frequency select switch terminal 3 wire G and
traveling controller terminal 31 wire G
Vibration frequency select switch terminal 6 wire L and
traveling controller terminal 32 wire L
Vibration change switch terminal 2 wire Br and traveling
controller terminal 33 wire Br.
Standard resistance : 10 Ω or less
(2) Measure resistances between switches and fuse box
terminal wires.
Vibration frequency select switch terminal 1, 4 wires
YW, vibration change switch terminal 1 wire YW and
fuse box terminal 8 wire YW.
Standard resistance : 10 Ω or less
If resistance is abnormal, harness is faulty.
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Repair or replace
harness.
3. Vibration
Frequency
Select Switch
(1) when starter switch is ON, measure voltage between
vibration frequency select switch terminal 1, 4 inlet
wires YW and chassis ground.
Standard voltage : 12 V or more
(2) when starter switch is ON and vibration frequency
select switch is “2500”, measure voltage between
vibration frequency select switch terminal 6 outlet wire L
and chassis ground.
Standard voltage : 12 V or more
(3) when starter switch is ON and vibration frequency
select switch is “3000”, measure voltage between
vibration frequency select switch terminal wires and
chassis ground.
Vibration frequency select switch terminal 3 outlet wire
G and chassis ground.
Vibration frequency select switch terminal 6 outlet wire
L and chassis ground.
Standard voltage : 12 V or more
(4) when starter switch is ON and vibration frequency
select switch is “4000”, measure voltage between
vibration frequency select switch terminal 3 outlet wire
G and chassis ground.
Standard voltage : 12 V or more
If above item (1) is OK and any of items (2) through (4) is
NG, vibration frequency select switch is faulty.
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Replace vibration
frequency select
switch.
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