Sakai SW880-1, Shop Manual

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11-025
TROUBLESHOOTING
2-4. Engine
Check following items before troubleshooting.
No blown fuses and power is applied up to fuses.
when measuring voltage and current without disconnecting connectors, refer to “Measuring voltage and current
flowing using tester” (P.11-006 to P.11-008).
Check any ground circuit which belongs to components to be checked.
Engine check lamp must not be lighting. If engine check lamp lights, refer to “Service information” of engine
manufacturer.
2-4-1. Engine will not start (Starter motor does not run) 1/17
F-R lever must be in “N”.
Parking brake switch must be applied.
Foot brake switch must be ON (Brake pedal is not depressed).
Check whether exact meter multiple display shows any error code.
1) when display shows any error code
Reference Fig.: 2-4-1
Error code Check point Check/Cause Action
Pon 1. Connector Check forward switch connector, reverse switch connector
and traveling controller connector terminal 19, 20, working
controller (C1) connector terminal 10, 11 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.
Forward switch terminal NC wire Bw and traveling
controller terminal 19 wire Bw, working controller (C1)
terminal 10 wire BW
Reverse switch terminal NC wire Gr and traveling
controller terminal 20 wire Gr, working controller (C1)
terminal 11 wire Gr
Standard resistance : 10 Ω or less
(2) Measure resistances between switches and fuse box
terminal wires.
Forward switch terminal COM wire wL and fuse box
terminal 6 wire WL
Reverse switch terminal COM wire wG and fuse box
terminal 5 wire WG
Standard resistance : 10 Ω or less
If resistance is abnormal, harness is faulty.
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Repair or replace
harness.
3. Forward
Switch
when starter switch is OFF and F-R lever is “N”, check
continuity between forward switch terminal COM and
terminal NC.
There is continuity in normal condition.
If there is no continuity, forward switch is faulty.
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•
Replace forward
switch.
4. Reverse
Switch
when starter switch is OFF and F-R lever is “N”, check
continuity between reverse switch terminal COM and
terminal NC.
There is continuity in normal condition.
If there is no continuity, reverse switch is faulty.
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•
Replace reverse
switch.
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