Sakai SV410-2, Shop Manual

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9-012
TROUBLESHOOTING
2-2. Engine
Check following items before troubleshooting.
No blown fuses and power is applied up to fuses.
Check any ground circuit which belongs to components to be checked.
Engine warning lamp must not be lighting. If lamp lights, refer to “workshop manual” of engine manufacturer.
2-2-1. Engine will not start (Starter motor does not run) 1/3
F-R lever must be “N”.
Parking brake switch must be applied.
Foot brake switch must be ON (Brake pedal is not depressed).
Reference Fig.: 2-2-1
Check point Check/Cause Action
1. Battery Measure battery voltage or specific gravity.
Standard voltage : 12 V or more
Standard gravity : 1.26 or more
If value is below standard, battery capacity is insufficient.
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Charge or replace
battery.
2. Starter Switch Check continuity between O-O according to starter switch
connection table.
Switch is OK if there is continuity between connection
O-O.
If there is no continuity, starter switch is faulty.
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Replace starter switch.
3. Starter Motor (1) when starter switch is ON, measure voltage between
starter motor terminal 30 and chassis ground.
Standard voltage : 12 V or more
(2) When starter switch is START, measure voltage
between starter motor terminal 50 and chassis ground.
Standard voltage : 12 V or more
If starter motor does not run even though above items (1)
and (2) are OK, starter motor is faulty.
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Replace starter motor.
4. Battery Relay (1) when starter switch is OFF, measure voltage between
battery relay primary terminal COM and chassis ground.
Standard voltage : 12 V or more
(2) when starter switch is ON, measure voltage between
battery relay coil terminal BR inlet wire BR and coil
ground terminal E.
Standard voltage : 12 V or more
(3) when starter switch is ON, measure voltage between
battery relay secondary terminal NO and chassis ground.
Standard voltage : 12 V or more
If above items (1) and (2) are OK and item (3) is NG,
battery relay is faulty.
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Replace battery relay.
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