Sakai R2-4, Shop Manual

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10-019
TROUBLESHOOTING
2-3. 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 or ENGINE STOP lamp must not be lighting. If ENGINE wARNING lamp or ENGINE
STOP lamp lights, refer to troubleshooting of engine manufacturer.
2-3-1. Engine will not start (Starter motor does not run) 1/2
F-R lever must be in “N”.
Parking brake switch must be applied.
Reference Fig.: 2-3-1
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 B and chassis ground.
Standard voltage : 12 V or more
(2) when starter switch is START, measure voltage
between starter motor terminal S and chassis ground.
Standard voltage : 12 V or more
If above items (1) and (2) are OK and starter motor does
not run, starter motor is faulty.
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Replace starter motor.
4. Starter Relay (1) when starter switch is START, measure voltage
between starter relay terminal 86 inlet wire W and
chassis ground.
Standard voltage : 12 V or more
(2) when starter switch is START, measure voltage
between starter relay terminal 30 inlet wire BY and
chassis ground.
Standard voltage : 12 V or more
(3) when starter switch is START, measure voltage
between starter relay terminal 87 outlet wire RW and
chassis ground.
Standard voltage : 12 V or more
If above items (1) and (2) are OK and item (3) is NG,
starter relay is faulty.
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Replace starter relay.
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