Sakai SW880-1, Shop Manual

Page: 261 / 428

11-051
TROUBLESHOOTING
2-4-1. Engine will not start (Starter motor does not run) 14/17
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.
2) when display shows no error code
Reference Fig.: 2-4-1
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 resistance : 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.
•
Replace battery relay.
5. Starter Relay (1) when starter switch is START, measure voltage
between starter relay terminal inlet wire BR and chassis
ground.
Standard voltage : 12 V or more
(2) when starter switch is ON, measure voltage between
starter relay terminal inlet wire W and chassis ground.
Standard voltage : 12 V or more
(3) when starter switch is START, measure voltage
between starter relay terminal outlet wire BW 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.
•
Replace starter relay.
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