Hyundai Sonata 1991 Shop Manual page 143

MAGNETIC SWITCH HOLD-IN TEST
STARTING SYSTEM
Y27CFOA.
1. Disconnect the field coil wire from the M-terminal of the
magnetic switch.
2. Connect a 12V battery between the S-terminal and the body.
CAUTION
This test must be performed quickly (in less than 10
seconds) to prevent the coil from burning.
3. If the pinion remains out. everything is in order. If the pinion
moves, the hold-in circuit is open. Replace the magnetic
switch.
s
e
@
12V
Field coil wire
'7YO«
FREE RUNNING TEST
Y27CGOA
Carbon-pile rheostat
1. Place the starter motor in a vise equipped with soft jaws and
connect a fully-charged 12-volt battery to the starter motor
as follows.
2. Connect a test ammeter (1 DO-ampere scale) and carbon pile
rheostat as shown in the figure.
3. Connect a voltmeter (15-volt scale) across the starter motor.
4. Rotate the carbon pile to the off position.
5. Connect a battery cable from the battery negative post to the
starter motor body.
6. Adjust the rheostat until the battery voltage shown on the
voltmeter reads 11 volts.
7. Confirm that the maximum amperage is within the
specifications and that the starter motor turns smoothly and
freely.
Current: Max. 90 Amps (reduction drive type)
Speed: Min. 3,000 rpm
V Voltmeter
.. Banery
~
12V
27Y045
MAGNETIC SWITCH RETURN TEST
Y27CHOA
than 10
1. Disconnect the field coil wire from the M-terminal of the
magnetic switch.
2. Connect a 12V battery between the M-terminal and the
body.
CAUTION
This test must be performed quickly (in less
seconds) to prevent the coil from burning.
3. Pull the pinion out and release. If the pinion returns quickly
to its original position, everything is in order. If it doesn't,
replace the magnetic switch.
27-24
G
@
12V
Field coil wire
27Y045