Buell 2002 S3T, Service Manual

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2002 Buell S3T: Electric Starter 5-11
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STARTER SYSTEM TESTING 5.6
“ON-MOTORCYCLE” TESTS
Starter Relay Test
1. See Figure 5-6. Locate starter relay. The relay is on the
relay block on the right side of the vehicle under the tail
section. Unplug relay connector.
2. To test relay, proceed to Step 3. If installing a new starter
relay, remove old relay. Attach relay connector plug.
3. See Figure 5-7. Obtain a 12 volt battery and a continuity
tester or ohmmeter.
a. Connect positive battery lead to the 86 terminal.
b. Connect negative battery lead to the 85 terminal to
energize relay.
c. Check for continuity between the 30 and 87 termi-
nals. A good relay shows continuity (continuity tester
lamp “on” or a zero ohm reading on the ohmmeter).
A malfunctioning relay will not show continuity and
must be replaced.
4. If starter relay is functioning properly, proceed to
STARTER CURRENT DRAW TEST .
Starter Current Draw Test
NOTE
●
Engine temperature should be stable and at room tem-
perature.
●
Battery should be fully charged.
See Figure 5-8. Check starter current draw with an induction
ammeter before disconnecting battery. Proceed as follows:
1. Verify that transmission is in neutral. Disconnect spark
plug wires from spark plug terminals.
2. Clamp induction ammeter over positive battery cable
next to starter.
3. With ignition key switch ON, turn engine over by pressing
starter switch while taking a reading on the ammeter.
Disregard initial high current reading which is normal
when engine is first turned over.
a. Typical starter current draw will range between 140-
180 amperes.
b. If starter current draw exceeds 180 amperes, then
the problem may be in the starter or starter drive.
Remove starter for further tests. See
REMOVAL .
Figure 5-6. Starter Relay Location
Figure 5-7. Starter Relay Test
Figure 5-8. Starter Draw Test
Starter Relay
6763
Ohmmeter
b0159a5x
Battery
Battery
Induction
Ammeter
b0160x5x
5