Starting Unit And Component; Checking The Starter Relay - Yamaha F30B 2018 Service Manual

Starting unit and component

Checking the starter relay

1. Check:
• Starter relay input voltage
Out of specification  Check the pulser
coil or replace the engine ECM.
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a. Disconnect the starter relay connector "a".
b. Connect the digital circuit tester lead to the
starter relay connector.
c. Turn the engine start switch to START.
d. Measure the input voltage between the ter-
minal and ground.
a
Input voltage
12 V (battery voltage)
Brown (Br)–Ground
e. Disconnect the digital circuit tester.
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2. Remove:
• Negative battery lead
• Positive battery lead
• Starter relay
See "Wire harness" (7-20).
Before disconnecting the starter relay ter-
minals, make sure to disconnect the nega-
tive battery terminal.
3. Check:
• Starter relay operation
Out of specification  Replace.
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a. Connect the positive battery lead to the re-
lay connector "a", and the negative battery
lead to the relay connector "b", and then
check for continuity between terminals "c"
and "d".
c
Br
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4. Install:
• Starter relay
• Positive battery lead
• Negative battery lead
See "Wire harness" (7-20).
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Starting unit and component
d
a
Br
B
b
Starter relay terminals continuity
Battery lead connected
Terminal "c"–Terminal "d"