Checking The Starter Relay; Checking The Diodes - Yamaha YZF-R7 Owner's Service Manual

1
Br
L/W
2
3
L/W
4 L/Y
ELECTRIC STARTING SYSTEM

CHECKING THE STARTER RELAY

• Disconnect the starter relay from the cou-
pler.
• Connect the pocket tester (
tery (12 V) to the starter relay coupler as
shown.
Battery positive terminal
Battery negative terminal
Tester positive probe
Tester negative probe
• Does the starter relay have continuity
between red and black?
Yes
No

CHECKING THE DIODES

• Remove the diodes from the couplers.
• Connect the pocket tester (
diode as show.
• Check the diodes for continuity.
Tester positive probe
Tester negative probe
Tester positive probe
Tester negative probe
Tester positive probe
Tester negative probe
Tester positive probe
Tester negative probe
NOTE:
When you switch the tester's positive and
negative probes, the readings in the above
chart will be reversed.
• Are the tester readings correct?
Yes
No
8 - 15
ELEC
red 3
Good.
Replace.
brown 1
blue/white 2
blue/white 3
blue/yellow 4
blue/white 2
brown 1
blue/yellow 4
blue/white 3
Good.
Replace the defective diode(-s).
– +
1) and bat-
brown 1
blue/white 2
black 4
1) to the
Continu-
ity
No conti-
nuity