Yamaha YZF-R7, Owner'S Service Manual

Page: 359 / 381

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ELEC
SIGNALING SYSTEM
NOTE:
• Before troubleshooting, remove the following part(-s):
1) fuel tank
2) bottom cowling
3) front cowling
4) rear cowling
• Troubleshoot with the following special tool(-s).
Pocket tester
90890-03112
CHECKING THE RELAY UNIT
• Remove the relay unit from the coupler.
• Connect the pocket tester (
Ω ×
1) to the
relay unit terminals as shown.
• Check the starting circuit cutoff relay for
continuity.
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
→
Good.
No
→
Replace.
CHECKING THE OIL LEVEL SWITCH
• Drain the engine oil.
• Remove the oil level switch.
• Connect the pocket tester (
Ω ×
1) to the oil
level switch connector as shown.
• Check the oil level switch for continuity as
follows.
• Are the oil level switch readings correct?
Yes
→
Good.
No
→
Replace.
Tester positive probe
→
sky blue 1
Tester negative probe
→
blue/red 2
Continu-
ity
Tester positive probe
→
blue/red 2
Tester negative probe
→
sky blue 1
No conti-
nuity
Tester positive probe
→
white 1
Tester negative probe
→
ground
Oil level switch float posi-
tion is upper
Å
.
Continu-
ity
Oil level switch float posi-
tion is lower
ı
.
No conti-
nuity
R/B L/W
W
G
Lg
L/R L/B Sb B/Y B B/R L/Y
1 2
W
W
Å
ı
1
1