Checking The Diode - Yamaha YZ 2018 Series Owner's Service Manual

Main relay
3
4
2
1
L/R R
Br
R,R/W
1. Positive battery terminal
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
Result
Continuity
(between "3" to "4")
Starting circuit cut-off relay
3
4
2
1
G/B
L/B
L/G,L/W
1. Positive battery terminal
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
Result
Continuity
(between "3" to "4")
Radiator fan motor relay
3
4
2
1
P/L
Br,R/W
R/L
R/W
1. Positive battery terminal
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
ELECTRICAL COMPONENTS
Result
Continuity
(between "3" to "4")
EASB29B352

CHECKING THE DIODE

1. Check:
• Diode
Out of specification  Replace.
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with
tachometer
YU-A1927
TIP
The digital circuit tester readings are shown in
the following table.
No continuity
Tester positive lead  Sky blue
"1"
Tester negative lead  Green/
Black "2"
Continuity
Tester positive lead  Green/
Black "2"
Tester negative lead  Sky blue
"1"
No continuity
Tester positive lead  Red "3"
Tester negative lead  Red/Blue
"4"
Continuity
Tester positive lead  Red/Blue
"4"
Tester negative lead  Red "3"
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Disconnect the diode from the wire harness.
b. Connect the digital circuit tester () to the di-
ode coupler as shown.
c. Check the diode for continuity.
d. Check the diode for no continuity.
1
Sb
G/B
2
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
8-65
3
R
R/L
4