Yamaha MT-09 2021 Service Manual page 412

2. Connect the digital circuit tester (Ω) and bat-
tery (12 V) to the relay terminal as shown.
Check the relay operation.
Out of specification → Replace.
Starter relay
3
4
1. Positive battery terminal
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
Relay operation
Continuity
(between "3" and "4")
Relay unit (starting circuit cut-off relay)
Br W
W L/W
1. Positive battery terminal
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
Result
Continuity
(between "3" and "4")
R/W L/W
1 2
R L/W R
R L/B L Sb B Sb/W
ELECTRICAL COMPONENTS
Relay unit (fuel pump relay)
3
Br W
1. Positive battery terminal
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
Result
Continuity
(between "3" and "4")
Radiator fan motor relay
R
R/B
R
1. Positive battery terminal
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
Result
Continuity
(between "3" and "4")
8-57
2 1 4
R L/W R
W L/W R L/B L Sb B Sb/W
G/Y