Checking The Relays - Yamaha WR250F Owner's Service Manual

CHECKING THE RELAYS

EAS2GB2388
Check each switch for continuity with the pock-
et tester. If the continuity reading is incorrect,
replace the relay.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
1. Disconnect the relay from the wire harness.
2. Connect the pocket tester (  1) 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
Result
Continuity
(between "3" to "4")
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")
R/W R/Y
L/G Br/W
2 1
9-72
ELECTRICAL COMPONENTS
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")
Headlight relay
3
4
2
1
R
G
R,R/Y
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
R/L
R/W
1. Positive battery terminal
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
Br,R/W