Yamaha YZF-R1S Service Manual - Elec
8-17
4. Starting circuit cut-off relay
S Disconnect the starting circuit cut-off relay
coupler from the wire harness.
S Connect the pocket tester (Ω 1) and bat-
tery (12 V) to the starting circuit cut-off relay
coupler as shown.
YES
NO
Replace the starting
circuit cut-off relay.
Positive tester probe
! blue/white
Negative tester probe
! blue/white
S Does the starting circuit cut-off relay have
continuity between blue / white
and
blue / white ?
1
2
3
4
EAS00759
Positive battery terminal
! red/black
Negative battery terminal
!
black / yellow
EAS00761
5. Starter relay
S Disconnect the starter relay coupler from the
coupler.
S Connect the pocket tester (Ω 1) and battery
(12 V) to the starter relay coupler as shown.
YES
NO
Replace the starter
relay.
Positive battery terminal
! blue/white
Negative battery terminal
! red/white
Positive tester probe
! red
Negative tester probe
! black
1
2
3
4
S Does the starter relay have continuity be-
tween red and black?
EAS00749
6. Main switch
S Check the main switch for continuity.
Refer to “CHECKING THE SWITCHES”.
S Is the main switch OK?
YES
NO
Replace the main
switch.
EAS00750
7. Engine stop switch
S Check the engine stop switch for continuity.
Refer to “CHECKING THE SWITCHES”.
S Is the engine stop switch OK?
YES
NO
Replace the right
handlebar switch.
EAS00751
8. Neutral switch
S Check the neutral switch for continuity.
Refer to “CHECKING THE SWITCHES”.
S Is the neutral switch OK?
YES
NO
Replace the neutral
switch.
3
4
ELECTRIC STARTING SYSTEM