Yamaha FJR1300AS(X) Service Manual page 733

ET3P66024
CHECKING THE GRIP WARMER CONTROL
UNIT
1. Check:
• Grip warmer control unit continuity
Out of specification → Replace.
Grip warmer control unit continu-
ity
On
Continuity
Off
No continuity
M MMM M MMM M M MMM M
a. Disconnect the grip warmer control unit cou-
plers from the front cowling wire harness.
b. Connect the pocket tester (Ω × 1) to the grip
warmer control unit coupler as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
brown "1"
• Negative tester probe →
black/green "2"
c. Measure the grip warmer control unit resis-
tance.
L LLL L LLL L L LLL L
ET3P66020
CHECKING THE YCC-S SPEED SENSOR
(FJR1300AS only)
1. Check:
• YCC-S speed sensor output voltage
Out of specification → Replace.
Output voltage reading cycle
0.6 V to 4.8 V to 0.6 V to 4.8 V
M MMM M M MMM M M MMM M
Br
W/B
W/Y
B/G
L LLL L L LLL L L LLL L
ELECTRICAL COMPONENTS
M MMM M MMM M
a. Connect the pocket tester (DC 20 V) to the
YCC-S speed sensor coupler (wire harness
side) as shown.
• Positive tester probe →
white/yellow "1"
• Negative tester probe →
black/blue "2"
MMM
b. Turn the main switch to "ON".
c. Elevate the rear wheel and slowly rotate it.
d. Measure the voltage of white/yellow and
black/blue. With each full rotation of the rear
wheel, the voltage reading should cycle from
1
0.6 V to 4.8 V to 0.6 V to 4.8 V.
L LLL L LLL L
ET3P66021
CHECKING THE GEAR POSITION SENSOR
(FJR1300AS only)
1. Remove:
• Gear position sensor
2
NOTE:
Remove only the screws "1" when removing the
gear position sensor. Do not remove the screws
"2".
LLL
2
8-256
M MMM M M MMM M M MMM M
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
W L/Y
B/L
L LLL L L LLL L L LLL L
M MMM M MMM
1
L W/Y
B/L
2
L LLL L LLL
1
2
1