Yamaha YZF-R1 Series Service Manual page 711

→ Go to step 4.
NO
a. Connect the coupler securely or replace the wire harness.
b. Turn the main switch to "ON", and then check the condition of the DTC using the malfunction mode
of the YDT.
Is it in the "Recovered" condition?
YES
→ Go to step 7, and complete the service.
NO
→ Go to step 4.
4. Check the backup fuse.
Is check result OK?
YES
→ Go to step 5.
NO
a. Replace the fuse.
b. Turn the main switch to "ON", and then check the condition of the DTC using the malfunction mode
of the YDT.
Is it in the "Recovered" condition?
YES
→ Go to step 7, and complete the service.
NO
→ Go to step 5.
5. Wire harness continuity.
• Disconnect the battery "1", backup fuse "2", ECU coupler "3", main switch coupler "4" and ignition
fuse "5".
• Open circuit check
Between battery and backup fuse holder
Between backup fuse holder and ECU coupler
Between main switch coupler and ignition fuse hold-
er
Between ignition fuse holder and ECU coupler
1
4
Is resistance 0 Ω?
red–red
red/green–red/green
brown/blue–brown/blue
red/white–red/white
2
5
9-214
P1602
3
Y/R P/W P/B O/G Gy/G O Gy/R
Lg/R L/R L/B O/B R/B G/B B
R/L G/Y Br/R Br/Y Br/B W/L Sb/W B
R/G Y/B L/W Y/L Sb R/L B/W B/W
3
L/Y L Y/B R/W
W W L/G B/R
B/G B B/G
B/L B B/Y W/Y