Yamaha YZF-R1 Series Service Manual page 472

COMMUNICATION CONTROL SYSTEM (for YZF-R1M)
EAS31672
TROUBLESHOOTING
The communication control system failed to function.
TIP
• Before troubleshooting, remove the following part(s):
1. Front side cowling/Front panel/Side cover
2. Rider seat/Passenger seat/Battery cover/Tail cover
1. Check the fuses.
(Main, ignition and backup)
Refer to "CHECKING THE FUS-
ES" on page 8-41.
OK ↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-42.
OK ↓
3. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-40.
OK ↓
4. Check the entire communication
control system's wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-35.
OK ↓
Replace the ECU, CCU, GPS unit,
IMU or meter assembly.
Refer to "REPLACING THE ECU (En-
gine Control Unit)" on page 8-41.
NG →
Replace the fuse(s).
NG →
• Clean the battery terminals.
• Recharge or replace the battery.
NG →
Replace the main switch.
NG →
Properly connect or repair the communica-
tion control system's wiring.
8-37