Yamaha YZF-R1 2020 Service Manual page 654

EAS20581
P0352
EAS33061
TROUBLESHOOTING
Item
Cylinder-#2 ignition coil: open or short circuit detected in the primary lead of the cylinder-#2 ignition coil.
Fail-safe system
• Able to start engine (depending on the number of faulty cylinders)
• Able to drive vehicle (depending on the number of faulty cylinders)
Procedure
1. Connection of cylinder-#2 ignition coil coupler.
• Check the locking condition of the coupler.
• Disconnect the coupler and check the pins (bent or broken terminals and locking condition of the
pins).
Is the coupler condition normal?
YES
→ Go to step 2.
NO
a. Connect the coupler securely or replace the wire harness.
b. Start the engine and let it idle for approximately 5 seconds.
c. 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 2.
2. Connection of ECU coupler.
• Check the locking condition of the coupler.
• Disconnect the coupler and check the pins (bent or broken terminals and locking condition of the
pins).
Is the coupler condition normal?
YES
→ Go to step 3.
NO
a. Connect the coupler securely or replace the wire harness.
b. Start the engine and let it idle for approximately 5 seconds.
c. 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 3.
3. Wire harness continuity.
• Disconnect the cylinder-#2 ignition coil coupler "1", ECU coupler "2" and handlebar switch (right)
coupler "3".
• Open circuit check
9-159
P0352