Yamaha YZF-R1 2020 Service Manual page 777

EAS20684
56_IMMOBILIZER
EAS33313
TROUBLESHOOTING
Item
Unidentified code is received.
Cause
• Noise interference or disconnected lead/cable.
Procedure
TIP
When a system malfunction occurs, the DTC number is indicated in the meter display and the immobi-
lizer system indicator light flashes at the same time. The pattern of flashing also shows the DTC. Refer
to "HOW TO CHECK DTC" on page 9-22.
1. Check the wire harness and connector.
• Turn the main switch to "ON".
Is DTC displayed?
YES
→ Go to step 2.
NO
→ Service is completed.
2. Replace the main switch/immobilizer unit.
Refer to "HANDLEBARS" on page 4-83.
• Turn the main switch to "ON".
Is DTC displayed?
YES
→ Go to step 3.
NO
→ Service is completed.
3. Replace the ECU, and complete the service.
Refer to "REPLACING THE ECU (Engine Control Unit)" on page 8-41.
9-282
56_IMMOBILIZER