52_Immobilizer; Troubleshooting - Yamaha MT-09 2021 Service Manual

EAS20679

52_IMMOBILIZER

EAS33308

TROUBLESHOOTING

Item
Codes between the key and immobilizer unit do not match.
Cause
• Signal received from other transponder (failed to recognize code after ten consecutive attempts).
• Signal received from unregistered standard key.
• Immobilizer unit malfunction
• Key malfunction
Procedure
TIP
When a system malfunction occurs, the immobilizer system indicator light will flash. The DTC can be
identified by the flashing pattern. Refer to "HOW TO CHECK DTC" on page 9-27.
1. Place the immobilizer unit at least 50 mm away from the transponder of other vehicles.
• Turn the main switch to "ON".
Is DTC displayed?
YES
→ Go to step 2.
NO
→ Service is completed.
2. Register the standard key.
• Turn the main switch to "ON".
Is DTC displayed?
YES
→ Go to step 3.
NO
→ Service is completed.
3. Turn the main switch to "ON" with another key.
Is DTC displayed?
YES
→ Go to step 4.
NO
→ If the DTC is displayed due to a defective key, replace the key with a new one.
4. Replace the main switch/immobilizer unit, ECU and all key, and complete the service.
Refer to "HANDLEBAR" on page 4-57 and "REPLACING THE ECU (Engine Control Unit)" on
page 8-56.
9-265
52_IMMOBILIZER