Yamaha TMAX 2020 Service Manual page 622

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EAS20614
P1601
EAS33094
TROUBLESHOOTING
Item
Sidestand switch: open or short circuit of the light green lead of the ECU is detected.
Fail-safe system
• Unable to start engine
• Unable to drive vehicle
Procedure
1. Connection of sidestand switch 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. Push the ON/start switch, and then extend and retract the sidestand.
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. Push the ON/start switch, and then extend and retract the sidestand.
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. Connection of sidestand relay 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).
9-148
P1601

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