P1806, P1807; Troubleshooting - Yamaha XSR 900 2022 Service Manual

EAS20623

P1806, P1807

EAS33103

TROUBLESHOOTING

Item
• [P1806] Shift sensor: open or short to ground circuit is detected. Normal signal is not received from the
shift sensor to ECU.
• [P1807] Shift sensor: short to power circuit is detected. Normal signal is not received from the shift
sensor to ECU.
Fail-safe system
• Able to start engine
• Able to drive vehicle
Procedure
1. Connection of shift sensor 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. Turn the main switch to "ON", and then check the condition of the auxiliary system warning.
Is the auxiliary system warning "OFF"?
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. Turn the main switch to "ON", and then check the condition of the auxiliary system warning.
Is the auxiliary system warning "OFF"?
YES
→ Go to step 7, and complete the service.
NO
→ Go to step 3.
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P1806, P1807