Yamaha YZF-R1 Series Service Manual page 614

EAS20570
P0122, P0123, P0222, P0223, P2135
EAS33050
TROUBLESHOOTING
Item
• [P0122] Throttle position sensor: ground short circuit detected.
• [P0123] Throttle position sensor: open or power short circuit detected.
• [P0222] Throttle position sensor: open or ground short circuit detected.
• [P0223] Throttle position sensor: power short circuit detected.
• [P2135] Throttle position sensor: output voltage deviation error.
Fail-safe system
• Able/Unable to start engine
• Able/Unable to drive vehicle
Procedure
TIP
If a DTC other than P2135 (P0122, P0123, P0222, P0223) is detected, perform troubleshooting first.
1. Connection of throttle position 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 DTC using the malfunction mode
of the YDT.
Is it in the "Recovered" condition?
YES
→ Go to step 8, 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 DTC using the malfunction mode
of the YDT.
Is it in the "Recovered" condition?
YES
→ Go to step 8, and complete the service.
NO
P0122, P0123, P0222, P0223, P2135
9-117