Yamaha MT-09 2021 - P1004; Troubleshooting

9-221
P1004
EAS20786
P1004
EAS33529
TROUBLESHOOTING
Item
Intake air pressure sensor 1 and intake air pressure sensor 2: output voltage deviation error.
Fail-safe system
• Able to start engine
• Able to drive vehicle
Procedure
TIP
If more than one DTC is detected at the same time, perform troubleshooting of DTC listed below first.
• P0105, P0106, P0108, P0335, P0606
1. Defective intake air pressure sensor 1.
• Execute the diagnostic mode. (Code 03)
• When engine is stopped: Atmospheric pressure at the current altitude and weather conditions is in-
dicated.
2. Defective intake air pressure sensor 2.
• Execute the diagnostic mode. (Code 04)
• When engine is stopped: Atmospheric pressure at the current altitude and weather conditions is in-
dicated.
At sea level
Approx. 101 kPa (757.6 mmHg, 29.8 inHg), ap-
prox. 3.64 V
1000 m (3300 ft) above sea level
Approx. 90 kPa (675.1 mmHg, 26.6 inHg), ap-
prox. 3.30 V
2000 m (6700 ft) above sea level
Approx. 80 kPa (600.0 mmHg, 23.6 inHg), ap-
prox. 3.00 V
3000 m (9800 ft) above sea level
Approx. 70 kPa (525.0 mmHg, 20.7 inHg), ap-
prox. 2.70 V
Is check result OK?
YES
→ Go to step 2.
NO
a. Replace the intake air pressure sensor 1.
Refer to “THROTTLE BODIES” on page 7-5.
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 4, and complete the service.
NO
→ Go to step 2.