Yamaha YZF-R1 Series Service Manual page 592

EAS20390
P0069
EAS33136
TROUBLESHOOTING
Item
Intake air pressure sensor or atmospheric pressure sensor: when the main switch is turned to "ON", the
intake air pressure sensor voltage and atmospheric pressure sensor voltage differ greatly.
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.
• P0107, P0108, P0335, P2228, P2229
1. Defective intake air pressure sensor.
• Execute the diagnostic mode. (Code D03)
• When engine is stopped: Atmospheric pressure at the current altitude and weather conditions is in-
dicated.
0 m above sea level
3000 m (9800 ft) above sea level
Is check result OK?
YES
→ Go to step 2.
NO
a. Replace the intake air pressure sensor.
Refer to "THROTTLE BODIES" on page 7-11.
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.
2. Defective atmospheric pressure sensor.
• Execute the diagnostic mode. (Code D02)
• When engine is stopped: Atmospheric pressure at the current altitude and weather conditions is in-
dicated.
0 m above sea level
3000 m (9800 ft) above sea level
Is check result OK?
YES
→ Go to step 3.
NO
Approx. 101 kPa (757.6 mmHg, 29.8 inHg)
Approx. 70 kPa (525.0 mmHg, 20.7 inHg)
Approx. 101 kPa (757.6 mmHg, 29.8 inHg)
Approx. 70 kPa (525.0 mmHg, 20.7 inHg)
9-95
P0069