Yamaha MTN1000 2016 Service Manual page 537

Fault code No.
Item
3-4 [For P2229] Open circuit
Between atmospheric pressure sensor coupler and ECU coupler: blue–blue
If there is no continuity, replace the wire harness.
3-5 [For P2229] Open circuit
Between atmospheric pressure sensor coupler and ECU coupler: pink–pink
If there is no continuity, replace the wire harness.
3-6 [For P2229] Open circuit
Between atmospheric pressure sensor coupler and ECU coupler: black/blue–black/blue
If there is no continuity, replace the wire harness.
3-7 Disconnect the couplers from the parts that are connected to the ECU.
Refer to "Parts connected to the ECU" on page 8-37.
P2228, P2229
[P2228] Atmospheric pressure sensor: ground short circuit
detected.
[P2229] Atmospheric pressure sensor: open or power short circuit
detected.
B/L P L
B/L P L
B/L P L
8-120
FUEL INJECTION SYSTEM