Yamaha MTN850-A 2017 Service Manual page 399

Fault code No.
Item
3-4 [For P0108] Open circuit
Between intake air pressure sensor 1 coupler and ECU coupler: blue–blue
If there is no continuity, replace the wire harness.
3-5 [For P0108] Open circuit
Between intake air pressure sensor 1 coupler and ECU coupler: pink–pink
If there is no continuity, replace the wire harness.
3-6 [For P0108] Open circuit
Between intake air pressure sensor 1 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 8-38.
P0107, P0108
[P0107] Intake air pressure sensor 1: ground short circuit detected.
[P0108] Intake air pressure sensor 1: open or power short circuit
detected.
B/L P L
B/L P L
8-42
FUEL INJECTION SYSTEM