Yamaha R15 2022 Service Manual page 419

FUEL INJECTION SYSTEM TROUBLESHOOTING
Fault code No. P2158
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Tool display
Procedure
Probable cause of malfunc-
Item
tion and check
1 Locate the malfunction.
2 Connection of rear wheel sen-
sor 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).
3 Connection of ABS ECU cou-
pler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
4 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).
P2158
Rear wheel sensor: normal signals are not received from the rear
wheel sensor.
Able to start engine
Able to drive vehicle
—
Vehicle speed pulse
0–999
Check that the number increases when the rear wheel is rotated. The
number is cumulative and does not reset each time the rear wheel is
stopped.
Maintenance job
ABS warning light does on.
Refer to "ABS TROUBLE-
SHOOTING OUTLINE" on page
8-104.
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
8-86
ELEC
Confirmation of service com-
pletion
Check the rear wheel speed
with YDT monitor item.
Rotate the rear wheel by hand
and check that the indicated val-
ue.
Rear wheel speed exceeds
0 km/h. → Go to item 9 and fin-
ish the service.
Rear wheel speed remains
0 km/h. → Go to item 2.
Check the rear wheel speed
with YDT monitor item.
Rotate the rear wheel by hand
and check that the indicated val-
ue.
Rear wheel speed exceeds
0 km/h. → Go to item 9 and fin-
ish the service.
Rear wheel speed remains
0 km/h. → Go to item 3.
Check the rear wheel speed
with YDT monitor item.
Rotate the rear wheel by hand
and check that the indicated val-
ue.
Rear wheel speed exceeds
0 km/h. → Go to item 9 and fin-
ish the service.
Rear wheel speed remains
0 km/h. → Go to item 4.
Check the rear wheel speed
with YDT monitor item.
Rotate the rear wheel by hand
and check that the indicated val-
ue.
Rear wheel speed exceeds
0 km/h. → Go to item 9 and fin-
ish the service.
Rear wheel speed remains
0 km/h. → Go to item 5.
– +