O2 Sensor 1: No Normal Signals Are Received From The O2 Sensor 1; Latch Up Detected - Yamaha R1 Series 2015 Service Manual

Fault code No.
Item
4 Wire harness continuity.
5 Check fuel pressure.
6 Defective O sensor 1.
2
7 Malfunction in ECU.
Fault code No. 30
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item Probable cause of
malfunction and check
24
O sensor 1: no normal signals are received from the O
2
Open or short circuit
the wire harness.
Between O sensor 1 coupler
2
and ECU coupler.
gray/green–gray/green
pink/black–pink/black
Between O sensor 1 coupler
2
and joint connector.
black/blue–black/blue
red/white–red/white
Between joint connector and
ECU coupler.
black/blue–black/blue
Between joint connector and
fuse box.
red/white–red/white
Refer to "CHECKING THE
FUEL PRESSURE" on page
7-15.
Check the O sensor 1.
2
Replace if defective.
Refer to "ENGINE REMOVAL"
on page 5-3.
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-180.
30

Latch up detected.

Unable to start engine
Unable to drive vehicle
17
Displays the bank angle in increments of 5
• 0–5 (vehicle is vertical)
• Less than 30 (when the sidestand is used)
Check that 0–5 is displayed when the vehicle is vertical and that the dis-
played value increases as the vehicle continues to incline.
Maintenance job
8-71
FUEL INJECTION SYSTEM
Replace Start the engine, warm it up,
and then race it, or execute the
diagnostic mode. (Code No. 63)
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 5.
Start the engine, warm it up,
and then race it, or execute the
diagnostic mode. (Code No. 63)
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 6.
Start the engine, warm it up,
and then race it, or execute the
diagnostic mode. (Code No. 63)
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 7.
Confirmation of service com-
sensor 1.
2
pletion