Faulty Ecu Memory; Accelerator Position Sensor: Open Or Short Circuit Detected - Yamaha R1 Series 2015 Service Manual

Fault code No. 50
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item Probable cause of
malfunction and check
1 Malfunction in ECU.
Fault code No. 59
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
14
Procedure
15 Meter display
Procedure
Item Probable cause of
malfunction and check
1 Connection of accelerator posi-
tion sensor 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).
2 Connection of wire harness
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).
50
Faulty ECU memory. (When this malfunction is detected in the ECU,
the fault code number might not appear on the meter display.)
Able/Unable to start engine
Able/Unable to drive vehicle
—
—
—
Maintenance job
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-180.
59

Accelerator position sensor: open or short circuit detected.

Able/Unable to start engine
Able/Unable to drive vehicle
14, 15
Accelerator position sensor signal 1
• 12–22 (fully closed position)
• 97–107 (fully open position)
• Check with throttle grip in fully closed position.
• Check with throttle grip in fully open position.
Accelerator position sensor signal 2
• 10–24 (fully closed position)
• 95–109 (fully open position)
• Check with throttle grip in fully closed position.
• Check with throttle grip in fully open position.
Maintenance job
Improperly connected
nect the coupler securely or
replace the wire harness.
Improperly connected
nect the coupler securely or
replace the wire harness.
8-93
FUEL INJECTION SYSTEM
Confirmation of service com-
Turn the main switch to "ON".
Check that the fault code num-
ber is not displayed.
Confirmation of service com-
Con- Turn the main switch to "ON".
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 2.
Con- Turn the main switch to "ON".
Fault code number is not dis-
played Service is finished.
Fault code number is displayed
Go to item 3.
pletion
pletion