Yamaha MTN850-A 2017 Service Manual page 413

Fault code No.
Item
6 Defective throttle position sen-
sor.
7 Malfunction in ECU.
8 Delete the fault code and check
that the engine trouble warning
light goes off.
Fault code No. P0132
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Tool display
Procedure
Probable cause of malfunc-
Item
tion and check
P0122, P0123, P0222, P0223, P2135
[P0122] Throttle position sensor: ground short circuit detected.
[P0123] Throttle position sensor: open or power short circuit
detected.
[P0222] Throttle position sensor: ground short circuit detected.
[P0223] Throttle position sensor: open or power short circuit
detected.
[P2135] Throttle position sensor: output voltage deviation error.
Check throttle position sensor
signal 1.
Execute the diagnostic mode.
(Code No. 01)
When the throttle valves are
fully closed:
A value of 11–21 is indicated.
When throttle valves are fully
open:
A value of 96–106 is indicated.
Check throttle position sensor
signal 2.
Execute the diagnostic mode.
(Code No. 13)
When the throttle valves are
fully closed:
A value of 9–23 is indicated.
When the throttle valves are
fully open:
A value of 94–108 is indicated.
An indicated value is out of the
specified range  Replace the
throttle position sensor.
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-157.
Confirm that the fault code has
a condition of "Recovered"
using the Yamaha diagnostic
tool, and then delete the fault
code.
P0132
O sensor: short circuit detected (power short circuit).
2
Able to start engine
Able to drive vehicle
—
—
—
Maintenance job
8-56
FUEL INJECTION SYSTEM
Turn the main switch to "ON",
and then check the condition of
the fault code using the mal-
function mode of the Yamaha
diagnostic tool.
Condition is "Recovered"  Go
to item 8 and finish the service.
Condition is "Detected"  Go to
item 7.
Service is finished.
Confirmation of service com-
pletion