Yamaha MTN850-A 2017 Service Manual page 414

Fault code No.
Item
1 Installed condition of O
2 Connection of O
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).
3 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).
4 Wire harness continuity.
5 Defective O sensor.
2
6 Malfunction in ECU.
7 Delete the fault code and check
that the engine trouble warning
light goes off.
P0132
O sensor: short circuit detected (power short circuit).
2
sensor. Check for looseness or pinch-
2
ing.
Improperly installed sensor 
Reinstall or replace the sensor.
Improperly connected  Con-
sensor cou-
2
nect the coupler securely or
replace the wire harness.
Improperly connected  Con-
nect the coupler securely or
replace the wire harness.
Open or short circuit  Properly
connect or replace the wire har-
ness.
Between O
joint connector.
black/blue–black/blue
Between joint connector and
ECU coupler.
black/blue–black/blue
Between O
ECU coupler.
gray/green–gray/green
Check the O
Defective  Replace the O
sensor.
Refer to "ENGINE REMOVAL"
on page 5-3.
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.
FUEL INJECTION SYSTEM
sensor coupler and
2
sensor coupler and
2
sensor.
2
2
8-57
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 7 and finish the service.
Condition is "Detected"  Go to
item 2.
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 7 and finish the service.
Condition is "Detected"  Go to
item 3.
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 7 and finish the service.
Condition is "Detected"  Go to
item 4.
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 7 and finish the service.
Condition is "Detected"  Go to
item 5.
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 7 and finish the service.
Condition is "Detected"  Go to
item 6.