Yamaha FJR13AG, Service Manual

Page: 544 / 784

FUEL INJECTION SYSTEM
8-67
Fault code No. P0069
4 Defective O
2
sensor heater. Replace the O
2
sensor. Turn the main switch to “ON”,
and then check the condition of
the fault code using the mal-
function mode of the Yamaha di-
agnostic tool.
Condition is “Recovered”
→
Go
to item 6 and finish the service.
Condition is “Detected”
→
Start
the engine, and then check the
condition of the fault code.
Condition is “Recovered”
→
Go
to item 6 and finish the service.
Condition is “Detected”
→
Go to
item 5.
TIP
For this check, also set the en-
gine stop switch to “ON”.
5 Malfunction in ECU. Replace the ECU.
Refer to “REPLACING THE
ECU (engine control unit)” on
page 8-250. Service is finished.
6 Delete the fault code and check
that the engine trouble warning
light goes off. Confirm that the fault code has
a condition of “Recovered” us-
ing the Yamaha diagnostic tool,
and then delete the fault code.
Fault code No. P0030
Item
O
2
sensor heater: defective heater controller detected.
Fault code No. P0069
Item
Intake air pressure sensor or atmospheric pressure sensor: when
the main switch is turned to “ON”, the intake air pressure sensor
voltage and atmospheric pressure sensor voltage differ greatly.
Fail-safe system
Able to start engine
Able to drive vehicle
Diagnostic code No. 03, 02
03
Tool display Displays the intake air pressure.
Procedure
Operate the throttle while pushing the “ ” side of the start/engine stop
switch. (If the display value changes, the performance is OK.)
02
Tool display Displays the atmospheric pressure.
Procedure
Compare the actually measured atmospheric pressure with the tool dis-
play value.
Item
Probable cause of malfunc-
tion and check
Maintenance job
Confirmation of service com-
pletion