Yamaha YZF-R1 2012, Service Manual

Page: 446 / 556

FUEL INJECTION SYSTEM
8-49
If fault codes 13 and 14 are indicated simultaneously, take the actions specified for fault code 13
first.
Fault code No. 13
Symptom Open or short circuit of intake air pressure sensor lead
Fail-safe action
Engine startup: Possible
Riding: Possible
Diagnostic monitor-
ing code No.
D:03
Meter display Displays the intake air pressure.
Checking method
Set the engine stop switch to “ ”, and then push the start switch
“ ”. (If the display value changes, the performance is OK.)
Item/components and
probable cause
Check or maintenance job
Sensor inspection proce-
dure
1 Connection of intake air pres-
sure sensor coupler
Check the connection of the
coupler is secure.
Remove the coupler, and
check each pin (for bending,
wear, or locking). Poor connection
→
Connect
it securely, or repair/replace
the wire harness.
Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated.
→
Recovered.
Fault code indicated.
→
Check the next step.
2 Connection of main harness
ECU coupler
Check the connection of the
coupler is secure.
Remove the coupler and
check each pin (for bending,
wear, or locking). Poor connection
→
Connect
it securely, or repair/replace
the wire harness.
Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated.
→
Recovered.
Fault code indicated.
→
Check the next step.
3 Continuity of wire harness Open or short circuit
→
Replace the wire harness.
Black/Blue–Black/Blue
Pink/White–Pink/White
Blue–Blue
Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated.
→
Recovered.
Fault code indicated.
→
Check the next step.
4 Sensor installation status
- Check the mounting section
for loose or pinched mount-
ing.
Incorrect installation
→
Rein-
stall or repair the sensor.
Place the main switch to the
ON position, and check the
fault code indication.
No fault code indicated.
→
Recovered.
Fault code indicated.
→
Check the next step.