Yamaha 2012 TMAX XP500A Service Manual page 423

Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item/components and
probable cause
6 ECU malfunction
TIP
Work in a complete cold-engine condition.
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Item/components and
probable cause
1 Connection of intake air tem-
perature sensor coupler
Check the connection of the
coupler is secure.
Disconnect the coupler, and
check each pin (for bending,
wear, or locking).
2 Connection of wire harness
ECU coupler
Check the connection of the
coupler is secure.
Disconnect the coupler, and
check each pin (for bending,
wear, or locking).
3 Continuity of wire harness
21
Coolant temperature sensor: open or short circuit detected. (no nor-
mal signals are received from the coolant temperature sensor.)
Able to start engine
Able to drive vehicle
d:06
Displays the coolant temperature.
Compare the actually measured coolant temperature with the meter
display value.
Check or maintenance job
Replace the ECU.
22
Intake air temperature sensor: open or short circuit detected. (no
normal signals are received from the intake air temperature sensor.)
Able to start engine
Able to drive vehicle
d:05
Displays the intake air temperature.
Compare the actually measured intake air temperature with the
meter display value.
Check or maintenance job
Poor connection → Connect it
securely, or repair/replace the
wire harness.
Poor connection → Connect it
securely, or repair/replace the
wire harness.
Open or short circuit →
Replace the wire harness.
Black/blue–Black/blue
Brown/white–Brown/white
FUEL INJECTION SYSTEM
8-48
Sensor inspection proce-
dure
Sensor inspection proce-
dure
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.
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.
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.