Yamaha 2014 MT-07 Service Manual page 475

Fault code No.
Item
1 Connection of meter assembly
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).
2 Connection of 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).
3 Wire harness continuity.
4 Defective meter assembly.
5 Malfunction in ECU.
Fault code No. Err (meter display)
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Meter display
Procedure
Probable cause of malfunc-
Item
tion and check
89 (Yamaha diagnostic tool)
Multi-function meter: signals cannot be transmitted between the
ECU and the multi-function meter.
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
Improperly connected → Con-
nect the coupler securely or re-
place the wire harness.
Open or short circuit → Replace
the wire harness.
Between meter assembly cou-
pler and joint coupler.
blue/black–blue/black
blue/red–blue/red
Between joint coupler and ECU
coupler.
blue/black–blue/black
blue/red–blue/red
Replace the meter assembly.
Replace the ECU.
Refer to "REPLACING THE
ECU (engine control unit)" on
page 8-128.
Err (meter display)
Multi-function meter: signals cannot be transmitted between the
ECU and the multi-function meter.
Able to start engine
Able to drive vehicle
—
—
—
Maintenance job
8-70
FUEL INJECTION SYSTEM
Turn the main switch to "ON".
Fault code number is not dis-
played → Service is finished.
Fault code number is displayed
→ Go to item 2.
Turn the main switch to "ON".
Fault code number is not dis-
played → Service is finished.
Fault code number is displayed
→ Go to item 3.
Turn the main switch to "ON".
Fault code number is not dis-
played → Service is finished.
Fault code number is displayed
→ Go to item 4.
Turn the main switch to "ON".
Fault code number is not dis-
played → Service is finished.
Fault code number is displayed
→ Go to item 5.
Confirmation of service com-
pletion