Yamaha MT-01 T 2005 Service Manual page 365

Fault code No. 29
Diagnostic code No.
Order Item/components and probable
cause
1 Installed state of decompression
solenoid.
2 Connections
• Decompression solenoid
(thermistor) coupler
• Main wire harness ECU coupler
3 Open or short circuit in wire harness.
4 Defective decompression solenoid
(thermistor).
Fault code No. 30
Diagnostic code No.
Order Item/components and probable
cause
1 The vehicle has overturned.
2 Installed condition of the lean angle
cut-off switch.
3 Connections
• Lean angle cut-off switch coupler
• Main wire harness ECU coupler
4 Defective lean angle cut-off switch.
Symptom Decompression solenoid (thermistor): open or short cir-
cuit detected.
55 Decompression solenoid
Symptom The vehicle has overturned.
08 Lean angle cut-off switch
FUEL INJECTION SYSTEM
Check or maintenance job
Check for looseness or pinching. Turning the
• Check the coupler for any pins
that may be pulled out.
• Check the locking condition of
the coupler.
• If there is a malfunction, repair it
and connect the coupler
securely.
• Repair or replace if there is an
open or short circuit.
• Between decompression
solenoid (thermistor) coupler
and ECU coupler
(green/red–green/red)
(black/blue–black/blue)
• Execute the diagnostic mode.
(Code No.55)
• Replace if defective.
Refer to "CHECKING THE
DECOMPRESSION
SOLENOID" on page 7-105.
Check or maintenance job
Raise the vehicle upright.
Check for looseness or pinching.
• Check the coupler for any pins
that may be pulled out.
• Check the locking condition of
the coupler.
• If there is a malfunction, repair it
and connect the coupler
securely.
• Execute the diagnostic mode.
(Code No.08)
• Replace if defective.
Refer to "CHECKING THE
LEAN ANGLE CUT-OFF
SWITCH" on page 7-100.
7-50
Reinstatement
method
main switch to
"ON".
Reinstatement
method
Turning the
main switch to
"ON" (however,
the engine
cannot be
restarted
unless the main
switch is first
turned "OFF").