Yamaha SR400 2014, Service Manual

Page: 294 / 342

FUEL INJECTION SYSTEM
7-37
2 Open or short circuit in wire harness. • Repair or replace if there is an open or short
circuit.
• Between lean angle sensor coupler and ECU
coupler.
L–L (blue–blue)
Y/G–Y/G (yellow/green–yellow/green)
B/L–B/L (black/blue–black/blue)
3 Defective lean angle sensor.
•
Execute diagnostic code No. D08.
• Replace if defective.
Refer to “CHECKING THE LEAN ANGLE
SENSOR” on page 7-67.
Reinstatement method Turn the main switch to “ON”.
Fault code No. 42
Item
Speed sensor: no normal signals are received from the speed
sensor.
Fail-safe system
Able to start engine
Able to drive vehicle
Diagnostic code No.
D07
FI diagnostic tool display
Vehicle speed pulse
0–999
Procedure
Check that the number increases when the front wheel is rotated.
The number is cumulative and does not reset each time the wheel
is stopped.
Probable cause of malfunction Check or maintenance job
1 Connections
•
Speed sensor coupler
• Wire harness ECU coupler
•
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.
2 Open or short circuit in wire harness. • Repair or replace if there is an open or short
circuit.
• Between speed sensor coupler and ECU
coupler.
W–W (white–white)
3 Defective speed sensor.
•
Execute diagnostic code No. D07.
• Replace if defective.
Refer to “CHECKING THE SPEED SEN-
SOR” on page 7-70.
Reinstatement method Start the engine and run the vehicle at 20 to 30 km/h.
Fault code No. 41
Item Lean angle sensor: open or short circuit detected.