Yamaha SR400 2014 Service Manual page 287

Fault code No.
Item
Reinstatement method
Fault code No.
Item
Fail-safe system
Diagnostic code No.
FI diagnostic tool display
Procedure
Probable cause of malfunction
1 Installed condition of throttle position
sensor.
2 Connections
• Throttle position sensor coupler
• Wire harness ECU coupler
• Sub-wire harness coupler
3 Open or short circuit in wire harness
and/or sub-wire harness.
4 Defective throttle position sensor.
Reinstatement method
Fault code No.
Item
Fail-safe system
Diagnostic code No.
14
Intake air pressure sensor: hose system malfunction
(clogged or detached hose).
Start the engine and let it run at idle.
15
Throttle position sensor: open or short circuit detected.
Able to start engine
Able to drive vehicle
D01
Throttle angle
• 14–20 (fully closed position)
• 79–85 (fully open position)
• Check with throttle fully closed.
• Check with throttle fully open.
• Check for looseness or pinching.
• Check that the sensor is installed in the spec-
• Check the coupler for any pins that may be
• Check the locking condition of the coupler.
• If there is a malfunction, repair it and connect
• Repair or replace if there is an open or short
• Between throttle position sensor coupler and
• Execute diagnostic code No. D01.
• Replace if defective.
Turn the main switch to "ON".
16
Throttle position sensor: stuck throttle position sensor
detected.
Able to start engine
Able to drive vehicle
D01
7-30
FUEL INJECTION SYSTEM
Check or maintenance job
ified position.
pulled out.
the coupler securely.
circuit.
ECU coupler.
L–L (blue–blue)
B/L–B/L (black/blue–black/blue)
Y–Y (yellow–yellow)
Refer to "CHECKING THE THROTTLE
POSITION SENSOR" on page 7-70.