9-3
SELF-DIAGNOSTIC FUNCTION
*1: The ABS warning light goes off when the vehicle is judged to normal with running.
EAS32806
YDT
This model uses the YDT to identify malfunctions.
For information about using the YDT, refer to the operation manual that is included with the tool.
• Yamaha diagnostic tool (A/I) (90890-03264) includes YDT sub harness (6P) (90890-03266).
• If you already have Yamaha diagnostic tool (A/I) (90890-03262), YDT sub harness (6P) (90890-
03266) is separately required.
• A GST can also be used to identify malfunctions.
Connecting the YDT
Remove the protective cap “1”, and then connect the YDT to the coupler.
EAS32864
PARTS CONNECTED TO THE ECU
The following parts are connected to the ECU.
When checking for a power short circuit, the couplers must be disconnected from all of the following
parts beforehand.
Yamaha diagnostic tool USB
90890-03267
Yamaha diagnostic tool (A/I)
90890-03264
• Crankshaft position sensor • Fuel pump
• Injector #1 • Lean angle sensor
• Injector #2 • ABS ECU (Electronic Control Unit)
• Ignition coil • Throttle servo motor
• Throttle position sensor • Starter relay
• Accelerator position sensor • Ignition system relay
• Intake air pressure sensor • Brake light relay
• Coolant temperature sensor • Radiator fan motor relay
• Intake air temperature sensor • Meter assembly
•O
2
sensor • Handlebar switch (left/right)
1
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