Checking The Vehicle Using The Yamaha Diagnostic Tool; Checking The Fuel Line (Primary Injector); Checking The Fuel Line (Secondary Injector) - Yamaha YZF-R1 2020 Service Manual

EAS32024
CHECKING THE VEHICLE USING THE
YAMAHA DIAGNOSTIC TOOL
Use the Yamaha diagnostic tool and check the
vehicle according to the following procedure.
1. Remove:
• Rider seat
• Battery cover
Refer to "GENERAL CHASSIS (1)" on page
4-1.
2. Remove the protective cap, and then connect
the Yamaha diagnostic tool to the coupler.
Yamaha diagnostic tool USB
90890-03267
Yamaha diagnostic tool (A/I)
90890-03264
TIP
• Yamaha diagnostic tool (A/I) (90890-03264) in-
cludes 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.
Refer to "YDT" on page 9-2.
3. Check:
• DTC
TIP
Use the "Diagnosis of malfunction" function of
the Yamaha diagnostic tool to check the DTC.
For information about using the Yamaha diag-
nostic tool, refer to the operation manual that is
included with the tool.
DTC number is displayed → Check and re-
pair the probable cause of the malfunction.
Refer to "SELF-DIAGNOSTIC FUNCTION
AND DIAGNOSTIC CODE TABLE" on page
9-40.
4. Perform:
• Dynamic inspection
TIP
Use the "Dynamic inspection" function of the
Yamaha diagnostic tool version 3.0 and after to
perform the dynamic inspection. For information
about using the Yamaha diagnostic tool, refer to
the operation manual that is included with the
tool.
5. Install:
• Rider seat
• Battery cover
Refer to "GENERAL CHASSIS (1)" on page
4-1.
PERIODIC MAINTENANCE
EAS30619
CHECKING THE FUEL LINE (Primary
injector)
The following procedure applies to all of the fuel,
drain and breather hoses.
1. Remove:
• Rider seat
Refer to "GENERAL CHASSIS (1)" on page
4-1.
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
2. Check:
• Fuel hose "1"
• Fuel tank drain hose "2"
• Fuel tank breather hose "3"
Cracks/damage → Replace.
Loose connection → Connect properly.
ECA14940
NOTICE
Make sure the fuel tank breather hose is rout-
ed correctly.
TIP
Before removing the fuel hoses, place a few
rags in the area under where it will be removed.
1
2
3. Install:
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
• Fuel tank cover
• Rider seat
Refer to "GENERAL CHASSIS (1)" on page
4-1.
EAS31633
CHECKING THE FUEL LINE (Secondary
injector)
1. Remove:
• Rider seat
Refer to "GENERAL CHASSIS (1)" on page
4-1.
• Fuel tank cover
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
3-4
3