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FUEL INJECTION SYSTEM
8-30
1
Connection of intake air pres-
sure sensor coupler.
Check the locking condition of
the coupler.
Disconnect the coupler, and
check the pins (for bent or bro-
ken terminals and locking condi-
tion of the pins).
Improperly connected
Con-
nect the coupler securely, or
repair/replace the wire harness.
Start switch to ON (main relay
ON), and then check the condi-
tion of the fault code using the
malfunction mode of the
Yamaha diagnostic tool.
Condition is “Recovered”
Go
to item 7 and finish the service.
Condition is “Detected”
Go to
item 2.
2
Connection of wire harness
ECU coupler.
Check the locking condition of
the coupler.
Disconnect the coupler, and
check the pins (for bent or bro-
ken terminals and locking condi-
tion of the pins).
Improperly connected
Con-
nect the coupler securely, or
repair/replace the wire harness.
Start switch to ON (main relay
ON), and then check the condi-
tion of the fault code using the
malfunction mode of the
Yamaha diagnostic tool.
Condition is “Recovered”
Go
to item 7 and finish the service.
Condition is “Detected”
Go to
item 3.
3
Wire harness continuity.
Open or short circuit
Replace
the wire harness.
Between intake air pressure
sensor coupler and ECU cou-
pler.
pink/black–pink/black
blue–blue
black/blue–black/blue
Start switch to ON (main relay
ON), and then check the condi-
tion of the fault code using the
malfunction mode of the
Yamaha diagnostic tool.
Condition is “Recovered”
Go
to item 7 and finish the service.
Condition is “Detected”
Go to
item 4.
4
Mounted condition of intake air
pressure sensor.
Check for looseness or pinch-
ing.
Check the mounted position for
correctness.
Improperly mounted sensor
Remount or replace the sensor.
Start switch to ON (main relay
ON), and then check the condi-
tion of the fault code using the
malfunction mode of the
Yamaha diagnostic tool.
Condition is “Recovered”
Go
to item 7 and finish the service.
Condition is “Detected”
Go to
item 5.
5
Defective intake air pressure
sensor.
Execute the diagnostic mode.
(Code No. 03)
Atmospheric pressure at the
current altitude and weather
conditions is indicated.
0 m above sea level: About 101
kPa (about 3.63 V)
1000 m above sea level: About
90 kPa (about 3.30 V)
2000 m above sea level: About
80 kPa (about 3.00 V)
3000 m above sea level: About
70 kPa (about 2.70 V)
Start switch to ON (main relay
ON), and then check the condi-
tion of the fault code using the
malfunction mode of the
Yamaha diagnostic tool.
Condition is “Recovered”
Go
to item 7 and finish the service.
Condition is “Detected”
Go to
item 6.
6
Faulty ECU.
Replace the ECU.
Service is finished.
7
Delete the fault code.
Confirm that the fault code has
a condition of “Recovered”
using the Yamaha diagnostic
tool, and then delete the fault
code.
Fault code No.
13
Item
Intake air pressure sensor: open or short circuit detected.
Summary of Contents for YZ450FX 2019
Page 7: ...EAM20162 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY ...
Page 10: ......
Page 12: ......
Page 63: ...LUBRICATION POINTS AND LUBRICANT TYPES 2 20 ...
Page 66: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 23 ...
Page 68: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 25 ...
Page 69: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 26 1 Connecting rod 2 Oil nozzle 3 Crankshaft ...
Page 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 27 ...
Page 72: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29 ...
Page 73: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 30 1 Oil filter element 2 Oil pump 3 Oil strainer ...
Page 74: ...CABLE ROUTING DIAGRAM 2 31 EAM20152 CABLE ROUTING DIAGRAM ...
Page 76: ...CABLE ROUTING DIAGRAM 2 33 ...
Page 78: ...CABLE ROUTING DIAGRAM 2 35 ...
Page 80: ...CABLE ROUTING DIAGRAM 2 37 ...
Page 82: ...CABLE ROUTING DIAGRAM 2 39 ...
Page 84: ...CABLE ROUTING DIAGRAM 2 41 ...
Page 86: ...CABLE ROUTING DIAGRAM 2 43 ...
Page 126: ...ELECTRICAL SYSTEM 3 38 ...
Page 178: ...FRONT FORK 4 50 1 ...
Page 196: ...CHAIN DRIVE 4 68 ...
Page 274: ...TRANSMISSION 5 75 ...
Page 282: ...WATER PUMP 6 7 ...
Page 295: ......
Page 296: ...IGNITION SYSTEM 8 1 EAM20142 IGNITION SYSTEM EAM30277 CIRCUIT DIAGRAM ...
Page 300: ...ELECTRIC STARTING SYSTEM 8 5 EAM20143 ELECTRIC STARTING SYSTEM EAM30279 CIRCUIT DIAGRAM ...
Page 304: ...CHARGING SYSTEM 8 9 EAM20144 CHARGING SYSTEM EAM30282 CIRCUIT DIAGRAM ...
Page 307: ...CHARGING SYSTEM 8 12 ...
Page 308: ...SIGNALING SYSTEM 8 13 EAM20154 SIGNALING SYSTEM EAM30348 CIRCUIT DIAGRAM ...
Page 312: ...COOLING SYSTEM For JPN 8 17 EAM20155 COOLING SYSTEM For JPN EAM30350 CIRCUIT DIAGRAM ...
Page 315: ...COOLING SYSTEM For JPN 8 20 ...
Page 316: ...FUEL INJECTION SYSTEM 8 21 EAM20145 FUEL INJECTION SYSTEM EAM30284 CIRCUIT DIAGRAM ...
Page 341: ...FUEL INJECTION SYSTEM 8 46 ...
Page 342: ...FUEL PUMP SYSTEM 8 47 EAM20146 FUEL PUMP SYSTEM EAM30287 CIRCUIT DIAGRAM ...
Page 345: ...FUEL PUMP SYSTEM 8 50 ...
Page 346: ...ELECTRICAL COMPONENTS 8 51 EAM20147 ELECTRICAL COMPONENTS 1 2 3 4 6 7 8 9 5 ...
Page 348: ...ELECTRICAL COMPONENTS 8 53 1 2 3 4 5 11 10 6 7 8 9 ...
Page 372: ...LIST OF SELF DIAGNOSTIC AND FAIL SAFE ACTIONS 9 7 ...
Page 382: ...CHASSIS 10 9 ...
Page 384: ......
Page 387: ...YZ450FXK 2019 WIRING DIAGRAM B3J 28199 10_W D indd 1 2018 04 18 11 44 57 ...
Page 388: ...YZ450FXK 2019 WIRING DIAGRAM B3J 28199 10_W D indd 2 2018 04 18 11 44 57 ...