Yamaha TMAX XP530E-A 2017 Service Manual page 489

Fault code No.
Item
3 Wire harness continuity.
4 Defective fuel injection system
relay.
5 Defective fuel injection system
relay.
6 Malfunction in ECU.
7 Delete the fault code and check
that the engine trouble warning
light goes off.
P0657
Fuel system voltage: incorrect voltage supplied to the fuel injector
and fuel pump.
Open or short circuit  Replace
the wire harness.
Between starter relay and igni-
tion system relay coupler.
red–red
Between ignition system relay
coupler and remote control unit
coupler.
yellow/blue–yellow/blue
Between ignition system relay
coupler and ignition fuse.
brown/blue–brown/blue
Between ignition fuse and han-
dlebar switch (right) coupler.
red/white–red/white
Between handlebar switch
(right) coupler and fuel injection
system relay coupler.
red/black–red/black
Between starter relay and fuel
injection system fuse.
red–red
Between fuel injection system
fuse and fuel injection system
relay coupler.
red–red
Between fuel injection system
relay coupler and ECU coupler.
red/blue–red/blue
blue/yellow–blue/yellow
Execute the diagnostic mode.
(Code No. 50)
No operating sound  Replace
the fuel injection system relay
and ignition system relay.
Execute the diagnostic mode.
(Code No. 09)
Fuel system voltage is below 3
V  Replace the fuel injection
system relay and ignition sys-
tem relay.
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-230.
Confirm that the fault code has
a condition of "Recovered"
using the Yamaha diagnostic
tool, and then delete the fault
code.
8-98
FUEL INJECTION SYSTEM
Start the engine and let it idle for
approximately 5 seconds.
Check the condition 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.
Start the engine and let it idle for
approximately 5 seconds.
Check the condition 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.
Start the engine and let it idle for
approximately 5 seconds.
Check the condition 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.
Service is finished.