Replacing The Ecu (Engine Control Unit) - Yamaha TMAX 2020 Service Manual

EAS30551
CHECKING THE FUSES
The following procedure applies to all of the fus-
es.
ECA25770
NOTICE
To avoid a short circuit, always push the
OFF/LOCK switch when checking or replac-
ing a fuse.
1. Remove:
• Front cover
Refer to "GENERAL CHASSIS (1)" on
page 4-1.
2. Check:
• Fuse
a. Connect the digital circuit tester to the fuse
and check the continuity.
TIP
Set the digital circuit tester selector to "  ".
Digital circuit tester (CD732)
90890-03243
Model 88 Multimeter with
tachometer
YU-A1927
b. If the digital circuit tester indicates "O.L",
replace the fuse.
3. Replace:
• Fuse (blown fuse)
a. Push the OFF/LOCK switch.
b. Install a new fuse of the correct amperage
rating.
c. Set on the switches to verify if the electrical
circuit is operational.
d. If the fuse immediately blows again, check
the electrical circuit.
Fuses
Main
Headlight
Taillight
Electronic throttle valve
Signaling system
Ignition
Radiator fan motor
Fuel injection system
ABS motor
Amper-
Q'ty
age rating
40 A 1
7.5 A 1
7.5 A 1
7.5 A 1
7.5 A 1
7.5 A 1
15 A 1
7.5 A 1
30 A 1
8-93
ELECTRICAL COMPONENTS
Fuses
ABS control unit
ABS solenoid
Backup
Auxiliary DC jack
Seat lock (for XP560E)
Windshield motor
(for XP560D)
Brake light (for XP560D)
Cruise control
(for XP560D)
Spare
Spare
Spare
Spare
Spare (for XP560D)
Spare
Spare
EWA13310
WARNING
Never use a fuse with an amperage rating
other than that specified. Improvising or us-
ing a fuse with the wrong amperage rating
may cause extensive damage to the electri-
cal system, cause the lighting and ignition
systems to malfunction and could possibly
cause a fire.
4. Install:
• Front cover
Refer to "GENERAL CHASSIS (1)" on
page 4-1.
EAS31006

REPLACING THE ECU (Engine Control Unit)

1. Push the ON/start switch (to OFF).
2. Replace the ECU (Engine Control Unit).
3. Clean the throttle bodies and reset the ISC
(Idle Speed Control) learning value.
Refer to "CHECKING AND CLEANING THE
THROTTLE BODIES" on page 7-10.
4. Check:
• Engine idling speed
Start the engine, warm it up, and then mea-
sure the engine idling speed.
Amper-
Q'ty
age rating
7.5 A 1
15 A 1
15 A 1
2 A 1
7.5 A 1
20 A 1
1 A 1
1 A 1
40 A 1
30 A 1
1 A 1
15 A 1
20 A 1
7.5 A 1
2 A 1