Yamaha Mt 01 T 2005 Manual

ELECTRICAL COMPONENTS
7-86
1. Air temperature sensor
2. Cylinder-#2 left ignition coil
3. Cylinder-#2 right ignition coil
4. ISC (idle speed control) unit
5. Intake solenoid
6. Cylinder-#1 right ignition coil
7. Cylinder-#1 left ignition coil
8. Muffler cooling fan temperature sensor
9. Muffler cooling fan motor
10.Speed sensor
11.Rear brake light switch
12.Neutral switch
13.Decompression solenoid
14.Rectifier/regulator
15.Horn 

ELECTRICAL COMPONENTS
7-87
346
5
8 7
9
11
12
13
14
15
16 17 18 12
10 

ELECTRICAL COMPONENTS
7-88
1. Cylinder-#1 intake air pressure sensor
2. Cylinder-#2 intake air pressure sensor
3. Immobilizer unit
4. Throttle position sensor
5. Main fuse
6. Fuse box
7. Muffler cooling fan motor relay
8. ECU (electronic control unit)
9. Headlight relay
10.Relay unit
11.Turn signal/hazard relay
12.Fuel injection system fuse
13.Starter relay
14.Lean angle cut-off switch
15.Battery
16.EXUP servo motor
17.Crankshaft position sensor
18.Engine temperature sensor 

ELECTRICAL COMPONENTS
7-89
EAS27980CHECKING THE SWITCHES
Br/WBL/B
R/Y
B/YPGY
BDg
Ch
B
B
(BLACK)
R/WL/W
R/B B
B/Y
B
(BLUE)
(BROWN)
B
B
(BLUE)
B
B
B
B
B
11
12
1385
6
9
10 1
2
7 3BB
R/YY
YL/BG
DgBr/WCh
DgBr/WCh
PB/Y
BB
R/WR/B
L/WB/YR
Br/L
Br/R4
RBr/LBr/RON
OFFL/WB/Y 

ELECTRICAL COMPONENTS
7-90
1. Front brake light switch
2. Engine stop switch
3. Start switch
4. Main switch
5. Neutral switch
6. Sidestand switch
7. Rear brake light switch
8. Hazard switch
9. Turn signal switch
10.Horn switch
11.Clutch switch
12.Pass switch
13.Dimmer switch 

ELECTRICAL COMPONENTS
7-91
Check each switch for continuity with the pocket tester. If the continuity reading is incorrect, check the 
wiring connections and if necessary, replace the switch.
CAUTION:
ECA14370
Never insert the tester probes into the coupler terminal slots “a”. Always insert the probes from 
the opposite end of the coupler, taking care not to loosen or damage the leads.
NOTE:
Before checking for continuity, set the pocket tester to “0” and to the “Ω × 1” range.
When checking for...

ELECTRICAL COMPONENTS
7-92
EAS27990CHECKING THE BULBS AND BULB 
SOCKETS
NOTE:
Do not check any of the lights that use LEDs.
Check each bulb and bulb socket for damage or 
wear, proper connections, and also for continuity 
between the terminals.
Damage/wear → Repair or replace the bulb, 
bulb socket or both.
Improperly connected → Properly connect.
No continuity → Repair or replace the bulb, bulb 
socket or both.
Types of bulbs
The bulbs used on this vehicle are shown in the 
following illustration....

ELECTRICAL COMPONENTS
7-93
Checking the condition of the bulb sockets
The following procedure applies to all of the bulb 
sockets.
1. Check:
Bulb socket (for continuity)
(with the pocket tester)
No continuity → Replace.
NOTE:
Check each bulb socket for continuity in the 
same manner as described in the bulb section; 
however, note the following.



 





 
 








 
 



 
 



 



a. Install a good bulb into the bulb socket.
b. Connect the pocket tester probes to the re-
spective leads of the bulb...

ELECTRICAL COMPONENTS
7-94
cal system, cause the lighting and ignition 
systems to malfunction and could possibly 
cause a fire.
        
4. Install:
Lead holder
Seat
Refer to “GENERAL CHASSIS” on page 4-1.
EAS28030
CHECKING AND CHARGING THE BATTERY
WARNING
EWA13290
Batteries generate explosive hydrogen gas 
and contain electrolyte which is made of poi-
sonous and highly caustic sulfuric acid. 
Therefore, always follow these preventive 
measures:
Wear protective eye...

ELECTRICAL COMPONENTS
7-95
b. Check the charge of the battery, as shown in 
the charts and the following example.
        
5. Charge:
Battery
(refer to the appropriate charging method)
WARNING
EWA13300
Do not quick charge a battery.
CAUTION:
ECA13670
Never remove the MF battery sealing caps.
Do not use a high-rate battery charger 
since it forces a high-amperage current 
into the battery quickly and can cause bat-
tery overheating and battery plate damage.
If it is...