Yamaha YP125R Service Manual

ELECTRICAL COMPONENTS
8-81
Starting circuit cut-off relay
Starter relay
Headlight relay
Radiator fan motor relay
EAS37P1082
CHECKING THE TURN SIGNAL/HAZARD
RELAY
1. Check:
• Turn signal/hazard relay input voltage
Out of specification → The wiring circuit from
the main switch to the turn signal/hazard re-
lay coupler is faulty and must be repaired.
▼▼▼▼▼▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼▼▼
a. Connect the pocket tester (DC 20 V) to the
turn signal/hazard relay terminal as shown.
1. Positive battery terminal
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
Result
Continuity
(between “3” and “4”)
1. Positive battery terminal
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
Result
Continuity
(between “3” and “4”)
1. Positive battery terminal
W/Y
L/Y
G/Y
R/B
+
1
2
4
3
R
R
L/W
R
B
12
4
3
+
R/Y
L/ B
R/Y
W/ B
1
2
3
4
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
Result
Continuity
(between “3” and “4”)
1. Positive battery terminal
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
Result
Continuity
(between “3” and “4”)
Turn signal/hazard relay input
voltage
DC 12 V
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
brown/red “1”
• Negative tester probe →
ground
+
R/W
L
R/B
G/B
1
2
3
4

Yamaha YP125R Specifications

General

Engine Type	Liquid-cooled, 4-stroke, SOHC, 4-valve
Bore x Stroke	52.4 mm x 57.9 mm
Fuel System	Fuel Injection
Ignition System	TCI
Transmission	V-Belt Automatic
Front Suspension	Telescopic fork
Rear Suspension	Unit Swing
Front Brake	Hydraulic single disc, Ø267 mm
Starter System	Electric
Rear Tyre	140/70-14M/C 62P (Tubeless)