Yamaha MT-03 Service Manual page 380

Radiator fan motor relay
1. Positive battery terminal
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
Result
Continuity
(between "3" and "4")
ET5YU1021
CHECKING THE TURN SIGNAL/HAZARD
RELAY
1. Check:
• Turn signal/hazard relay input voltage
Out of specification
the main switch to the turn signal/hazard re-
lay coupler is faulty and must be repaired.
Turn signal/hazard relay input
voltage
DC 12 V
a. Connect the pocket tester (DC 20 V) to the
turn signal/hazard relay terminal as shown.
Pocket tester
90890-03112
• Positive tester probe
• Negative tester probe
The wiring circuit from
brown "1"
ground
ELECTRICAL COMPONENTS
b. Turn the main switch to "ON".
c. Measure the turn signal/hazard relay input
voltage.
2. Check:
• Turn signal/hazard relay output voltage
Out of specification
Turn signal/hazard relay output
voltage
DC 12 V
a. Connect the pocket tester (DC 20 V) to the
turn signal/hazard relay terminal as shown.
Pocket tester
90890-03112
• Positive tester probe
• Negative tester probe
b. Turn the main switch to "ON".
c. Measure the turn signal/hazard relay output-
voltage.
EAS28050
CHECKING THE RELAY UNIT (DIODE)
1. Check:
• Relay unit (diode)
Out of specification
Pocket tester
90890-03112
NOTE:
The pocket tester and the analog pocket tester
readings are shown in the following table.
8-53
Replace.
brown/white "1"
ground
Replace.