Yamaha 2003 YFZ450S, Руководство по обслуживанию

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ELEC
LIGHTING SYSTEM
EBS01069
YES
NO
EBS01070
CHECKING THE LIGHTING SYSTEM
1. The headlights fail to come on.
YES
NO
YES
NO
3. Wiring
• Check the entire lighting system’s wiring.
Refer to “CIRCUIT DIAGRAM”.
• Is the lighting system’s wiring properly
connected and without defects?
Check the condition
of each of the lighting
system’s circuits.
Refer to “CHECK-
ING THE LIGHTING
SYSTEM”. Properly connect or
repair the lighting
system’s wiring.
1. Headlight bulb and socket
• Check the headlight bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
• Are the headlight bulb and socket OK?
Replace the head-
light bulb, socket or
both.
2. Voltage
• Connect the pocket tester (AC 20 V) to the
headlight couplers as shown.
È
When the light switch is set to “LO”
É
When the light switch is set to “HI”
Headlight coupler (wire harness side)
Headlight
Positive tester probe
→
yellow
1
or green
2
Negative tester probe
→
black
3
• Set the main switch to “ON”.
• Start the engine.
• Set the light switch to “LO” or “HI”.
• Measure the voltage (AC 12 V) of yellow
1
or green
2
on the headlight coupler
(wire harness side).
• Is the voltage within specification?
This circuit is OK. Replace the rectifier/
regulator.
AC20V
G Y
B
1
3
2
È
É