Checking The Lighting System - Yamaha XV1700PCRC Service Manual

5. Headlight relay
• Remove the headlight relay from the wire
harness.
• Connect the pocket tester (Ω × 1) and bat-
tery (12 V) to the headlight relay terminal
as shown.
• Check the headlight relay for continuity.
Positive battery terminal → red/yellow 1
Negative battery terminal →
Positive tester probe → red/yellow 3
Negative tester probe → green/blue 4
3
4
2
1
Y/B R/Y
G/L
R/Y
• Does the headlight relay have continuity
between red/yellow and green/blue?
YES
EAS00787
6. Wiring
• Check the entire lighting system's wiring.
Refer to "CIRCUIT DIAGRAM".
• Is the lighting system's wiring properly
connected and without defects?
YES
Check the condition
of each of the lighting
system's circuits.
Refer to "CHECK-
ING THE LIGHTING
SYSTEM".
yellow/black 2
+
NO
Replace the head-
light relay.
NO
Properly connect or
repair the lighting
system's wiring.
7 - 40
LIGHTING SYSTEM
EAS00788

CHECKING THE LIGHTING SYSTEM

1. The headlight and the high beam indicator
light fail to come on.
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?
YES
2. High beam indicator light LED
• Check the LED of the high beam indicator
light.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS".
• Are the high beam indicator light LED OK?
YES
3. Voltage
• Connect the pocket tester (DC 20 V) to the
headlight and speedometer assembly cou-
plers as shown.
È When the dimmer switch is set to "
É When the dimmer switch is set to "
Headlight coupler
– +
ELEC
NO
Replace the head-
light bulb, socket or
both.
NO
Replace the speed-
ometer assembly.
"
"