Yamaha XT660R Service Manual page 443

2. The multifunction display is not indicated.
1. Voltage
• Connect the pocket tester (DC 20 V) to the
meter assembly couplers as shown.
Ch R/G Y
Dg G/L R/W
G G/L R/W
Ch R/G Y
Positive tester probe →
red/green 1 and red/white 3
Negative tester probe → black/white 2
• Turn the main switch to "ON".
• Measure the voltage (DC 12 V) meter
assembly couplers (wire harness end).
• Is the voltage within specification?
YES
Replace the meter
assembly.
IMMOBILIZER SYSTEM
G/W Y/L
B/W Lg
B/W Lg
G/W Y/L
NO
The wiring circuit
from the main switch
to the meter assem-
bly couplers is faulty
and must be
repaired.
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