Checking The Immobilizer System - Yamaha XT660R 2004 Service Manual

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CHECKING THE IMMOBILIZER SYSTEM

1. Immobilizer system indicator light does not
go on when the main switch is set to "ON".
1. Immobilizer system indicator light LED
• Check the LED of the immobilizer system
indicator light.
Refer to "CHECKING THE BULBS AND
BULB SOCKETS".
• Is the immobilizer system indicator light
LED OK?
YES
2. Voltage
• Connect the pocket tester (DC 20 V) to the
meter assembly couplers as shown.
Positive tester probe → green/blue 1
Negative tester probe → black/white 2
• Set the main switch to "ON".
• Measure the voltage (2.6 V) between
green/blue and black/white on the meter
assembly couplers.
• Is the voltage within specification?
YES
Replace the meter
assembly.
email: info@motomatrix.co.uk
IMMOBILIZER SYSTEM
NO
Replace the meter
assembly.
NO
8 - 59
3. Voltage
• Connect the pocket tester (DC 20 V) to the
immobilizer unit coupler as shown.
Positive tester probe → red/green 1
Negative tester probe → black 2
2 1
B BB
R/G
Y/L G/L R/W
• Set the main switch to "ON".
• Measure the voltage (12 V) between red/
green and black on the immobilizer unit
coupler.
• Is the voltage within specification?
YES
– +
ELEC
R/G B2
B
R/W Lg Y/L
NO
The wiring circuit
from the battery to
the immobilizer unit
is faulty and must be
repaired.