Yamaha 2005 BT1100 Supplementary Service Manual page 67

EAS00781
TROUBLESHOOTING
The immobilizer system fail to operate.
(The immobilizer system indicator light
starts to blinking the self-diagnosis code se-
quence.)
Check:
1. Main, ignition and backup fuses
2. Battery
3. Main switch
4. Wiring (of the entire immobilizer system)
NOTE:
• Before troubleshooting, remove the following
part(-s).
1) Seat
2) Side covers
3) Fuel tank (lift)
4) Cowling (lift forward)
5) Storage compartment/battery cover
• Troubleshoot with the following special tool(-s).
Pocket tester
90890-03112
EAS00738
1. Main, ignition and backup fuses
• Check the main, ignition and backup fuses
for continuity.
Refer to "CHECKING THE FUSES" in chap-
ter 3.
• Are the main, ignition and backup fuses OK?
YES NO
Replace the fuse(-s).
IMMOBILIZER SYSTEM
EAS00739
2. Battery
• Check the condition of the battery. Refer to
"CHECKING AND CHARGING THE BAT-
TERY" in chapter 3.
Open-circuit voltage
12.8 V or more at 20 °C
• Is the battery OK?
YES
EAS00749
3. Main switch
• Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES".
• Is the main switch OK?
YES
EAS00787
4. Wiring
• Check the entire immobilizer system's wiring.
Refer to "CIRCUIT DIAGRAM".
• Is the immobilizer system's wiring properly-
connected and without defects?
YES
Check the condition
of each of the immo-
bilizer system's cir-
cuits.
Refer to "CHECKING
THE IMMOBILIZER
SYSTEM".
59
ELEC
NO
• Clean the battery
terminals.
• Recharge or replace
the battery.
NO
Replace the main
switch.
NO
Properly connect or
repair the immobilizer
system's wiring.