Yamaha YP250R 2005, Service Manual

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ELEC
IMMOBILIZER SYSTEM
EAS00794
TROUBLESHOOTING
Check:
1. main, ignition, CDI unit, and backup fuses
2. battery
3. main switch
4. wiring connections
(of the entire immobilizer system)
NOTE:
• Before troubleshooting, remove the following
part(s):
1. front cowling
2. storage compartment
• Troubleshoot with the following special
tool(s).
EAS00738
YES
NO
EAS00739
YES NO
EAS00749
YES
NO
EAS00787
YES
NO
When the main switch is turned “ON”,
the immobilizer system indicator light
does not come on or flash.
Pocket tester
90890-03112
1. Main, ignition, CDI unit, and backup fuses
• Check the main, ignition, CDI unit, and
backup fuses for continuity.
Refer to “CHECKING THE FUSES” in
chapter 3.
• Are the main, ignition, CDI unit, and
backup fuses OK?
Replace the fuse(s).
2. Battery
• Check the condition of the battery.
Refer to “CHECKING AND CHARGING
THE BATTERY” in chapter 3.
Minimum open-circuit voltage
12.8 V or more at 20 °C (68 °F)
• Is the battery OK?
• Clean the battery
terminals.
• Recharge or
replace the battery.
3. Main switch
• Check the main switch for continuity.
Refer to “CHECKING THE SWITCHES”.
• Is the main switch OK?
Replace the main
switch/immobilizer
antenna.
4. Wiring
• Check the entire immobilizer system wir-
ing.
Refer to “CIRCUIT DIAGRAM”.
• Is the immobilizer system wiring properly
connected and without defects?
Check the condition
of each of the immo-
bilizer system cir-
cuits.
Refer to “CHECK-
ING THE IMMOBI-
LIZER SYSTEM”. Properly connect or
repair the immobilizer
system wiring.