Yamaha 2012 TMAX XP500A Service Manual page 378

EAS27140
TROUBLESHOOTING
The ignition system fails to operate (no spark or intermittent spark).
TIP
• Before troubleshooting, remove the following part(s):
1. Footboards
2. Front cowling assembly
1. Check the fuses.
(Main and ignition)
Refer to "CHECKING THE FUSES"
on page 8-127.
OK↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-127.
OK↓
3. Check the spark plugs.
Refer to "CHECKING THE SPARK
PLUGS" on page 3-4.
OK↓
4. Check the ignition spark gap.
Refer to "CHECKING THE IGNI-
TION SPARK GAP" on page 8-135.
NG↓
5. Check the spark plug caps.
Refer to "CHECKING THE SPARK
PLUG CAPS" on page 8-134.
OK↓
6. Check the ignition coil.
Refer to "CHECKING THE IGNI-
TION COIL" on page 8-134.
OK↓
7. Check the crankshaft position sen-
sor.
Refer to "CHECKING THE
CRANKSHAFT POSITION SEN-
SOR" on page 8-135.
OK↓
NG→
Replace the fuse(s).
NG→
• Clean the battery terminals.
• Recharge or replace the battery.
NG→
Re-gap or replace the spark plugs.
OK→
Ignition system is OK.
NG→
Replace the spark plug caps.
NG→
Replace the ignition coil.
NG→
Replace the crankshaft position sen-
sor/stator assembly.
8-3
IGNITION SYSTEM