Troubleshooting - Yamaha 2007 XP500 Service Manual

EAS27140

TROUBLESHOOTING

The ignition system fails to operate (no spark or intermittent spark).
NOTE:
Before troubleshooting, remove the following part(s):
1.Battery cover
2.Rear cover
3.Front cowling
4.Leg shield
5.Footrest board
6.Inner fender
1. Check the fuses.
(Main and ignition)
Refer to "CHECKING THE FUSES" on
page 8-106.
OK↓
2. Check the battery.
Refer to "CHECKING AND CHARG-
ING THE BATTERY" on page 8-107.
OK↓
3. Check the spark plug.
Refer to "CHECKING THE SPARK
PLUGS" on page 3-9.
OK↓
4. Check the spark plug gap.
Refer to "CHECKING THE SPARK
PLUG GAP" on page 8-113.
NG↓
5. Check the spark plug cap.
Refer to "CHECKING THE SPARK
PLUG CAPS" on page 8-112.
OK↓
6. Check the ignition coils.
Refer to "CHECKING THE IGNITION
COIL" on page 8-113.
OK↓
7. Check the crankshaft position sensor.
Refer to "CHECKING THE CRANK-
SHAFT POSITION SENSOR" on page
8-114.
OK↓
8. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-101.
OK↓
9. Check the engine stop switch.
Refer to "CHECKING THE
SWITCHES" on page 8-101.
OK↓
NG→
Replace the fuse(s).
Clean the battery terminals.
G
NG→
Recharge or replace the battery.
G
NG→
Re-gap or replace the spark plug.
OK→
Ignition system is OK.
NG→
Replace the spark plug caps.
NG→
Replace the ignition coils.
NG→
Replace the crankshaft position sensor.
NG→
Replace the main switch.
NG→
Replace the right handlebar switch.
8-3
IGNITION SYSTEM