Troubleshooting - Yamaha XV1700P Service Manual

EAS00737

TROUBLESHOOTING

The ignition system fails to operate (no
spark or intermittent spark).
Check:
1. main and ignition fuses
2. battery
3. spark plugs
4. ignition spark gap
5. spark plug cap resistance
6. ignition coil resistance
7. crankshaft position sensor resistance
8. main switch
9. engine stop switch
10.neutral switch
11.sidestand switch
12.lean angle cut-off switch voltage
13.relay unit (diode)
14.wiring connections
(of the entire ignition system)
NOTE:
_
• Before troubleshooting, remove the following
part(s):
1. seat
2. fuel tank
3. silencer air filter case
4. side covers
5. ignition coils
6. headlight lens unit
7. horn 2
• Troubleshoot with the following special
tool(s).
Dynamic spark tester
YM-34487
Pocket tester
YU-03112
IGNITION SYSTEM
EAS00738
1. Main and ignition fuses
• Check the main and ignition fuses for con-
tinuity.
Refer to "CHECKING THE FUSES" in
chapter 3.
• Are the main and ignition fuses OK?
YES
EAS00739
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?
YES
EAS00741
3. Spark plugs
The following procedure applies to all of the
spark plugs.
• Check the condition of the spark plug.
• Check the spark plug type.
• Measure the spark plug gap.
Refer to "CHECKING
PLUGS" in chapter 3.
Standard spark plug
DPR7EA-9 (NGK)
X22EPR-U9 (DENSO)
Spark plug gap
0.8 ~ 0.9 mm (0.0315 ~ 0.0354 in)
7 - 17
– +
ELEC
NO
Replace the fuse(s).
NO
• Clean the battery
terminals.
• Recharge or
replace the battery.
THE SPARK