Ignition System; Troubleshooting - Yamaha YZF-R6T Supplementary Service Manual

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
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. Ignition coil resistance
6. Crankshaft position sensor
7. Main switch
8. Engine stop switch
9. Neutral switch
10. Sidestand switch
11. Clutch switch
12. Starting circuit cut-off relay
13. Lean angle cut-off switch
14. Wiring connections
(of the entire ignition system)
NOTE:
S Before troubleshooting, remove the following
part(s):
1. seat
2. fuel tank
3. air filter case
4. bottom cowling
5. side cowlings
S Troubleshoot with the following special tool(s).
Dynamic spark tester
YM-34487
Ignition checker
90890-06754
Pocket tester
90890-03112, YU-3112
EAS00738
1. Main and ignition fuses
S Check the main and ignition fuses for conti-
nuity.
Refer to "CHECKING THE FUSES" in chap-
ter 3.
S Are the main and ignition fuses OK?
YES
email: info@motomatrix.co.uk
NO
Replace the fuse(s).
–20–

IGNITION SYSTEM

EAS00739
2. Battery
S 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)
S Is the battery OK?
YES
EAS00741
3. Spark plugs
The following procedure applies to all of the
spark plugs.
S Check the condition of the spark plug.
S Check the spark plug type.
S Measure the spark plug gap.
Refer to "CHECKING THE SPARK PLUGS"
in chapter 3.
Standard spark plug
CR9EK or CR10EK (NGK)
Spark plug gap
0.6 X 0.7 mm (0.0236 X 0.0276 in)
S Is the spark plug in good condition, is it of the
correct type, and is its gap within specifica-
tion?
YES
ELEC
NO
S Clean the battery
terminals.
S Recharge or re-
place the battery.
NO
Re-gap or replace
the spark plug.