Troubleshooting - Yamaha TDM850 1996 Service Manual

TROUBLESHOOTING

IF IGNITION SYSTEM SHOULD BECOME INOPERATIVE (NO SPARK OR INTERMITTENT SPARK)
Procedure
Check:
1. Fuse (main and ignition)
2. Battery
3. Spark plug
4. Ignition spark gap
5. Spark plug cap resistance
6. Ignition coil resistance
7. Pickup coil resistance
NOTE:
S Remove the following parts before troubleshoot-
ing.
1) Seat
2) Side cowlings
3) Side covers
4) Fuel tank
5) Air filter case
S Use the following special tool(s) in this trouble-
shooting.
1. Fuse (main and ignition)
Refer to "SWITCH INSPECTION".
2. Battery
S Check the battery condition.
Refer to "BATTERY INSPECTION" in CHAP-
TER 3.
Open-circuit voltage:
12.8 V or more at 20_C
CONTINUITY
CORRECT
:
IGNITION SYSTEM
8. Main switch
9. Engine stop switch
10. Neutral switch
11. Sidestand switch
12. Wiring connection
(entire ignition system)
Ignition checker:
90890-06754
Pocket tester:
90890-03112
NO CONTINUITY
Replace fuse(s).
INCORRECT
S Clean battery terminals.
S Recharge or replace the battery.
8-5
ELEC