Yamaha TDM850 1996 Service Manual page 283

S Check the spark plug cap for specified resis-
tance.
Spark plug cap resistance:
10 kΩ at 20_C
6. Ignition coil resistance
S Disconnect the ignition coil connector from the
wire harness.
S Connect the pocket tester (Ω
tion coil.
S Check the primary coil for specified resistance.
Primary coil resistance:
3.4 X 4.6 Ω at 20_C
S Connect the pocket tester (Ω
tion coil.
S Check the secondary coil for specified resis-
tance.
Secondary coil resistance:
10.4 X 15.6 kΩ at 20_C
MEETS
SPECIFICATION
1) to the igni-
1k) to the igni-
BOTH MEET
SPECIFICATION
:
IGNITION SYSTEM
OUT OF SPECIFICATION
Replace spark plug cap.
Tester (+) lead ! Red/Black terminal
Tester (–) lead ! Orange (Gray) terminal
Tester (+) lead ! Spark plug lead
Tester (–) lead ! Red/Black terminal
OUT OF SPECIFICATION
Replace ignition coil.
8-7
ELEC
1
2
1
2