Yamaha MZ250 Service Manual page 97

6. Ignition coil (TCI unit) resistance
9 Remove the ignition coil (TCI unit).
9 Connect the pocket tester (Ω × 1) to the
primary terminal.
1
Tester + lead → Black/White terminal 1
Tester - lead → Body ground 2
Primary coil resistance:
Refer to "SPECIFICATIONS" in
the Supplementary service
manual.
MEETS
SPECIFICATION
7. Ignition coil (TCI unit) resistance
9 Remove the ignition coil (TCI unit).
9 Connect the pocket tester (Ω × 1k) to the
secondary terminal.
2
1
Tester + lead → High-tension cord 1
Tester - lead → Black/White terminal 2
Secondary coil resistance:
Refer to "SPECIFICATIONS" in
the Supplementary service
manual.
MEETS
SPECIFICATION
IGNITION SYSTEM
2
OUT OF
SPECIFICATION
OUT OF
SPECIFICATION
5-8
Replace the TCI unit.
Replace the TCI unit.
ELEC