Measuring The Ignition Coil Resistance; Measuring The Pickup Coil Resistance - Yamaha YZF-R7 Owner's Service Manual

3
1
2
IGNITION SYSTEM
MEASURING THE IGNITION COIL
RESISTANCE
The following procedure applies to all of
the ignition coils.
• Remove the ignition coil from the cylinder
head.
• Connect the pocket tester (
ignition coil as shown.
Tester positive probe
orange (cylinder #1) 1
gray (cylinder #2)
gray/green (cylinder #3)
orange/green (cylinder #4)
Tester negative probe
• Measure the primary coil resistance.
Primary coil resistance
0.16 ~ 0.21
• Connect the pocket tester (
ignition coil as shown.
• Measure the secondary coil resistance.
Tester positive probe
orange (cylinder #1) 1
gray (cylinder #2)
gray/green (cylinder #3)
orange/green (cylinder #4)
Tester negative probe
Secondary coil resistance
5.0 ~ 6.8 k at 20˚C (68˚F)
• Is the ignition coil OK?
Yes Good.
No Replace.
MEASURING THE PICKUP COIL
RESISTANCE
• Disconnect the pickup coil coupler from
the wire harness.
• Connect the pocket tester (
pickup coil coupler.
Tester positive probe
Tester negative probe
• Measure the pickup coil resistance.
Pickup coil resistance
421 ~ 569
(between gray and black)
• Is the pickup coil OK?
Yes Good.
No Replace.
8 - 10
– +
ELEC
1) to the
black 2
at 20˚C (68˚F)
1k) to the
ignition coil hole 3
100) to the
gray 1
black 2
at 20˚C (68˚ F)