Suzuki DF9,9 Service Manual page 54

IGNITION COIL RESISTANCE
 09930-99320: Digital tester
 Tester range: Ω (Resistance)
Primary side
1. Disconnect the ignition coil lead wire connector.
2. Connect the tester probe to the coil lead wires as shown.
Tester probe connection
Probe
Orange
Primary coil resistance: 0.2 – 0.4 Ω
If measurement is out of specification, replace the ignition coil.
Secondary side
1. Remove the spark plug caps from the high-tension cord.
2. Connect the tester probe to the high-tension cords as
shown.
Tester probe connection
Probe
High-tension cord
Secondary coil resistance: 6.8 – 10.2 kΩ
If measurement is out of specification, replace the ignition coil.
CDI UNIT OUTPUT
 09930-89920: 6 pin connector test cord
 Peak Voltmeter Stevens CD-77
Tester range: NEG 500
1. Disconnect 6 pin wire harness connector from CDI unit
2. Connect the 6 pin test cord between CDI unit and wire har-
ness as shown in figure.
3. Connect the tester probe to the test cord lead wires as
shown.
Tester probe connection
+ (Red)
Orange
{Test cord wire color: Black}
4. Remove all spark plugs.
5. Crank with the recoil starter, then measure voltage.
CDI unit output: 128 V or over
If measurement is out of specification, replace the CDI unit.
Other probe
Black
Other probe
Other High-tension cord
- (Black)
Engine body ground
IGNITION AND ELECTRICAL 3-7
B
O
CDI unit
Black