Suzuki LT-A400 Service Manual page 192

1H-4 Ignition System:
4) Connect the multi-circuit tester with the peak voltage
adaptor as follows:
CAUTION
!
Before using the multi-circuit tester and peak
voltage adaptor, refer to the appropriate
instruction manual.
NOTE
Do not disconnect the ignition coil lead
wires.
Special tool
: 09900–25008 (Multi-circuit tester set)
Tester knob indication: Voltage (
((+) Probe)
B/W lead wire
Ignition coil
terminal or ground
(+)
2
"B"
1
1. CDI unit
2. Peak voltage adaptor
3. New spark plug
4. Ignition coil
5) Measure the ignition coil primary peak voltage in the
following procedures:
a) Shift the transfer to the neutral, turn the ignition
switch ON.
b) Press the starter button and allow the engine to
crank for a few seconds, and then measure the
ignition coil primary peak voltage.
)
((–) Probe)
W/Bl lead wire
terminal
(–)
I827H1180002-01
"A"
4
3
5
I827H1180003-02
5. Battery
"A": (+) probe
"B": (–) probe
6) Repeat the b) procedure few times and measure the
highest peak voltage.
If the voltage is lower than standard range, inspect
the ignition coil and the CKP sensor.
Ignition coil primary peak voltage
180 V and more
7) After measuring the ignition coil primary peak
voltage, reinstall the removed parts.
Ignition Coil Resistance
1) Remove the left side cover. Refer to "Exterior Parts
Removal and Installation in Section 9D (Page 9D-
3)".
2) Disconnect the spark plug cap.
3) Disconnect the ignition coil lead wires.
4) Measure the ignition coil resistance in both the
primary and secondary coils. If the resistance is not
within the standard range, replace the ignition coil
with a new one.
Special tool
: 09900–25008 (Multi-circuit tester set)
Tester knob indication
Resistance (Ω)
Ignition coil resistance
Primary: 0.1 – 1.0 Ω ((+) terminal – (–) terminal)
Secondary: 12 – 22 kΩ (Spark plug cap – (+)
terminal)
(–)
5) After measuring the ignition coil resistance, reinstall
the removed parts.
( )
I827H1180004-01