Section 05
ELECTRICAL
Subsection 05
(IGNITION SYSTEM)
VMR2004_021_05_05A.FM
05-05-3
Battery Condition
A battery must be present in the vehicle to allow
the ignition system to work. Also, at least 8 V is re-
quired for proper operation. Check battery voltage.
Ignition switch
A quick test to validate it is working. Turn the igni-
tion switch ON then place the headlight switch in
ON position. If the headlight turn on, the ignition
switch is good.
Test
Disconnect ignition switch.
Measure voltage between RED supply wire and
the battery ground. If voltage is lower than battery
voltage, test the wiring. If voltage is good, test
switch.
Use a multimeter and measure the resistance be-
tween the following wires.
Replace switch if defective.
If switch is good, continue the next tests.
Trigger Coil Voltage Testing
NOTE:
The trigger coil is not adjustable.
STATIC TEST: CONTINUITY
Check resistance with a high-sensitivity ohmme-
ter.
1. Disconnect the Deutsch 2-pin connector. Refer
to OVERVIEW.
2. Connect multimeter probes to the GREEN/
YELLOW wire and to the BLUE wire.
3. Measure resistance; it should be between 190 -
300 ohms.
DYNAMIC TEST
1. Disconnect the Deutsch 2-pin connector.
2. Connect one of the multimeter probes to the
GREEN/YELLOW wire and the other to the en-
gine, then bring selector switch to
and scale
to 00.0
Vac
.
3. Press START button, note result. The obtained
value should be between 0.4 and 0.7 Vac. Re-
peat operation 3 times.
4. If the trigger coil is out of specification, replace
it. If it tests good continue the next tests.
Ignition Coil
NOTE:
An ignition coil with good resistance mea-
surement can still be faulty. Voltage leak can occur
at high voltage level which is not detectable with
an ohmmeter. Replacing the ignition coil may be
necessary as a test.
Primary Winding
Disconnect the wire connector on the primary side
of the ignition coil.
Using a multimeter, check the resistance between
the terminal and the ignition coil body ground.
The resistance should be between 0.2 and 0.5
Ω
at 20°C (68°F).
If not within specification, replace the ignition coil.
If the ignition coil test good, check the power sup-
ply on the electronic module.
There should be 12 Vdc between the RED/VIOLET
and BLACK/WHITE wires.
If there is no voltage, either the electronic module
or the wiring harness is defective.
Secondary Winding
Due to the integrated diode, it is not possible to
take any resistance measurement.
The output voltage should not be less than 12 kV
(12 000 V).
The ignition coil outlet caps and the spark plug
caps include a resistance. They should be checked
prior to replacing a suspected ignition coil.
Measure resistance between ignition coil termi-
nals and spark plug caps. The obtained value should
be between 6 and 13 K
Ω
. If resistance is good, con-
tinue check. If not, change spark plug wires.
DYNAMIC TEST
An ignition coil tester available from after-market
tool/equipment suppliers can be used.
CAUTION:
Do NOT use coil tester on metal work
bench. Follow manufacturer instructions.
If the ignition coil is out of specification, replace it.
If it tests good ensure the wiring and connectors
are in good condition then continue the next tests.
POSITION
WIRE
RESISTANCE
OFF
WHITE and
BROWN
Infinite (0.L)
ON
WHITE and
BROWN
0.6
Ω
max.
V
˜
Summary of Contents for DS 650
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Page 2: ...Shop Manual 2004 DS 650TM DS 650TM BAJA DS 650TM BAJA X ...
