J
Hey guys i don't have any spark. I have replaced the stator and the spark coil and still no spark. Any one have any other ideas. I was hoping to catch the last little bit of snow.
Help no Spark
- Thread starter jjacobs
- Start date
this is for 07..but still may help
Troubleshooting
Ignition System
(EFI Models)
When troubleshooting the standard “normally open”
ignition system, use the following procedure.
1. Remove the spark plugs and visually check their
condition. Replace any fouled plug. Attach the
spark plugs to the high tension leads and ground
them on the cylinder heads.
��NOTE: Make sure the ignition switch and the
emergency stop switch are in the ON position.
2. Crank the engine over and check for spark. If no
spark is present, check to make sure the throttle
cable is properly tensioned. Compress the throttle
control and while holding the throttle control in
this position, crank the engine over and check for
spark. If spark is now present, adjust the throttle
cable tension.
3. If no spark is present, disconnect the main wiring
harness from the engine. Crank the engine over. If
spark is present, the problem is either one or more
of the following:
A. Defective emergency stop switch
B. Defective safety switch in throttle-control
housing
C. Corroded or loose wire connection at the throttle-
control housing or main wiring harness
D. Defective ignition switch
��NOTE: To check these possible causes, proceed
to Testing Ignition System.
Testing Ignition System
(EFI Models)
��NOTE: There must be free-play between the
throttle lever and the control housing.
MAIN WIRING AND SAFETY
SWITCHES
1. Check the wiring connections coming from the
ignition key and emergency stop switches. The
throttle control switch connector is located on the
front side of the steering post. If any of the connections
appear dirty or corroded, clean them with
fine sandpaper and compressed air; then connect
all wires and squeeze the connections with a pliers
for additional tightness.
2. Disconnect the main wiring harness connector
coming from the engine stator assembly. Disconnecting
this connector will bypass the main wiring
harness and all switches which will not allow the
engine to be shut off without first installing an
additional auxiliary ground wire.
3. Insert an auxiliary ground wire into the black wire
of the four-wire main harness connector on the
engine side. To stop the engine once it has been
started, touch the auxiliary ground wire to the
engine.
4. Support the rear of the snowmobile up on a
shielded safety stand; then set the brake lever lock.
Inspect the complete throttle mechanism to assure
that it's working properly.
5. Attempt to start the engine. To stop the engine (if
the engine starts), touch the auxiliary ground wire
installed into the four-wire connector to a ground
on the engine. If the engine fails to start, the problem
is with the coils mounted on the engine, high
tension coil assembly, or the ECU. If the engine
starts, the problem is with the switches, main wiring
harness, or throttle cable free-play
IGNITION KEY SWITCH
1. Disconnect the ignition key switch connectors;
then connect the ohmmeter leads to each of the
ignition key switch terminals
2. With the switch in the OFF position, the meter
must read less than 1 ohm of resistance.
3. With the switch in the ON position, the meter must
read OL (infinite resistance).
THROTTLE CONTROL SWITCH
1. Verify that the throttle cable has free-play between
the throttle lever and control housing.
2. Disconnect the throttle control switch connector;
then connect one ohmmeter lead to the brown wire
and the other lead to the black/white wire of the
emergency stop switch.
3. With the throttle lever in the idle position and the
emergency stop knob in the up (RUN) position,
the meter must read no resistance (open). If the
meter reads resistance (closed), replace the switch.
4. With the throttle lever in the idle position and the
emergency stop knob in the down (STOP) position,
the meter must read resistance (closed). If the
meter reads no resistance (open), replace the
switch. With the emergency stop knob still in the
down (STOP) position, move the throttle lever to
the wide open position. The meter must read no
resistance (open). If the meter reads resistance
(closed), replace the switch.
5. Connect one ohmmeter lead to the brown wire and
the other lead to the violet wire. With the emergency
stop knob in the down (STOP) position, the
meter must read resistance (closed). If the meter
reads no resistance (open), replace the switch.
With the emergency stop knob in the up (RUN)
position, the meter must read no resistance (open).
If the meter reads resistance (closed), replace the
switch.
Troubleshooting
Ignition System
(EFI Models)
When troubleshooting the standard “normally open”
ignition system, use the following procedure.
1. Remove the spark plugs and visually check their
condition. Replace any fouled plug. Attach the
spark plugs to the high tension leads and ground
them on the cylinder heads.
��NOTE: Make sure the ignition switch and the
emergency stop switch are in the ON position.
2. Crank the engine over and check for spark. If no
spark is present, check to make sure the throttle
cable is properly tensioned. Compress the throttle
control and while holding the throttle control in
this position, crank the engine over and check for
spark. If spark is now present, adjust the throttle
cable tension.
3. If no spark is present, disconnect the main wiring
harness from the engine. Crank the engine over. If
spark is present, the problem is either one or more
of the following:
A. Defective emergency stop switch
B. Defective safety switch in throttle-control
housing
C. Corroded or loose wire connection at the throttle-
control housing or main wiring harness
D. Defective ignition switch
��NOTE: To check these possible causes, proceed
to Testing Ignition System.
Testing Ignition System
(EFI Models)
��NOTE: There must be free-play between the
throttle lever and the control housing.
MAIN WIRING AND SAFETY
SWITCHES
1. Check the wiring connections coming from the
ignition key and emergency stop switches. The
throttle control switch connector is located on the
front side of the steering post. If any of the connections
appear dirty or corroded, clean them with
fine sandpaper and compressed air; then connect
all wires and squeeze the connections with a pliers
for additional tightness.
2. Disconnect the main wiring harness connector
coming from the engine stator assembly. Disconnecting
this connector will bypass the main wiring
harness and all switches which will not allow the
engine to be shut off without first installing an
additional auxiliary ground wire.
3. Insert an auxiliary ground wire into the black wire
of the four-wire main harness connector on the
engine side. To stop the engine once it has been
started, touch the auxiliary ground wire to the
engine.
4. Support the rear of the snowmobile up on a
shielded safety stand; then set the brake lever lock.
Inspect the complete throttle mechanism to assure
that it's working properly.
5. Attempt to start the engine. To stop the engine (if
the engine starts), touch the auxiliary ground wire
installed into the four-wire connector to a ground
on the engine. If the engine fails to start, the problem
is with the coils mounted on the engine, high
tension coil assembly, or the ECU. If the engine
starts, the problem is with the switches, main wiring
harness, or throttle cable free-play
IGNITION KEY SWITCH
1. Disconnect the ignition key switch connectors;
then connect the ohmmeter leads to each of the
ignition key switch terminals
2. With the switch in the OFF position, the meter
must read less than 1 ohm of resistance.
3. With the switch in the ON position, the meter must
read OL (infinite resistance).
THROTTLE CONTROL SWITCH
1. Verify that the throttle cable has free-play between
the throttle lever and control housing.
2. Disconnect the throttle control switch connector;
then connect one ohmmeter lead to the brown wire
and the other lead to the black/white wire of the
emergency stop switch.
3. With the throttle lever in the idle position and the
emergency stop knob in the up (RUN) position,
the meter must read no resistance (open). If the
meter reads resistance (closed), replace the switch.
4. With the throttle lever in the idle position and the
emergency stop knob in the down (STOP) position,
the meter must read resistance (closed). If the
meter reads no resistance (open), replace the
switch. With the emergency stop knob still in the
down (STOP) position, move the throttle lever to
the wide open position. The meter must read no
resistance (open). If the meter reads resistance
(closed), replace the switch.
5. Connect one ohmmeter lead to the brown wire and
the other lead to the violet wire. With the emergency
stop knob in the down (STOP) position, the
meter must read resistance (closed). If the meter
reads no resistance (open), replace the switch.
With the emergency stop knob in the up (RUN)
position, the meter must read no resistance (open).
If the meter reads resistance (closed), replace the
switch.
if ya need the specs for testing coils and stator let me know and i will post them if your an 07/..
D
Un plug the switch and un plug the kill switch, be sure to check the ground wire on the recoil housing bolt.
J
Thanks guys
Tried all that and still no spark. It is a 2004 900 EFI
Tried all that and still no spark. It is a 2004 900 EFI
D
About all thats left is the trigger and ecu. You can ohm the trigger but the ecu would need to go to a dealer to check or borrow one off another sled just to try.
On the M, if the injector wires ground out it will cut spark.
D
He has a 1M but I think they are wired the same way. It's pretty easy to wear the cover off one of those little wires.
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