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I have a 2000 zr 600 efi. I have been having a few minor issues with it. I was told by Black Magic to check my ecu for flashes and they could tell me what they mean, but they were busy today.

Could someone tell me what the different flashes stand for? I would really appreciate it.



Shawn
 

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I have a 2000 zr 600 efi. I have been having a few minor issues with it. I was told by Black Magic to check my ecu for flashes and they could tell me what they mean, but they were busy today.

Could someone tell me what the different flashes stand for? I would really appreciate it.
Shawn[/b]
Too busy? Nice service. Phone any cat dealer. They should be able to help you out
 

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This should help. I would do a compression check on your engine first to make sure the engine is fine before you start diagnosing your EFI problems. I hope this helps.

The batteryless EFI system is made up of the following
components.
1. Low and high speed charge coils which are located
on the stator provide AC voltage to operate the CDI
unit. The CDI unit is located within the ECU. The
AC voltage is converted to DC voltage within the
ECU.
2. A fuel pump coil located on the stator operates the
low voltage, high output fuel pump. At cranking
speed, the high output fuel pump provides enough
fuel to charge the fuel rail.
3. An injector coil located on the stator provides the
injectors with DC voltage for operation through the
ECU.
4. A lighting coil located on the stator plate provides
175 watt output to operate accessories and the
lighting system.
5. An electrical control unit (ECU) calculates input
from five sensors (intake air temperature sensor,
water temperature sensor, throttle position sensor,
crankshaft positioning sensor, barometric pressure
sensor) to provide the engine with the correct fuel
mixture and timing for optimum operation.
EFI FEATURES
1. Automatic compensation for temperature.
2. Automatic compensation for altitude.
3. Optimum throttle response through high pressure
injection.
4. Quick starting in every condition.
5. Improved fuel efficiency with maximum mileage in
every condition.
6. Engine RPM more stable in every condition.

Trouble Codes
Number of
Flashes Trouble
1 Open or short circuit in throttle
position sensor.
2 Open or short circuit in water
temperature sensor.
3 Open or short circuit in intake air
temperature sensor.
4 Open or short circuit in barometric
pressure sensor.
5 Failure in injector(s).

TROUBLESHOOTING INDIVIDUAL
COMPONENTS
NOTE:With the Arctic Cat Batteryless EFI System,
it is extremely important that the ECU receives the
proper current output from four coils (two charge
coils, an injector coil, and a fuel pump coil) to
function as designed. If a problem exists, these
coils should be checked using the following
procedures.

Low/High Speed Charge Coil
Resistance Test
The low/high speed charge coils power the CDI system
and the ECU. To test these coils, disconnect the 3-wire
connector from the ECU to the stator.
1. Set the meter selector to the OHMS scale and test
between the black and green wires (500/580 cc) or
the black/red and green/red wires (600 cc).
2. The meter must show 46 ohms ± 20% (500/580 cc)
or 17 ohms + 20% (600 cc).
3. Test between the green and brown wires (500/580
cc) or the green/red and brown/white wires (600
cc).
4. The meter must show 450 ohms ± 20% (500/580
cc) or 17 ohms + 20% (600 cc).
NOTE: If either test is not within specifications,
the stator must be replaced. Refer to the wiring
diagram in the back of this section.

Injector Coil Resistance Test
The injector coil located on the stator powers the two
injectors.
1. Disconnect the double-wire plug with two blue
leads (500/580 cc) or with two blue/white leads
(600 cc) from the stator to the ECU.
2. Set the meter selector to the OHMS scale.
3. Connect a meter lead to each of the blue or
blue/white leads. The meter must show 21 ohms ±
20% (500/580 cc) or 19 ohms + 20% (600 cc).
NOTE: If reading is not within the specification,
recheck to confirm test results. If still out of
tolerance, replace the stator.
NOTE: If the resistance test is good, a peak reading
voltage test should also be made. Refer to Peak
Voltage Tests and Specifications in this section.

Fuel Pump Coil Resistance Test
The fuel pump coil powers the fuel pump through the ECU.
NOTE: With the engine running, there should
12.3-12.9 DC volts supplied to the fuel pump for
operation. To test fuel pump coil resistance, use the
following procedure.
1. Disconnect the double-plug with the two orange
wires from the ECU.
2. Set the meter selector to the OHMS scale. Connect
a meter lead to each of the two orange leads.
3. The meter must show 1.8 ohms ± 20% (500/580 cc)
or 1.9 ohms + 20% (600 cc).
NOTE: If reading is out of tolerance, recheck to
confirm reading. If still out of tolerance, replace the
stator.
NOTE: If the resistance test is good, a peak
reading voltage test should also be made. Refer to
Peak Voltage Tests and Specifications in this
section.

Lighting Coil Resistance Test
The lighting coil located on the stator provides AC
power to the lighting system and accessories through a
175 watt charging system. To test the lighting coil
resistance, follow this procedure.
1. Disconnect the 3-wire connector at the engine.
2. Set the meter selector to the OHMS scale.
3. Test between the two yellow leads.
4. The meter must show 0.09 ohm ± 20% (500/580 cc)
or 0.10 ohm + 20% (600 cc).

NOTE: If reading is out of tolerance, recheck to
confirm reading. If still out of tolerance, replace the
stator.
 
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