BoonDocker YAMAHA: Nytro Turbo User Manual
Page 19
BoonDocker – 1585 Hollipark Dr. Idaho Falls, ID 83401 – 208-542-4411 / 877-522-7805
www.boondockers.com – email:
– fax: 208-524-7381
Revised 2-13-08
Copyright © 2004-2008 by Boondocker
Page 19 of 20
B. Injector Fault
The Control Box monitors the signals from the sled’s ECU. If it detects signals on one set of wires but not the other, it
will detect a fault on that injector and display one of the two error messages.
Injector 1 Fault!
Missing or bad signal detected on Injector #1 (yellow wire).
Injector 2 Fault!
Missing or bad signal detected on Injector #2 (green wire).
Injector 3 Fault!
Missing or bad signal detected on Injector #3 (blue wire).
Injector x Fault!
This means a previous injector fault has occurred which has not yet been
cleared. (Press any button when error message is displayed to clear the fault)
If any of these conditions occur, the Control Box will still function and it will still try to make fuel adjustments, but
the intermittent injector connection will need to be fixed. Contact Boondocker to determine if the Control Box and
harness need to be sent back to be inspected or serviced.
Note 1: Injector errors that occur infrequently can be ignored since they are likely caused by sporadic electrical noise.
Note 2: It is possible for the sled to run but the wiring harness to be wrong – the box cannot make proper fuel
adjustments. If you see an injector error, first recheck the wire positions in the black connectors
according to the tables in these instructions.
C. Other Issues
Engine runs erratically:
1. Verify that the ground on the sled’s harness has a good connection to the chassis.
2. Verify that the EFI Harness Ground Wire has a good connection.
3. Verify that all wiring is in good condition and that the wires have not pulled out of the terminals. To verify this,
look inside each connector and verify that the terminal pins are all at the same height. If a terminal is starting to
back out, it will appear to be lower in the connector, or the seal on the back-side will be protruding out farther
than the rest.
4. Unplug the EFI harness and plug original harness back into the injectors and verify that the sled runs OK.
5. If problem only occurs with Control Box plugged in, change all fuel adjustment settings to 0 and see if problem
persists.
6. Verify that the Control Box does not reset itself when the sled is running by doing the following:
a. When the sled is first powered up, change the menu screen on the Control Box to one of the fuel adjust
screens.
b. Run the sled.
c. Before shutting off the sled, verify that the screen is still on the same menu selection.
d. If the startup screen is displayed (showing version number etc.), the box has reset itself. This is likely
caused by bad voltage to the box due to an intermittent connection.
7. If necessary, the voltage supply to the box can be verified using a voltmeter. Probe from the Mag-side gray
connector on the EFI harness where two red wires go to one connector terminal. Insert a small thin wire such as a
paperclip or a small probe tip between the connector and the rubber seal in order to make contact with the terminal
inside. Place the positive voltmeter probe here. Place the negative voltmeter probe on chassis ground. At idle the
DC voltage should read around 12-14V.
Rough Idle:
Idle adjustments are much more sensitive than other adjustments since the injectors are on for a
very short duration. You may not be able to adjust your 3000 LO settings by very much.