2007-2013 MarinePower MEFI 5 Shift Interrupt
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Condition: Shift Interrupt Inoperative
Cause: Shift Interrupt Switch not connected to ECM terminal J3-46
Correction: Connect Shift Switch to ECM terminal J3-46
Notes on this procedure:
1. Applies to any MEFI-5 equipped Marine Power engine requiring the use of Shift
Interrupt to facilitate shifting into neutral
2. The ECM must be properly calibrated in order for the Shift Interrupt feature to
function as intended – contact Marine Power if Shift Interrupt does not function after
the following procedure is completed.
Procedure:
1. Remove Dress Cover from ECM connector J3 – see figure 1
2. Locate terminal J3-46 - see figure 2
3. Remove the grey cavity plug from J3-46 - see figure 3
4. Insert a terminated wire into J3-46 with the terminal oriented as shown in figure 4
5. Push the terminal into the connector until you hear and feel the “click” – see figure 5
6. Pull back on the wire to make certain the terminal does not pull out of the connector
7. Route the wire just installed to the Shift Interrupt Switch
8. Install the wire in conduit and secure with wire ties to make certain the wire is
protected
Service Bulletin
Date: 22-May-2014
Condition: Shift Interrupt Inoperative
Cause: Shift Interrupt circuit to ECM terminal J3-46 missing
Correction: Connect Shift Interrupt switch circuit to ECM J3-46
Procedure continued:
9. The Shift Interrupt switch must be a normally open switch connected to engine
ground when closed. In addition the switch should provide only a momentary
connection to ground when the shifter is moved from in-gear (either forward or
reverse) to neutral.
10. Replace the Dress Cover on ECM connector J3 , start the engine, and verify the Shift
Interrupt function.
11. When shifting into neutral, the shift interrupt should momentarily cause the engine
RPM to drop making it easy to pull the shifter into neutral.
12. If Shift Interrupt does not operate, contact Marine Power for re-calibration of the
ECM.
Service Bulletin
Date: 22-May-2014
Figure 1– ECM Connector J3
Connector J3
Figure 2 – Location of ECM Terminal J3-46
Figure 3
J3-46
Grey Cavity Plug
Removed
Figure 4
Note orientation of
terminal in connector
Figure 5
Push terminal into
connector until you
hear and feel the
“click” then pull back
on the wire to make
certain the terminal
does not pull out of
the connector.
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$26.99
$35.99
This package contains MarinePower MEFI 5 Shift Interrupt Tune Files designed for optimizing shift quality and engine protection on 2007-2013 MarinePower 4.3L and 5.7L V-6 Alpha One and Bravo One gasoline engine models. These tune files aim to reduce shift shock, enhance shift stability, and adjust shift speeds for improved engine protection, insurance, and optimal performance.
- 2007-2008 MarinePower 4.3L Alpha One Tune Files
- 2007-2013 MarinePower 4.3L Bravo One Tune Files
- 2007-2008 MarinePower 5.7L Alpha One Tune Files
- 2007-2013 MarinePower 5.7L Bravo One Tune Files
Our MarinePower MEFI 5 Shift Interrupt Tune Files offer an easy way to experience improved performance and superior shift quality. Download them today and notice the difference in your engine's power output in no time.
