Troubleshoot Guide
for Mastercraft (OEM)

ezDrive Troubleshooting Form (Mastercraft) (OEM)

1) Take Photos

Please take the following photographs of your ezDrive™ installation before disconnecting your ezDrive™ Thruster and completing the rest of the troubleshooting process:

This guide is specifically designed to resolve/diagnose any thruster issue efficiently with minimal labor hours.

Any unwarranted diagnostic beyond the scope of this guide is not billable

**ATTENTION - Failure to follow this guide or dismantling of thruster system components beyond the steps outlined in this guide WILL VOID ANY WARRANTY**

Please submit the following requested photos with your form before disconnecting your ezDrive Thruster!

2) Upload Photos

Please provide all of the photos as described above.






All information below MUST be completed

Troubleshooting Steps

Please complete ALL required steps below and check boxes.

Make sure to disconnect power to the thruster by manually tripping ezDrive breaker BEFORE checking propeller.


** Shear pin & propeller's hub can be inspected by blocking blade and removing nut. 

2. Check that all + & - lugs are secure to 10 lb-ft including battery, breaker, battery switch, fuse, ground, block & iBox. Then Reset breaker.

3. Check battery to ensure minimum of 12.5v output at terminals. IF LESS than 12.5V, THE BATTERIES ON BOARD THE VESSEL MUST BE CHARGED OR REPLACED.

4. Remove iBox cover and ensure that nuts securing the A1 cable to solenoid, A2 cable to solenoid, power (+) cable, and power (-) cable are all tight to 4 lb-ft. Test for voltage at iBox power supply inside iBox for minimum of 12.5 volts. iBox lid screws torque specification is 10in-lb

(Warning: During the next step, be sure not to touch the black and red wires together as this can cause instant short and potentially be dangerous)

For best results, use an alternate 12V source that is not related to the boat or thruster (such as a separate 12V battery). This eliminates the potential for a loose connection in the system to give a false result when testing thruster function.

Control System Guide



My Throttle Control Switch does not work

1. Verify with ENGINE ON that there is 12.5v or more coming out of the white wire in the 3-pin Deutsch connector on the throttle, if no, check security of connections or control is the problem.


2. Disconnect throttle harness from the thruster i-Box harness. Switch you multi-meter to the position that reads continuity. Insert the RED lead from your meter into the pin on the deutsch plug that's connected to the White wire. Insert BLACK lead from meter into the pin with the Green wire.


3. Test throttle control by activating switch in both directions. When operating in one direction, you should have continuity between the White wire and the Green wire. Remove the BLACK lead and insert into the pin with the Brown wire. Twist control knob in opposite direction and check for continuity. If either direction does not work, problem is in the control.