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{{Article_of_week|
{{Article_of_week_img
title=F5M3x TSB|
|title=Jatco JF011E Stepper Motor Testing
synopsis=In July, 1991 both Mitsubishi and Chrysler (who were selling badge-engineered Eagle Talon, Plymoth Laser and Dodge Stealth) issued a Technical Service Bulletin acknowleging an issue with shift quality and clashing (crunching) on the F5M21-F5M33 series manual transaxles.  
|image=F1CJA Stepper Motor.jpg
|synopsis=The Jatco JF011 CVT transmission, referred to by Mitsubishi as the F1CJA and W1CJA) is known for having a number of issues. One of the most common problems with the transmission is the failure of the stepper motor. When the stepper motor fails, you will receive a P1777 error indicating an electrical malfunction with the stepper motor.


According to Mitsubishi TSB 91-22-031 all transmissions built after 11 November, 1991 had modifications made to the 1-2 synchroniser hub and sleeve, the 1-2 synchroniser spring and the 3-4 synchroniser spring. Mitsubishi states that the improvements can be made to gearboxes made prior to 11/11/91 so long as the 1-2 synchroniser hub, sleeve and spring are changed at the same time. The 3-4 syncroniser spring can be changed by itself without affecting the rest of the 3-4 syncroniser assembly.
In this article we show you how to test if the stepper motor is OK.
 
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Latest revision as of 01:32, 13 September 2020

Jatco JF011E Stepper Motor Testing

The Jatco JF011 CVT transmission, referred to by Mitsubishi as the F1CJA and W1CJA) is known for having a number of issues. One of the most common problems with the transmission is the failure of the stepper motor. When the stepper motor fails, you will receive a P1777 error indicating an electrical malfunction with the stepper motor.

In this article we show you how to test if the stepper motor is OK.

» Entire article