TSB: Jatco CVT-7 | F1CJB | JF015E Continuously Variable Transmission

[Eggman]

CVT

MANUFACTURER COMMUNICATION NUMBER: TSB-17-23-003
Components: ELECTRICAL SYSTEM, EQUIPMENT
NHTSA ID Number: 10109106
Manufacturer Communication Number: TSB-17-23-003

Summary
This is a Technical Service Bulletin, sent to dealers, to provide instructions for reprogramming the CVT ECU with updated software to minimize shift shock.

5 Affected Products

MAKE	MODEL	YEAR
MITSUBISHI	MIRAGE	2014-2017
MITSUBISHI	MIRAGE G4	2017

1 Associated Document
Manufacturer Communications
MC-10109106-9999.pdf 645.615KB

MC-10109106-9999.pdf 645.615KB
No: TSB−17−23−003
SUBJECT: SHIFT SHOCK WHEN COMING TO A STOP OR AFTER A COMPLETE STOP

PURPOSE On certain Mirage and Mirage G4 vehicles with CVT transmissions, drivers may experience shift shock in the following conditions:

Condition 1: When coming to a stop.
Condition 2: After coming to a complete stop with the transmission in the D range.

The first condition may be caused by improper timing of the torque converter clutch disengagement.

The second condition may be due to improper CVT clutch engagement control, causing the driver to experience shift shock when the CVT clutch is re-engaged.

This TSB instructs dealers to reprogram the CVT ECU with updated software to optimize the torque converter or CVT clutch engagement control to minimize shift shock.

AFFECTED VEHICLES The following vehicles equipped with CVT transmissions may exhibit one or both shift shock conditions:

Condition	Model	Model Year	Affected VIN Range Starting VIN	Affected VIN Range - Ending VIN
1 & 2	Mirage	2014	All	All
1 & 2	Mirage	2015	All	All
2	Mirage	2017	Beginning of Production	ML32A3HJ2HH020447
2	Mirage G4	2017	Beginning of Production	ML32F3FJ9HHF19303

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As I find other TSBs related to the CVT, I'll either include them in this post or as a separate post in this thread. I'll try to keep things organized here.