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- MShift™ TCU
- MShift™ Intro
- GPIO Build Guide for 4L60E
- Base circuits
- GPO1, GPO2, GPO3,
GPO4 (gear LEDs)
- VB1, VB2, VB3, VB4
- PWM1, PWM2, PWM3, PWM4
- GPI1, GPI2, GPI5
(2/4WD, Input2, downshift)
- GPI3 (Temperature)
- GPI4 (Brake sense)
- EGT1, EGT2, EGT3,
EGT4 (non-CAN Load,
line pressure, Input3,
- VR1 (Vehicle
- VR2 (Upshift button)
- Finishing Touches
- Testing your
- External Wiring Guide for 4L60E
- Current Release Code
- User Settings
- βeta Code
- Code Archives
- Purchase a
- Working with the Shift Table
- Solving VSS
- Ports, pins, circuits, connections
- MShift™ Discussion
- Misc. MShift™
- MShift™ sitemap
- Template Project Code
- GPIO Board Intro
MegaShift™ V2.00 Transmission Stimulator
We offer an upgraded version 2.00 of the TranStim™ transmission stimulator for the MShift™ automatic transmission controller (designed for use with the GPIO and MShift™ code, but it will work with any transmission controller for the 4L60E, as well as many other modern electronically controlled transmission controllers).
The TranStim™ transmission stimulator will help you to:
- Validate and troubleshoot a newly built GPIO/MShift™ board and harness,
- Become familiar with the MShift™ software settings, and
- Distinguish between controller and transmission issues if they arise.
The TranStim™ transmission stimulator has:
The board is 2.5" x 4". Users can either:
- All of the essential input and output (I/O) connections for the MShift™ controller,
- VSS signal generator built in with a range from ~9 Hertz (9 times per second) to as much as 30 kilohertz (30 thousand times per second) - up to well over 200 mph with the default parameters. The VSS circuit is equipped with an LED status indicator,
- Seven LEDs to indicate the status of the PC, TCC, Output 1 (SolA on the 4L60E), Output 2 (SolB), and Output 3 (3/2sol on the 4L60E) transmission control solenoids, as well as spare outputs 1 & 2,
- Four LEDs (D1-D4) to indicate the current gear from the controller,
- A rotary switch (~$7 @ www.digikey.com) to set the manual shift lever position gear (the other pole is brought out on a 0.100" header for those wanting to design their own shift sequence or a custom variable voltage shift lever set-up)
- Four #10 screw holes (3/16") for mounting or stands, as well as grounding a scope probes or other test devices,
- A pot that can be configured for variable resistance (a Ford shifter, for example) or a 0 to 5 Volt signal (non-CAN load or other uses).
- a pot for transmission fluid temperature feedback.
- plug their ampseal pigtail into this for testing while assembling the GPIO, or
- use a 4L60E internal connector to test their entire harness (the pigtails are common - transmission shops frequently replace them since they have the TCC solenoid as an integral piece - new they are about $40).
A Digi-Key automated order BOM for the TranStim™ transmission stimulator is here: V2.00 Trans Stim. You will need these parts plus a TranStim™ printed circuit board.
The build instructions are here: V2.00 Build Instructions
Ordering a V2.00 TransStim™ Stimulator PCB
TransStim™ stimulator PCBs are now available exclusively through DIYAutotune: TransStim™ transmission stimulator at www.diyautotune.com. Click the link to go to DIYAutotune's website to purchase a V2.00 TransStim™ stimulator printed circuit board.
MegaSquirt® and MicroSquirt® controllers are experimental devices intended for educational purposes.
MegaSquirt® and MicroSquirt® controllers are not for sale or use on pollution controlled vehicles. Check the laws that apply in your locality to determine if using a MegaSquirt® or MicroSquirt® controller is legal for your application.
© 2010, 2012 Bruce Bowling and Al Grippo. All rights reserved. MegaSquirt® and MicroSquirt® are registered trademarks. This document is solely for the support of MegaSquirt® boards from Bowling and Grippo.