MegaShift 4L60E - Outputs from gpio pinfunctioncontrollimits asol a (1-2/3-four) switched gnd (aka. Output1)on/off20-40 ohms (0.75 amps max.) Bsol b (2-3) switched gnd (aka. Output2)on/off20-40 ohms (0.Seventy five amps max.) Cpressure control solenoid highpower (nominal 12v)switched 12v from harness dpressure manage switched gndpwm (293hz)zero to 60 (3.Five - four.6 ohms at 20°c, 1.1 amps max.) E 12 volt powerhigh (nominal 12v)switched 12v from harness ulock-up sense solenoid switched gnd now not constantly usedpwm (32 hertz) 10-eleven.Five ohms at 20°c s3-2 sol switched gnd (aka. Output3)pwm (50hz)9-14 ohms at 20°c ttorque converter grasp solenoid switched gndon/off20-forty ohms (1.5 amps max.).
Inputs to gpio pinfunction ltemperature sensor sign mtemperature sensor gnd npressure transfer a (aka. Input1) rpressure switch b (aka. Input2) ppressure transfer c (aka. Input3) n/a2wd/4wd enter (floor for four wheel drive) n/avehicle pace sensor (vss) - has its personal 2-pin connector.
Functionportcircuitampseal pin sol a (output1)pe4vb323 sol b (output2)pm2vb435 sol32 (output3)pt1pwm434 pcpt2pwm333 tccpt3pwm232 led1pm4gpo110 led2pm3gpo27 led3pm5gpo38 led4pb4gpo49 switcha (input1)ad0egt4 (jumper)26 switchb (input2)ad1gpi26 switchc (input3)ad3egt325 paddle uppt6vr215 paddle downad6gpi54 vsspt0vr12 temp sensorad2gpi330 brake sensead7gpi43 speedo outputpt4pwm131 non-can map/tps/mafad5egt124 line strain sensorad4egt227 2wd/4wd switchpe1gpi15 spare output1 (lu experience/seize)pt7vb1 (jumper)eleven spare output2 (grab)pa0vb212.
Notes: for the stress control (laptop) solenoid: you need a minimum four.7 ohm (or higher resistance - as much as ~10 ohms), 10 watt (or more) resistor (inclusive of digi-key 4.7cwbk-nd, $1.Sixty seven) on the strain manipulate solenoid twine from the trans connector pin d to the gpio board's pin 33. This resistor dissipates up to 4 watts of power at low line pressures (maximum pwm probabilities). As a result, the resistor can get warm, so mount it on a warmness sink (ideally a metal block) in an area with plenty of air circulate. Along side that resistor, you'll want a 1n4001 recirculation diode located between pin c and d at the 4l60e connector (the towards the transmission connector the better). Be cautious to orient the diode efficaciously. These extra outside components reduce the flyback spikes from the solenoid to conceivable ranges stopping harm to diverse gpio board additives and doubtlessly cleansing up outside indicators such as the vss. Any solenoid that is pulse width modulated (which include the shift solenoid outputs, tcc, and luf), if they are pwm'd) require which you placed a flyback diode on the solenoid. The illustrated instructions are here: recirculation diode commands. Deploy an external diode among that solenoid's voltage deliver and the line going to the gpio board. The banded quit of the diode goes to the voltage deliver cord, the non-banded give up of the diode goes to the road to the gpio board. Set up the diode as near the solenoid as is handy. The 1n4001 diode is mounted externally to keep away from bringing excessive-voltage noise into the gpio. 1n4001 diodes are to be had at definitely any electronics deliver save. Without this external diode in the pwm circuits, you may damage some internal additives. The four resistors for the leds may be 330 to 390 ω, ¼ watt. In case you need a 'mode selection transfer' to pressure automobile mode or permit manual mode, you could do that with a switch and diodes (1n4001 or equal): (this circuit simplest works with 'shift button polarity' = "energetic low".) While the mode transfer is closed, automobile mode could be used, no matter what you do with the shift buttons. If the mode switch is open, pushing either the upshift button or downshift button will put you in manual mode (and pushing each or switching the mode pick transfer to automobile will positioned you returned in car mode). Sensors: the 4l60e uses three kinds of sensors: temperature sensor, used to decide tcc lock-up, 3 pressure switches (no longer that those are now and again called 'transmission strain switches, tps, however they need to no longer be confused with the throttle position sensor), used to decide the presently selected tools (i.E., The shift lever role), vehicle speed sensor (variable reluctance [vr] kind), used for a number of standards. Notes: there may be an early and a overdue model of the 4l60e transmission. The difference is the addition of the "lockup feel" solenoids (aka. Tcc pwm solenoid). Vss (vehicle velocity sensor) on 2wd vehicles is in transmission extension housing, on 4wd automobiles the vss is in transfer-case. The ecu additionally senses a brake switch and turns off the tcc solenoid on every occasion brakes are applied. Tcc lock-up solenoid is commonly simplest energized in 4th tools, if the transmission temperature is above 250°f it's going to energize it in 2d and 3rd as nicely. Obligation cycle on the stress manipulate solenoid is inversely proportional to the throttle perspective (as throttle perspective increases, obligation is reduced). At idle (minimum throttle), the responsibility is at max (60). At wot (wide open throttle), the duty is at min (0 or off). Notice that the computer solenoid takes the area of the throttle valve cable on in advance transmissions. In the tunerstudioms interface, the 0-60 sign has been converted to a forty-a hundred sign, where one hundred way maximum line pressure, and forty approach minimal line stress. This *must* be more intuitive for the consumer, hopefully. All solenoids percentage common 12v line on pin e (besides pressure control solenoid, which has its personal 12 volt deliver on pin c) and are switched on and rancid with ground. Shift patternsol a (1-2/three-4) output1sol b (2-three) output23-2 sol output3tcc sol (lu)lockup sense***pressure manipulate solenoid solratio parkononon #on *n/a reverseonon on #on *2.294 neutralononon #on *n/a 1stononon #on *three.059 2ndoffonon ***on/off**on #on *1.625 3rdoffoffon ***on/off**on #on *1.000 4thonoffon ***on #on * zero.696 luonoffon ***on**on #on *n/a * the pressure control solenoid controls principal line stress, pulsed at 0-60 responsibility cycles at 293 hertz. There is no cleansing pulse (dither) each 10 seconds on this transmission (in contrast to the 4l80e). ** The tcc is pulsed (frequency is 32 hertz, with duty cycle numerous). Maximum contemporary must now not exceed 1.Five amps. *** The three-2 sol is pulsed at 50 hertz, 0 responsibility in 1st, ninety responsibility in all different gears. For the duration of a 3-2 downshift, the duty is reduced and this obligation is related to the automobile speed; decrease velocity, decrease obligation. # The lock-up sense (luf) solenoid turned into possibly put in high quit cadillacs for seamless transferring. In first gear, at about thirteen km/h (8 mph), the oem ecu pulses the luf (aka. Tcc pwm) solenoid valve at about ninety percent duty cycle. This duty cycle is maintained until a tcc observe is commanded. While vehicle running situations are suitable to apply the tcc, the oem ecu right now decreases the responsibility cycle to 0 percent, then will increase it to about 25. The oem ecu then ramps the duty cycle up to approximately 50 to reap regulated observe strain in motors ready with the electronically managed grasp capability (eccc). With the eccc device, the pressure plate does no longer fully lock to the torque converter. Rather a steady slip of 20 to forty rpm is maintained. The fee of growth of the duty cycle controls the tcc follow charge. Further, the pcm additionally ramps down the luf solenoid responsibility cycle to control tcc release. With some excessive torque or excessive vehicle speeds, the converter seize is absolutely locked via the oem eu. Solenoids: solenoidresistance (ohms at 68°f)normal inductance (millihenries) solenoid a20 - 4043.0 solenoid b20 - 4043.0 3-2 solenoid9 - 1414.1 tcc20 - 4056.Nine lu feel10 - 11.5not regarded stress control3.5 - 4.58.1 strain transfer manifold the pressure transfer manifold (psm) is a more than one switch assembly including three generally open (no) strain switches and 2 normally closed (n/c) stress switches. Fluid from various hydraulic manipulate circuits is fed to this the stress switch manifold which allows the european to decide which gear the shift lever is currently shifted into (no longer always the real equipment the transmission is in). The switch contacts are typically open and near while fluid strain causes them to. Relying upon the circuit, the transfer can also offer a ground course whilst closed. The table underneath suggests a pin that is grounded by the psm as a "zero", even as an open circuit suggests a 12 (volts). Gearpin n input1pin r input2pin p input3 parkhighlowhigh reverselowlowhigh neutralhighlowhigh 4th (overdrive)highlowlow 3rd (drive)highhighlow 2ndhighhighhigh 1stlowhighhigh case connector pinfunction asol a (1-2/three-4) switched gnd output1 bsol b (2-three) switched gnd output2 e 12 electricity npressure switch a input1 rpressure transfer b input2 ppressure transfer c input3 mtemperature sensor gnd ltemperature sensor signal s3-2 solenoid switched gnd output3 dpressure control solenoid switched gnd cpressure control solenoid 12v ulu feel solenoid switched gnd ttcc solenoid switched gnd predominant line pressure tap megashift has a line stress sensing/logging characteristic constructed it. It's far digikey msp6907-nd for $114. It is a zero.Five-4.5 volt output (accuracy &plusminus;five psi), and has just a three twine hookup: 5v from vref on ampseal pin #28, ground, and signal to ampseal pin #27. It has a 1/eight npt becoming - the same as the transmission port. However, a ninety° elbow, or maybe even a few tubing, will be required in maximum installs to preserve the sensor away from the transmission tunnel. 4l60e temperature sensor output °c°f r (ohms) -40-40 100544 -28 -21 52426 -sixteen -10 18580 -four 23 12300 zero 32 9379 7 forty 7270 19 sixty eight 3520 31 86 2232 forty three a hundred and ten 1200 fifty five 131 858 67 a hundred forty five 675 seventy nine 176 333 91 194 241 103 213 154 one hundred fifteen 239 one hundred fifteen 127 260 seventy nine 139 284 60 151 302 forty seven megasquirt® and microsquirt® controllers are experimental devices meant for academic functions. Megasquirt® and microsquirt® controllers are not on the market or use on pollution controlled vehicles. Check the legal guidelines that practice to your locality to decide if using a megasquirt® or microsquirt® controller is criminal to your utility. ? 2004, 2016 bruce bowling and al grippo. All rights reserved. Megasquirt® and microsquirt® are registered logos. This document is purely for the help of megasquirt® forums from bowling and grippo.
On ms-ii controllers, the can paths are: canh: cpu pin pm0 (#45) → 40-pin socket pin 6 → js6 jumper to spr1/canh → db37 pin three, canl: cpu pin pm1 (#forty four) → forty-pin socket pin eleven → js8 jumper to spr2/canl → db37 pin 4.