Versatile Engine Management Systems - VEMS wiki

Step by step guide for completing your V3.2 board

GenBoard/Manual/InitialTesting/VerThree is very similar (these must be consolidated), but this page has more images.

Rob makes [step-by-step documentation] that adds to this. Hopefully these can be merged.

Now also: [Flyback instructions]

[EGT Guide]

[Input Trigger]

Wbo2Setup

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This page is about to describe how to make controller working from the beginning (assuming starting from the board, and NOT the cased unit that has significantly more stuff installed).

Now I'm just gathering the ideas and completing the page while thigs are getting ahead. Page will probably have a better place, but got to start from somewhere..I hope you like what I'm adding - GrmRacer

Could somebody make this a checklist?

I have a brand new v3.2 board in my hand - what next?

• Check that you got everything you ordered
  • Minumum to do this: Genboard v3.x (Rescue 1, Rescue 6, and FETs)
• To do this setup by step you will need to know a few things.
  • Trigger type (Hall or VR sensor)
  • High or Low Impedance(Z) injectors ( how many what configuration) determines Flyback setup
  • Ingition setup
  • Basic Options (list goes here)
  • WBO2 type, this StepByStepGuide only covers the BoschLSU4 WB02
  • etc.

Is there something I still need to solder?

Board has most of the components soldered by factory, but there are something missing. Most notably the flyback. Also some components related to extra features like EGT / knockdetect, and the driver FETs

One still needs to solder by hand:

• Injector Flyback [picture] -- there are several versions, this one is the standard

• 8 diodes, marked ES2J (RED), make sure to solder them in the correct direction, showed by the white stripe [RescueKit] for description of parts

• Above step is not needed on v3.3 as it has the diodes (ES2J) soldered on already

• a flying wire from flyback rail to EC36 connector (YELLOW). On v3.3 there is a pad hole for this, on earlier versions you might have to scrape the coating and solder the wire to a trace, as shown [here]

• Injector & Ignition drivers (TO220 cased). Check [image of mounted TO220 switches]. Note that the legs are bent in appr. 110 degrees not 90 degrees (as shown bad on some pics). This maintains less mechanical stress when clamping with the clamping plate. Note the insulator sheet below the components (the IGBT bodies must be insulated from the case and each other). IGBTs must not contact, this must be verified with DVM ohm (or diode-mode) measurement between ignition outputs (short between them is not good).

• Solder drivers to the bottom side of the board [ See placement from this image] (Note: picture shows IGBT instead of FET for WBO2 heater).

• red = [ignition IGBT], blue = [injector FET], yellow = [WBO2 heater FET], purple = DPAK FET. The DPAKs are good for anything configurable through GenBoard/Manual/DigitalOut, but only for resistive loads. For inductive loads flyback must be made (either in the harness, or somehow onboard, but no pads are reserved for this).

• Bend legs and solder them like shown in [this picture]

• The ignition traces have higher clearance (for higher voltage capability) so the IGBT legs have to be [spread a bit] to make them fit.

• [Knock] chip + extra components
  • list
  • pics
• [EGT Guide] chip + extra components
  • [Image] of mounted chip
  • solder blobs shorting [L4] and [C44] (and [C55] for EGT2)
• Connectors
  • EC36 + EC18 [pinout]
  • Serial, LCD, PS2 - group to eg. one DB25 connector, preferred pinout Is there one?
  • EGT + information about connector and compensated wires
  • etc.
• Fuse
  • [This] is this part it goes between Vbatt & +13V ( has marking 1R5 and is heatshrinked barrel) see [OtherBuildSection] for more information It also covers the WBo2 setup
  • Huge inductor is placed to RED and fuse wires to BLUE area in this [picture].
  • Could someone verify that [this] fuseholder would work?
• Trigger 1 (primary trigger) Version 3.1 info can be found on StepByStepGuide/Notes
  • Hall sensor connected to primary trigger
    • Solder wire between JP2 (top row middle of the trigger jumper section) and JP7 (top row to the right)
    • Use D14 Appears not to be installed on V3.1 & V3.2. It's a 5V1 zener, shipped in the GenBoard/VerThree/RescueKit rescue2 kit. [D14 Placement] round red-black glass-like barrel. The only difference is that Zener voltage is appr. 5V1 (instead of >100V). On v3.2 D14 is located on the bottom near JP6&JP7, on v3.1 it is located above the LM1815 Top right.
    • Bridge SJ2 (Leftmost in the LM1815 grouping)
    • Leave SJ6 open (found below LM1815 on component side)
    • The Hall GND lead is connected near Pin26 on the EC36 connector.
    • The Hall signal lead is to be connected to Pin 27.
    • The Hall supply is connected to pin 28.
    • Install 270ohm resistor at R142. (solder side between pin 28 and 29 on EC36)
    • Install 220n capacitor at C69 (solder side between pin 28 and 29 on EC36)
  • VR sensor connected to primary trigger
  • If you don't want to take any chances with the sensitive VR sensor you connect it internally. That is at JP8 and JP7. You could also wire it through EC-pins, but be careful, you can experience noise problems
    • Connect sensor+ to JP7 (For these two, a BNC connector mounted to the endplate can be used)
    • Connect sensor- to JP8
    • leave D14 on the board (use it) Appears not to be installed on V3.1 & V3.2 which diode is it? Picture of installed diodes [1]
    • Leave SJ2 open
    • Bridge SJ6
    • If you insist on using the EC36 connector for VR (be careful, could cause noise problems) these extra steps have to be done
      • Solder wire between JP2 (top row middle of the trigger jumper section) and JP7 (top row to the right)
      • The VR- lead MUST be connected CLOSE to Pin26 on the EC36 connector in this case.
      • The VR+ lead is to be connected to Pin 27.
      • Remove R30 (Usually works with R30 still there but if you experience problems you have to remove it. Found to the left of the trigger jumper section.)

Needed for 1st channel [WBO2]:

• Typically a v3.2 board will only need Q18 [pic] installed, but you should check to ensure that the other required parts are installed.
• Typically v3.1 neededs (R51, R32, R35, R46, R49 in Pump1+ installed, but please follow the instructons [here]
• NOTE: if you have a Narrowband O2 sensor DO NOT install R102)
• GenBoard/Manual/WBSensorControllerTesting, WBo2 initial testing + calibration

installed

Map Sensor

• Install it

LED's

• Install R118 (1k), R173 (1k)
• Install 2 LED's of your choice with the Cathode (-) toward U20 (the short leg is the cathode)

WBO2 Calibration

• We decided on a standard WBO2 like the LSU4 VW part(s, there are different cablelenghts). We always used those parts (except some developer experiments). The calibration can just be uploaded, if one measures RCal with a DVM (which is sensor dependent). This cannot be avoided, check the bosch datasheet (actually it can be avoided, with more wiring and more controllertesting - clearly not worths is for a unit that gets new sensor every 100..120000 km). A free-air test is much better though.

• This is where a description of exactly what to do to calibrate your WB02 would go, in the context, of assuming the start state is unknown, and the person doing the calibrating is NOT a developer.

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Ok, all necessary parts are soldered - can I power it up now

• more table testing
• what to check
• etc.

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Firmware update - problems

• In a case firmware upload fails using prog.pl (board doesn't respond) it is possible to force board to stay in bootloader mode instead of trying to load a faulty firmware by shorting serial port RX&TX pins (pins 1&2 in this [picture] or pins 2&3 in DB9 connector) while powering up.
• This is described in [bootloader page]
• Upload firmware without trying to talk with firmware first using perl bin/prog.pl vems.hex :COMn Ew command, without t

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Mike Lough has created a nice

[pinout ] with images for the EC connectorts

This page duplicates information from several other pages - at the very minimum we have to make cross-links to warn about the fact. Yes, but not in a single place. This is the basic howto assemble your v3.2 with v3.1 references and cross links as we find them.

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System Setup

Now that you have your VEMS board built. You problably have many questions about setup. One such walk thru is for the multi-tooth trigger show here

• MultiToothTriggerSetup

Document last modified 2015-01-01 07:00:00

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