I have access to wiring diagrams for any vehicle available in North American 1983-present. Sometimes I can cross it over to Rest Of World cars. If you need schematics for anything, feel free to email me. alandaeric at hotmail dot com
TODO: update all the pages to reflect uptodate status. Delete all old info, or move to a separat history page.
- MembersPage/EricN/BoardSetup-step by step of putting my board together
- MembersPage/EricN/WBSensor - Testing and config
- MembersPage/EricN/Trigger - inputtrigger
- MembersPage/EricN/Ignition - ignition advance, ignition output and coil related knowledge
- MembersPage/EricN/FuelPage - Injector and fuel setup and config
- MembersPage/EricN/Sensor - sensor info
- MembersPage/EricN/Config - complete config and tables
- MembersPage/EricN/BuildNotes : scraps of info not organinzed
ITS DEAD
Tried to start the truck the other day
- MegaTune comm works
- LCD works
- no rpm signal or wheel error
- no fuel pump activity (untill I hit the brake pedal, then it wouldnt shut off) nothing working as far as I could tell.
- Put the ecu on my test bench, all sensors readings look fine in megatune, I can upload firmware, everything looks ok untill I try and do an mdh command.
- I noticed the fuel pump channel doesnt turn on. Tried some other channels, none of the P259 channels work at all
- I went out to the truck to check the wiring, found 1 wire ripped out of ecu, the EC36 pin 26 ground wire. Connected.
- Disabled all the channels since mdh.. can only control free outputs.mdh can not manipulate channels that are enabled in config and therefore reserved => controlled by the ECM and tested with the mdhcommand.
- All the I259 channels are good 0v when off and 4.93v when on (using logic level trigger for coils with built in amplifier)when measured to gnd.
- All s259 channels seem good OFF .54V ON 11.63v
- All P259 show 0V all the time When measured to 12v
- Tried to check the injecter fets but I have never been able to comprehend that table look up system, I only used 2 and have 8 in place so if 2 are dead, I dont care, I have the other 6 free
- Read GenBoard/Manual/DigitalOut, GenBoard/Manual/DigitalOut/Table (ask there if you don't understand sg.) With h[0]=01 02 04 08 10 20 40 80 you get a 1-1 mapping,so mdh80/mdh00 touches injA, mdh90/mdh10 touches injB, and so on
- Tested wbo2, tested to ground mde 02 slowly but eventually gave me 4.93v on the FET pin closest to the ec36 connector, the other 2 FET pins were 0v. In relation to power, they were 11.67v when all said and done at the 2 furthest away from the ec36 and 1 shuts off with mde00, basically, that fet is ok and circuit working.
- We use multiple gnd5 pins. (good!)
- is it ok to use multiple gnd pins too or would that cause noise issues?
- multiple GND are good, it will NOT cause noise problems if the sensor GND (most importantly VR-) is connected near the EC26pin26 (not in the GND5 current path)
New P259 chip on order (2 actually, 1 for next time)
MY PROJECT
Ford 347 stroker- on hold,(taking to long to build car)
Temporarily putting it in a 61 404 unimog, mercedes 2.2l straight 6.
- Standard GM map sensor
- Standard Honda ect sensor
- Standard Honda air temp sensor
- No iac, just ignition advance idle control
- Bosch WB 02
- No knock sensor yet
- No egt sensor
- 24-1 vr sensor mounted in old distributer
- LS1 cnp coils