KVM2007 Posted March 25, 2019 Report Share Posted March 25, 2019 The reason for the repair was the lack of ADC TLC2543 readings. In the circuit highlighted in red was a positive signal overload of an unidentified source. I could not find any other connections to this circuit. After raising the pins of the chips on the PCB, the ADC work was normalized, but there was a specified error. I don't know which nodes hardware block 1 belongs to and where else to look for the source of the problem. If anyone has access to the schematic diagram, please check if the chain is highlighted in red in another connection somewhere else, or is it a defect of the PCB. Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 26, 2019 Report Share Posted March 26, 2019 As far as I know hardware error block 1 is related to error on the SPI bus. I think you will be best to return the ECU to us for repair, typically it will only be a NZD$150 service fee for a repair like this. Quote Link to comment Share on other sites More sharing options...
KVM2007 Posted March 26, 2019 Author Report Share Posted March 26, 2019 Thank you, but we have very little time before the race and we will not have time to prepare the car. We are from Georgia (not US state). I will try to carefully analyze the SPI bus Quote Link to comment Share on other sites More sharing options...
Simon Posted March 27, 2019 Report Share Posted March 27, 2019 This error is not an easy one to trace as the SPI is used all over the board. Its likely a broken Viar or a broken solder joint. Quote Link to comment Share on other sites More sharing options...
KVM2007 Posted March 31, 2019 Author Report Share Posted March 31, 2019 The cause of the problem remained unknown, but the error was resolved. Pin 4 ST10F269-Q3 used as CS3 keeps the low level all the time (CS3 - good. If I raise the pin 4 then it takes the High level in the Reset state). This causes a bus conflict. Disabling pin 3 74ACT125-1 eliminated the conflict. But the unknown source of the signal coming to pin 2 is now excluded from operation. I couldn't find this source. What now does not work remains unknown, but there are no errors. Quote Link to comment Share on other sites More sharing options...
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