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Nissan Patrol Y61 CAN Flash Information The UpRev Cipher cable uses two different channels of communication with the ECU: 1) ISO 14230 KLine (single wire) 2) CAN bus (two wires: high and low) For fastest reflash times, both communication channels must be present, and a reflash only takes about 1 minute. If CAN bus is not available, the ECU can still be flashed entirely over the KLine with no hardware modification necessary, but this reflash process is slower (about 15 minutes instead of 1 minute). The purpose of this document is to provide information to anyone who would like to enable CAN communication with their ECU. All modifications described below are entirely optional, and only serve to make the reflash process faster. There are two possible issues with CAN bus on Patrol ECUs: 1. The wires are not connected from OBDII port to the ECU. From what we have seen, this is an issue on all Y61 Patrols. 2. Some ECUs are missing a CAN transceiver chip which is necessary for CAN communications. This is only on some Y61 Patrols. We do not know exactly which vehicles are missing this chip, but we suspect that it is only on vehicles without electronic throttle. Both of these issues must be addressed to enable faster ECU reflashes.

Nissan Patrol Y61 CAN Flash Information - UpRevuprev.com/UpdateFiles/software/PatrolFlashingInformation.pdf · This is only on some Y61 Patrols. We do not know exactly which vehicles

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  • NissanPatrolY61CANFlashInformationTheUpRevCiphercableusestwodifferentchannelsofcommunicationwiththeECU: 1)ISO14230KLine(singlewire)2)CANbus(twowires:highandlow)Forfastestreflashtimes,bothcommunicationchannelsmustbepresent,andareflashonlytakesabout1minute.IfCANbusisnotavailable,theECUcanstillbeflashedentirelyovertheKLinewithnohardwaremodificationnecessary,butthisreflashprocessisslower(about15minutesinsteadof1minute).ThepurposeofthisdocumentistoprovideinformationtoanyonewhowouldliketoenableCANcommunicationwiththeirECU.Allmodificationsdescribedbelowareentirelyoptional,andonlyservetomakethereflashprocessfaster.TherearetwopossibleissueswithCANbusonPatrolECUs:

    1. ThewiresarenotconnectedfromOBDIIporttotheECU.Fromwhatwehaveseen,thisisanissueonallY61Patrols.

    2. SomeECUsaremissingaCANtransceiverchipwhichisnecessaryforCANcommunications.ThisisonlyonsomeY61Patrols.Wedonotknowexactlywhichvehiclesaremissingthischip,butwesuspectthatitisonlyonvehicleswithoutelectronicthrottle.

    BothoftheseissuesmustbeaddressedtoenablefasterECUreflashes.

  • 1)WiringtheOBDPortTwopinsmustbeaddedtotheOBDIIport,andwiredtotheappropriatepinsontheECUharness.CANHigh:ECUHarnessPin174>OBDIIPin6CANLow:ECUHarnessPin171>OBDIIPin14Seethefiguresbelowforpinlocations

    OBDIIPort

    ECUHarness

  • 2)CheckingforCANTransceiverchipSomePatrolECUsaremissingtheCANtransceiverchipandsupportingcomponents.WehavenotbeenabletoverifywhichoneshaveordonothavethischipforeveryPatrolECUpartnumber. TocheckifthechipexistsonyourECU,disconnecttheECUfromthevehicleandremovethe4screwswhichholdcoverplateontheECU.Oncethecoverisremoved,compareyourECUtotheimagesbelowtodetermineifCANtransceiverispresent.IfyourECUismissingthischipandyouwishtoaddit,[email protected]omformoreinformationaboutthisservice.

    CANTransceiverispresent

    mailto:[email protected]

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