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Thread: connection problem

  1. #1
    Junior Member
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    Default connection problem

    I tried connecting efilive V1 for the first time and get the error

    efi live cannot communicate with the pcm
    disconnect the scantool if it is selected
    please turn off the ignition, check all cables, turn on the ignition and try again

    I have EFI Flashscan FSP in my device manager
    cigarette lighter outlets work
    V7.4.2
    GENIII 97/98 pcm (its a 98 LS1)

    What am I doing wrong?

  2. #2
    Lifetime Member Doc's Avatar
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    Default

    Which software ver are you running? Do you have the 97/98 engine controller selected? I think the default is for 99+up

    2000 Silverado Full Size 4x4: Forged 6.2, H/C F1R Procharger
    98A4 Z28: 02 PCM H/C Forged 347, 9" Moser 3.73
    V1 V2 99+up RR COS #5 OLSD Dual Stg N20
    www.efialchemy.com
    www.greatamericancarwar.com

  3. #3
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    Default

    I also have a 1998 and have also had occasional connections problems since I installed V7.4.2 and the newest V1 driver. I thought it was a coincidence (and maybe it is) until I saw this thread.

    I get one of the two explanations

    EFI Live cannot communicate with the PCM

    No interface detected

    Doc – I have the correct PCM selected

    John

  4. #4
    Junior Member 98ls1blackbird's Avatar
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    What I have to do on my 98 is:
    Turn key on
    Connect OBDII connector
    Connect USB cable
    This usually works for me. Oops, I have a V2, dont know if that makes a diff or not. This post may be of no value at all.
    1998 Trans Am, A4,3.73, SLP ported 98 heads,Lid, Free mods, LCA's, Panhard bar, adjustable torque arm, sfc's 3200 Vigilante converter, BFG DR's, tuned with EFILive.
    12.53@107.78 1.71 60'
    2002 GMC Envoy totatlly stock
    2003 Workhorse 8.1L

  5. #5
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    18:43:31.859: Scanning for EFILive FlashScan V1 USB
    18:43:31.859: Autodetect interface ...
    18:43:31.890: Current protocol set to: "SAE J1850 VPW"
    18:43:32.296: Interface firmware version: 1.2.17
    18:43:32.296: Connection to [FSP] interface is OK
    18:43:32.296: Autodetect PCM...
    18:43:32.843: PCM not detected.
    18:43:32.843: Autodetect ECM...
    18:43:33.375: ECM not detected.
    18:43:33.375: Autodetect TCM...
    18:43:33.906: TCM not detected.
    18:43:33.953: Interface firmware model: FSP
    18:43:33.968: Interface firmware version: 1.2.17
    18:43:33.984: Interface firmware date: Jan 18, 2005
    18:43:34.015: FlashScan serial number: 003601369227
    18:43:34.437: Initialising PIDs...
    18:43:34.671: Initialising Modules...
    18:43:34.671: Ready.


    Does this tell anybody anything? I select 97/98 GEN III as the controller. I uninstalled the usb driver and software today and re did it. I am getting very frustrated. Sometimes the lights on the box flash or come on. Will the scan part of this recognize my 2006 Trailblazer 4.2I6?

  6. #6
    Joe (Moderator) joecar's Avatar
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    Something is wrong between your V1 and your PCM:
    - is PCM powered...?
    - is OBD-II port powered (I see you said the cigar lighter fuse is good)...?
    - is cable from V1 to OBD-II port good...?
    - is wiring from OBD-II port to PCM good...?

    Is there another F-body you can try the scantool on...?

    In any case, you may want to check the PCM fuse(s).

  7. #7
    Joe (Moderator) joecar's Avatar
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    Default

    I believe you need V2 to scan your 2006 TB.

  8. #8
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    Quote Originally Posted by joecar
    I believe you need V2 to scan your 2006 TB.
    Yes you do, the P11 and P12 PCMs are scannable only with V2, the P10 (02-05 TBs) can be done with V1.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

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