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Thread: B0670 and P0650 - error codes

  1. #1
    Regular Member CristianTM's Avatar
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    Default B0670 and P0650 - error codes

    Hello,

    One of my neighbourhood have Vectra-C from 2004.
    On display occur the Service indicator.
    After diagnose the entire car, result the next error codes:

    B0670 - Airbag Telltale Circuit Malfunction - that means the LED of Airbag don't turn on

    P0650 - Malfunction Indicator Lamp (MIL) Control Circuit Malfunction - that means the LED of Check Engine don't turn on

    OK, I bring out the instrument panel and make tests and measurements.
    On the connector from instrument panel exist two wires, on pins 6 and 12 which must power these LED's. But from where ? and How ? I don't know !

    If somebody have the explanation of this connector, I ask for Help.
    If somebody knows where go the cable from the instrument panel, I ask for Help.
    If somebody have it in the past this problem, I ask also for Help.
    If somebody have ideas, comments, suggestions, please write to me.

    The connector from the instrument panel have 12 pins:
    1 2 3 4 5 6
    7 8 9 10 11 12

    These: 2,3,7,9 and 10 are unused and 1,4,5,6,8,11 and 12 are used.
    Also, in this connector, join the next wire colors: red, yellow-brown, black,green, green,yellow-grey, brown.

    As I said, pins no. 6 and 12 have something to do with LED of Airbag and LED of MIL.
    For sure, I have one +12V, one Ground, one CAN-L and CAN-H, the two suspect wire :6 and 12 and also one unnamed wire.

    I waiting your messages.
    Best Regards,

    CristianTM.

  2. #2
    Admin plasma's Avatar
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    Reformatting the computer tonight once done I'll try to dig into the info for you.

  3. #3
    Regular Member CristianTM's Avatar
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    News: I found the configuration of pins.

    Pin1, Brown = GND
    Pin4, Red = + 12V (from fuse F117)
    Pin5, Pin6, the green wires = CAN-L + CAN-H
    Pin 8, yellow-grey = from BCM (Body Control Module)
    Pin11, Black= +12V, comes from fuse F126
    Pin12, yellow-brown = from the Engine

    CristianTM.

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    Hi. Did you ever find a cure for the p0650 fault? I've had it intermittent for a while, but is now on permanently. There seems to be a few people with this problem, but not many fixes.

    Cheers, Chris

  5. #5
    Regular Member CristianTM's Avatar
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    Check FI26 = 7,5A (Instrument Panel Body Electrical). If is OK then bad contacts on X1 or X4 connectors.

    CristianTM.

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    Cheers Cristian. Will take a look on my next days off.

    Cheers, Chris

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    Hi Cristian.
    Problem solved. Turned out to be a dry joint on the speedo pcb connector. Thanks for pointing me in the right direction!

    Cheers, Chris

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    Hi,
    I have an Vectra GTS 2.2 DTI and the same problem like you : error code P0650 and the LED of Check Engine don't turn on...
    I have unmount the instrument panel and unplug it...
    But how to open the instrument panel and find this "dry joint" ?
    Can you help me ?
    Thanks a lot,
    Cheers.

  9. #9
    Regular Member Robsey's Avatar
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    Quote Originally Posted by CristianTM View Post
    News: I found the configuration of pins.

    Pin1, Brown = GND
    Pin4, Red = + 12V (from fuse F117)
    Pin5, Pin6, the green wires = CAN-L + CAN-H
    Pin 8, yellow-grey = from BCM (Body Control Module)
    Pin11, Black= +12V, comes from fuse F126
    Pin12, yellow-brown = from the Engine

    CristianTM.
    Just for clarification

    Pin 1 - Brown - Ground
    Pin 2 - Red - Fused battery live = Fuse FI 17
    Pin 5 - Green - Low Speed CAN High to CIM
    Pin 6 - Green - Low speed CAN High to BCM
    Pin 8 - Yellow/grey - Illumination wire from BCM
    Pin 11 - Black - Ignition controlled live from BCM = Fuse FI26
    Pin 12 - brown/yellow - engine malfunction signal from Engine ECU.

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    Regular Member Barlow's Avatar
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    This thread really needs sticking. Old but gold.
    If I saw this before changing my cluster it would have saved me a few £££

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