Pecky's Vauxhall Decoder

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  1. #1
    Member adam2505's Avatar
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    Oct 2013
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    Astra MK5 1.7CDTi

    Astra H CC Fitting - Fault Codes Given

    Good Afternoon Everyone,

    Just fitting my CC.

    Stalk change OK
    Clutch switch present & registered correctly in OPCOM blocks.
    OPCOM programming done on Engine, CIM, Instruments.

    Took it for a spin & couldnt get it to activate,

    The CIM is given the fault codes of:

    B3794-08 Cruise Control "Set" Switch Circuit Resistance Range / Performance
    B3840-00 Wrong Stalk Switch Configuration.

    I have a 2007 Astra H 1.7CDTi.

    Any advise would be massively appreciated.

    Adam


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    • #2
      VIP domtorredo's Avatar
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      Hull, East Yorkshire
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      Peugeot Expert
      Quote Originally Posted by adam2505 View Post
      Good Afternoon Everyone,

      Just fitting my CC.

      Stalk change OK
      Clutch switch present & registered correctly in OPCOM blocks.
      OPCOM programming done on Engine, CIM, Instruments.

      Took it for a spin & couldnt get it to activate,

      The CIM is given the fault codes of:

      B3794-08 Cruise Control "Set" Switch Circuit Resistance Range / Performance
      B3840-00 Wrong Stalk Switch Configuration.

      I have a 2007 Astra H 1.7CDTi.

      Any advise would be massively appreciated.

      Adam
      could you check in measuring blocks in op com if you can get it active

    • #3
      Member adam2505's Avatar
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      Vehicle
      Astra MK5 1.7CDTi
      The CC Blocks I've found didnt change when I pressed the CC stalk controls, although that matches it thinking I have the wrong stalk.

    • #4
      VIP domtorredo's Avatar
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      Hull, East Yorkshire
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      Peugeot Expert
      could be missing wire from passenger footwell to fuse box
      stalk for zafira b and astra h is same dont think if different would fit

    • #5
      Member adam2505's Avatar
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      Astra MK5 1.7CDTi
      How much pain is involved if it is the wiring missing?

    • #6
      VIP domtorredo's Avatar
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      Quote Originally Posted by adam2505 View Post
      How much pain is involved if it is the wiring missing?
      i had mine missing soldered it its just a 1 wire
      longest part was to remove panels and fuse box but had it done in 30 min

    • #7
      VIP domtorredo's Avatar
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      B3840-00 this dtc looks bit strange as it looks like some coding is missing or op com just showed successful but not programmed

    • #8
      Site Owner pecky's Avatar
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      Wolverhampton, United Kingdom
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      Insignia 2.0 Biturbo 4x4
      Quote Originally Posted by adam2505 View Post
      although that matches it thinking I have the wrong stalk.
      Certainly not, seeing as I sold it to you.

      Quote Originally Posted by adam2505 View Post
      Good Afternoon Everyone,

      Just fitting my CC.

      Stalk change OK
      Clutch switch present & registered correctly in OPCOM blocks.
      OPCOM programming done on Engine, CIM, Instruments.

      Took it for a spin & couldnt get it to activate,

      The CIM is given the fault codes of:

      B3794-08 Cruise Control "Set" Switch Circuit Resistance Range / Performance
      B3840-00 Wrong Stalk Switch Configuration.

      I have a 2007 Astra H 1.7CDTi.

      Any advise would be massively appreciated.

      Adam
      Have you tried clearing the fault codes?

      It does not activate with any codes present.

      B3840-00 Wrong Stalk Switch Configuration. is only ever present when a cruise stalk is fitted and it isn't programmed correctly.

      OPCOM isn't perfect, try programming it again.
      Richard Peck
      www.diagnostics.org.uk

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