p0850 code 2012 ms3

Discussion in 'Mazdaspeed 3 Troubleshooting' started by silas, Feb 22, 2020.

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  1. silas

    silas Greenie N00B Member

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    just got this code says park/neutral switch input circuit and a pcm code. only mods i have is the cobb AP and corksport intake. Where should i start?
     
    silas, Feb 22, 2020
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  2. Ssinstaller

    Ssinstaller Greenie Member

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    At the neutral position switch in the transmission.
     
    Ssinstaller, via a mobile device, Feb 22, 2020
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  3. Awafrican

    Awafrican Moderator Gold Member

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    Also check the connection & harness going to the transmission
     
    Awafrican, via a mobile device, Feb 22, 2020
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  4. Ssinstaller

    Ssinstaller Greenie Member

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    The wire to test is in pin 1s(it's voilet)at the ECM. Should have 12v when the transmission is in any gear, and drop to ground in neutral.
     

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    Ssinstaller, via a mobile device, Feb 22, 2020
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  5. silas

    silas Greenie N00B Member

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    where is the switch located?
     
    silas, Feb 22, 2020
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  6. Ssinstaller

    Ssinstaller Greenie Member

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    The switch is on the transmission.
     
    Ssinstaller, via a mobile device, Feb 23, 2020
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