Question about 2007 Suzuki Forenza Sedan

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  • gregoryd_hea Sep 27, 2010

    thanks taking it to the shop, or can i do this myself? Where is the part located on the car?

    Next question both my car remotes will not work.... i use to leave my key in the ingition all the time and that key stoped working and the other one would not, now both remotes will not arm or diarm the car...

  • gregoryd_hea Sep 27, 2010

    thanks for the information, but what is a PCM?

    Next i just got bac form the shop and another code has poped up PO404, give me details to check, clean or repace.

  • gregoryd_hea Sep 27, 2010

    well i unpluged the battery and it did not work.



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P0650 Malfunction Indicator Lamp (MIL) Control Circuit

This indicates that a malfunction in the control circuit that monitors devices and turn on the MIL has been detected. Often the problem is only temporary, if it does occurr with regularity, the PCM may need replacement. Here the problem explained.

P0705 Transmission Range Sensor Circuit Malfunction (PRNDL Input)

Usually the TRS (transmission range sensor) must be replaced. Common problem on Verona and Forenza.

The TRS job is around $200/$250. The PCM is expensive. I think there is a long warranty on the TRS, up to 7 years. Contact the dealer and find out if it does apply.

Posted on Sep 27, 2010

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  • Ginko
    Ginko Sep 27, 2010


    TRS is located on top of the transmission switch, operatedto the transmission switch lever.

    Here procedure:


    1. Disconnect the negative battery cable.

    2. Disconnect the park/neutral position switch electrical connector.

    3. Disconnect the shift control cable and the retaining clip.

    4. Remove the shift lever nut and the shift lever.

    5. Remove the park/neutral start switch. Installation Tools Required: DW260-050 P/N Switch Installer


    1. Install the park/neutral start switch.

    2. Tighten the bolts to 10 Nm (89 inch lbs.) .

    3. Adjust the park/neutral switch using the P/N switch installer DW260-050.

    4. Install the shift lever and the shift lever nut.

    5. Tighten the shift lever nut to 10 Nm (89 inch lbs.) .

    6. Connect the shift control cable and the retaining clip.

    7. Connect the park/neutral position switch electrical connector.

    8. Connect the negative battery cable.

  • Ginko
    Ginko Sep 27, 2010

    Hi I uploaded a bulletin with the job done on a Forenza. I don't have the Verona one, but the job is done the same way.

    Click here to open.

  • Ginko
    Ginko Sep 27, 2010


    Thanks for the feedback. I forgot to comment about the remotes not working. Check the battery just in case. Remotes that both stopped working in cohincidence of a code concerning PCM is not a good sign.Try resetting PCM by disconnecting batteries. You may be asked stereo code after disconnecting.
    If problem comes back, PCM may also have a problem.

    Good luck with the repair.


  • Ginko
    Ginko Sep 27, 2010

    My last comment was a bit confused.

    Note: check remote batteries and change them to reset the remote. Disconnect car battery terminals to reset PCM.



  • Ginko
    Ginko Sep 27, 2010


    P0404 is Exhaust Gas Recirculation (EGR) Circuit Range/Performance, it is the system that recirculates gases from the exhaust back in the engine through a valve.

    The PCM (powertrain control module) is the car main computer, also called ECU or ECM.



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