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  1. #1
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    clio 172 no spark

    i have a clio 172 in at the mo it has no spark on all 4 cylinders
    changed the coilpack still no spark
    changed the crank sensor/tdc sensor still no spark
    put a code reader on and heres what came up

    df271 actuator relay output voltage,open circuit or short circuit [active]
    df271 actuator relay output voltage,open circuit or short circuit [memory]
    df012 injection->ac connection [memory]
    df 009 actuator relay control circuit,opencircuit or short circuit [memory]

    i think it something to do with the ecu

    any advise would be good

    i have no history about the car
    i was told the car run fine before
    it had been park up for around 3 months and now will not start

    thanks

  2. #2
    Non-member Matt@CodeRedMotorsports's Avatar
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    Re: clio 172 no spark

    Phase 1 or phase2/3 172?

  3. #3
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    efi-parts.co.uk
    Scoff's Avatar
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    Re: clio 172 no spark

    The actuator relay is just the latch relay that powers up the injectors and so on. There is another relay for fuel pump and ignition coil. The ECU latches those to ground as and when it wants them on.

    You want to check the relays for operation, make sure they are clean and not corroded, etc. Both the actuator relay and fuel pump relays should be ON while cranking.

    You can check the operation of the fuel pump relay by watching the voltage on pin 3 of the coilpack while cranking. It should go to +12v. You can check the operation of the actuator relay by watching the voltage to the injectors while cranking.

    If the relays look OK then it could be a case of crappy wiring somewhere or less likely a problem with the ECU itself. Hope that helps

  4. #4
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    Re: clio 172 no spark

    Quote Originally Posted by Scoff View Post
    The actuator relay is just the latch relay that powers up the injectors and so on. There is another relay for fuel pump and ignition coil. The ECU latches those to ground as and when it wants them on.

    You want to check the relays for operation, make sure they are clean and not corroded, etc. Both the actuator relay and fuel pump relays should be ON while cranking.

    You can check the operation of the fuel pump relay by watching the voltage on pin 3 of the coilpack while cranking. It should go to +12v. You can check the operation of the actuator relay by watching the voltage to the injectors while cranking.

    If the relays look OK then it could be a case of crappy wiring somewhere or less likely a problem with the ECU itself. Hope that helps

    thanks for all the info
    i will look in to it
    best regards

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