Ignition Coil Pack Wiring - Laguna I - V6 3.0 (Z7X)
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Thread: Ignition Coil Pack Wiring - Laguna I - V6 3.0 (Z7X)

  1. #1
    Tadpole
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    Default Ignition Coil Pack Wiring - Laguna I - V6 3.0 (Z7X)

    Am trying to Megasquirt 3.57 a Laguna I 3.0 V6 (Z7X engine code, PRV) but am having trouble making the ignition coil pack spark on a test bench (first timer).

    There are 3 pins on the coil pack:
    Pin 1 = has a "+" sign
    Pin 2 = unmarked
    Pin 3 = has a "-" sign

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    I have tried wiring it up with 12V (switched and fused) power into pin 1, Megasquirt Spark (0-5V) signal into pin 2, and battery ground into pin 3. Layed both spark plugs on a screwdriver and connected the screwdriver to battery ground. The MS3X harness ground wire was grounded at the battery (from DIYAutotune). Coil was warm after I was done trying to test it.
    Uncertain if this logic is correct as it is my first playing with electrical components.

    I have no idea if what I am doing is correct because there is little information that I have found to confirm what the pins are. The Magneti Marelli technical document for the part says that Pin 1 = supply, Pin 2 = capacitor, and Pin 3 = command. I am not sure how to interpret this.

    How should I be wiring it up? How do I make the damn thing spark?

    I am aware that there is the chance that spark plugs/coil pack/leads are dead...

    Link to the part below with wiring diagram:
    http://www.magnetimarelli.com.cn/sit...1_rev7.0_p.pdf

    Many thanks

  2. #2
    Fellow Frogger! Bluey's Avatar
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    3 pin coils run +12V, Earth (to cyl head) and trigger from the ignition module

    Pin 1 with "+" will need +12V fed to it (Supply)
    Pin 3 with "-" will be the trigger from the ignition module, switched by the ECU. (Command)

    Check with a multimeter for resistance between pins 1 & 2. If there is enough resistance not to trigger the buzzer on a continuity test then I expect pin 2 should go to earth. (Capacitor)

  3. #3
    Demannu-facturing! Demannu's Avatar
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    Are you sure you have the symbology and pin numbers aligned correctly?

    According to the Renault wiring diagram for the Z7X engine:
    Pin 1 - Suppressor capacitor (to earth)
    Pin 2 - 12V
    Pin 3 - Switched earth trigger from ECU

    You will need separate coil drivers for these coils. The 0-5v Megasquirt signal will not drive them. I fitted 3x BIP373 drivers. Cheap and effective.
    Last edited by Demannu; 1st March 2018 at 08:38 AM.
    Scotty

    Melbourne - Dandenong Ranges

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  4. #4
    Tadpole
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    Thanks to both of you guys for your knowledge.

    I have the pre-assembled MS3 with the MS3X card, the DIYAutotune website recommends getting the Quadspark ignition module for my pre-assembled box as adding the Bosch drivers in is apparently not particularly simple on their box.

    So as it stands I'll buy the Quadspark and give that a go with Demannu's suggested pins...will update in a couple weeks.
    (Was nearly going to go LS1 coils!)

  5. #5
    Demannu-facturing! Demannu's Avatar
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    LS1 coils may be a cheaper and neater solution. They have a built-in igniter, and would work with your 5v logic level trigger signal.
    Scotty

    Melbourne - Dandenong Ranges

    1956 Peugeot 403 - 'Francois' - resto project

    1969 Peugeot 504 - 'Pascal' - daily driver project

    1970 Peugeot 404 Utility - 'Brutus' - resto project

    1978 Peugeot 604 - as yet unnamed - V6 on straight LPG

    1987 Peugeot 505 - as yet unnamed - project car

    1999 Peugeot 406 Coupé - 'Chloe' - 5 speed manual

    2011 Peugeot 3008 XTE HDi - 'Zoe' - hatchback on steroids

    2014 Peugeot RCZ - 'Remy'

    1999 Range Rover 4.6 HSE - 'Grover' - tow car

  6. #6
    Fellow Frogger! Bluey's Avatar
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    Quote Originally Posted by gmar3040 View Post
    adding the Bosch drivers in is apparently not particularly simple on their box
    Sounds like BS to me. Regardless of what module you use, all you need are the three trigger wires from the ECU going to the module, three wires from the module to the coil "-" and an earth from the module,

    You only need a 3 channel mod. For reference, a generic bosch 7-pin BIM203 can be had new for about $100. A new matching plug & pins is $22.
    Demannu likes this.

  7. #7
    Tadpole
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    I fitted a Z7X engine with ecu from a '96 laguna 1 into a Peugeot 504 cabrio '76. Need pinout wiring diagram of the Siemens ecu, especially of the wires not connecting directly engine and ecu to make it work. Can anyone out there help ?
    Last edited by PRV-Z7X; 27th March 2018 at 07:54 PM. Reason: spelling

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