406 & Proxia fun...
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  1. #1
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    Default 406 & Proxia fun...

    Our 406 D9 SV manual flashes "Catalytic Converter Fault" about 2 minutes after starting, and the ECU drastically reduces available power - probably by "switching off" some coil packs.

    Now because power is normal at startup, I assume the cat is not actually blocked, but problem will be plugs &/or coil packs. In fact disconnecting the electrical connector from the coil nearest the gearbox makes no difference to the idle speed, so I may have my culprit!

    Now we come to problem 2! I pulled out the trusty Windows XP laptop & Proxia gadget and connected it up, in the hopes of determining how many coil packs were faulty (or if there are other problems), and it will not communicate with the car's computers! I have not used this device for several months, but it worked perfectly last time I needed it.

    I connect the device to a computer USB port and to the the car's diagnostic port (next to master switch for cruise control). The device's little green light glows! I launch "Peugeot Planet Office", then select 406, then 406R (R is for "Refresh" - picture shown is clearly a D9), select "Peugeot Planet 2000", enter build number (which is all it asks for), then choose "ECU Configuration & Services". After that, nothing works! Whether I chose "Global Test", or "Test by ECU" there is absolutely no response - no communication with car ECUs.

    In fact it behaves exactly the same if not plugged in to the car's diagnostic socket, so it looks like a connection problem, but I can't see what I'm doing differently this time!! Is there a fuse in either the car or the Proxia that might have blown / have bad connection??

    Cheers

    Alec

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  2. #2
    Contented Peugeot Driver addo's Avatar
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    Default

    Does your interface work on any other cars?

  3. #3
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    Default

    In the light of day that's the obvious question, but I've never been able to get it to work on the 605, and the Xantia has no battery. I do have a couple of friends with 307s (and it has worked on a 307 in the past), so that gives me a few options.

    If the wretched thing has blown up after so little use I won't be happy .

    In the mean-time, am I right that I can diagnose faulty coil packs (for the front bank anyway) by disconnecting one at a time and listening for a change in revs? I know this works with plug leads from a distributor (plus you can check whether there's any spark or not), but am less familiar with these new-fangled electronic gizmos ...

    Cheers

    Alec

  4. #4
    Contented Peugeot Driver addo's Avatar
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    You can probably try that old school test for the coil packs, but only for a very short time.

    Check your OBD socket for ground at 4&5, Battery voltage (always on) at 16, and key-on voltage at 1.

  5. #5
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    Default

    OK - a set of plugs and 3 coils on the way.

    Can someone give me an estimate of the time needed to remove and replace the intake manifold on a D9 406 SV (ES9J4S motor)? Also what tools are required? I am (I hope) a reasonably competent amateur, and can acquire any non-specialist tools I don't have...

    (No progress on Proxia/PP failure - so long as current problems are limited to plugs & coils I should manage without for now...)

    Cheers

    Alec

  6. #6
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    Default Why wasn't I told!!!!

    Well I decided to have a go at removing the manifold. No problem, except that I've broken off a coolant pipe on top of the "degassing tank" .

    Great idea not having bleed screws, but why did they have to make the spigot so small and weak!!!!!

    Apart from that, everything went smoothly, and I've even found an obvious problem - 2 spark plugs had cracked porcelain! Any wonder the computer was complaining.

    Don't suppose anyone near Armidale is wrecking a D9 SV ....

  7. #7
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    Well I've come up with a quick & dirty temporary fix - a self-tapper wrapped in plumber's tape. It's currently screwed in loosely, engine running, air bubbles coming out nicely .

    So I think I've invented the bleed screw .

    Cheers

    Alec

  8. #8
    Tadpole
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    Default

    Alec, I have the same car (SV 406 manual) as you. A great model! I had a new degassing tank fitted at the last service. I don't think it was very expensive - $35 or so.

    Peter

  9. #9
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    Thanks Peter. Have now traveled several hundred km (spent weekend at the Blue Mts Music Festival), & so far my bleed screw is working fine.

    Other problems: reached the Sydney end of Newcastle freeway - had just entered 80 kmph zone - and engine suddenly cut out .

    Strong smell of petrol on lifting bonnet... Found that fuel hose connector had popped off!!! Appears I must have bumped the push-in latch while replacing the manifold. How it stayed in place all the way from Armidale to Sydney, only to pop off when we had slowed up and there was a good safe place to pull over, is beyond comprehension .

    Now I have found a screw in one of this car's brand new tyres .

    Oh well - the combination of new NGK platinum plugs (also replaced coils for rear bank while manifold was off) and new C-Drive tyres has transformed the car. A new degassing tank will be fitted in due course. Some smash repairs (Curse of the White Ute strikes again), replacement door locking mechanism and a set of engine mounts will see this car nearly perfect. How the NRMA can only value it at $2,900 for insurance purposes is just beyond me.

    Cheers

    Alec

  10. #10
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    Well I've tried my Proxia/Peugeot Planet on son's 307 - worked perfectly, read the VIN & chassis number from the car, communicated with all ECUs.

    Tried it again on the 406 - nothing! No response from any ECU.

    Now it's a D9 406, so I choose 406R (Refresh?), which has the correct grille in the picture. It asks me for build code, which I read off the sticker on the A pillar. Doesn't ask for VIN, doesn't read VIN from the car .

    I have inspected the car's diagnostic plug - it falls out of socket in lower dash, but shows no sign of damage/lose connections. Will try Addo's multimeter test when I next have access to one...

    Any other ideas? This used to work - I have used this exact piece of equipment on this 406 previously with great success (although it wasn't too good at telling me why my aircon wasn't working...).

    Cheers

    Alec

  11. #11
    sans witticism SLC206's Avatar
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    You could try the other option (ie. not a 406R).
    Regards,

    Simon

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