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Richard Hamilton

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Everything posted by Richard Hamilton

  1. The diagnostic sheets for the TPS and Throttle Valve show the wiring, and voltage checks. PM on its way.
  2. The PCM takes its time signal from GPS. Is the navigation working properly? This is what the workshop manual says about the time setting after changing a PCM2.1 unit: For vehicle equipment with DVD navigation unit, switch on the PCM in clear surroundings (to load GPS almanac); as soon as four satellites are identified the almanac will reload. The time is updated again when there is a plausible GPS reception (four satellites). The date and time are also adopted once the GPS almanac has been loaded; it may be necessary to change over to summer time (daylight-saving time). This time is transferred to the instrument cluster. If the time is then manually changed by means of the instrument cluster, this time is adopted by the PCM and synchronised with GPS time. There is a screen which shows the number of satellites being received. Maybe also try switching to summer time to see if it will pick up the date. It can take a long time to update the GPS almanac, so be patient and check the date setting after a day or two. As for the sound, I can't help I'm afraid. Are there any on-screen messages? It is going into mute when you first switch on?
  3. You either have PCM2.0 (navigation) or a CDR23 (radio). Neither have user-entry security codes. In both cases, codes are stored in the head unit and in the DME (engine control unit). When you switch the ignition on, the codes are compared, and if they match the radio/PCM will start. It sounds to me like the bluetooth adapter has been incorrectly installed. I would take it back to the fitter, and get them to put it right.
  4. There doesn't seem to be much point in trying to integrate the Bose amp if you aren't sure it is working. You can get a cable to connect the speakers directly to a head unit, provided the unit has speaker outputs, of course. The snag is that Bose speakers are 2 ohm impedance, and most head units (and amps) are designed for 4 ohm speakers. It would work, but the sound quality might suffer.
  5. You can buy the upper part of the remote with the rubber buttons direct from Porsche - about £25. I think the rubber fuel cap strap comes with the cap. About £10.
  6. It is always a nightmare working with non-standard wiring, and it is highly unusual (this side of the pond anyway) for a Porsche dealer to do wiring changes like that. I think you have the right idea to check all the connections and make sure everything is secure. Heaven knows what you will find under all that insulation tape.....
  7. I sent you a PM with a wiring diagram. An "above level" fault code might indicate that the resistance of an airbag unit is high, so check the connections. A bad contact will give you a higher resistance. The control unit uses the resistance of each airbag or belt tensioner unit to check the system. On a PIWIS you can read the resistance in Actual Values, so maybe check that out on Durametric. They should be around 2.5 ohms.
  8. Once you have any air leaks fixed, check the MAF sensor. That is a common fault for lean or rich mixture limits reached on both banks. With the engine idling, the MAF output should read about 14kg/hour, and increase progressively as the revs are increased.
  9. There is only one amplifier. I think you are at the stage where you need to get a diagnostic check by someone with a Porsche tester. I've heard good things about Porschtek in Leeds. Strasse have a good reputation too.
  10. I agree. It sounds like the amp has failed. The amplifier is a separate unit, located in the front luggage compartment. The most economical way is to get a second hand amp. You'll find them on eBay, or try a Porsche dismantler like 9Apart.co.uk. Another good source is boxsterbits.co.uk who often have them in stock.
  11. I haven't had any experience with fitting an aftermarket remote system, but I can't see any reason why you couldn't connect one to the alarm module. If you connect to the same terminals as the door lock key microswitches it should work.
  12. Holy thread resurrection! What mods did you have in mind?
  13. It sounds very much like a tracker unit to me. If you are unaware of a tracker subscription, and if it is connected to a power supply I would remove it if I were you, as they can often be the cause of battery draining.
  14. On RoW RHD cars the seat belt buckles are NOT connected to the airbag module, they are only connected to the instrument cluster. There are separate wiring diagrams for RHD and LHD airbag modules. When PIWIS says "driver's side" on a RHD car, it means driver's (RH) side.
  15. According to PET, the Porsche number for a 1998 RHD RH (Driver's) door lock is 8N2 837 016 B. If you Google that number, you will find it is the same as a variant of the Audi TT.
  16. Look lower down on the page I linked to. You will see the black plastic housing there. The main box is probably tucked somewhere behind the glove box. It think you need to start from the basics. Check the fuses, then check the MOST loop, and that you are getting power to each unit (phone module, amplifier, etc.).
  17. The Dension is a device for connecting an iPod to the fibre optic loop. It emulates the CDC, so that's why it has been bridged out of the loop. There should be two orange optical cables running to the Dension, usually in a black plug. Is it connected?
  18. If the CD Changer isn't getting power, it will cause a break in the fibre optic loop, and there will be no sound and no phone. First check fuses D8, D9, D10, E5 and E8 on the panel in the driver;s footwell. If that doesn't help, check you are getting 12v to the power plug on the CDC witha multimeter or test bulb. If you get 12v there, it may be that the glass fuse on the circuit board of the CDC has blown. It is replaceable, but you have to take the CDC out and take off the covers to access it.
  19. Yes, I have used it with PST2, PIWIS1 and PIWIS2, albeit only once with PIWIS2. Personally, I prefer to use PST2 or PIWIS1 with the 993, as the software is Bosch based.
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