Control Modules Gen 1 Cayman S

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Buddy
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Buddy PCGB Member
2015/02/01 18:37:53 (permalink)

Control Modules Gen 1 Cayman S

Information supplied by Richard Hamilton but for some reason it failed to copy to the FAQ Section so copied and reposted not my work at all, thanks to Richard for this useful information


It is a little difficult to list what each Control Model does, because the inputs and outputs on each module aren't always related to the module itself. For example, the front lid release switch (input) is connected to the Vehicle Electrical System Network module, but the release solenoid (output) is connected to the Front control module. The gateway module seems to be the one which sorts out which control units talk to each other via the CAN bus. So I have listed the OUTPUTS on each module, so you can see where the devices get their supply from.

FRONT CU
All front lights, including Litronic adjusters
Front luggage compartment lock
Front luggage compartment light
Hazard warning lights
Horn
Cooling fans (via a separate blower control module)

NETWORK CU (Vehicle Electrical System)
Fuel flap
Seat heaters
Wipers (inc rain sensors)
Washers (screen and lights)
Heated rear window
Homelink

REAR CU
Alarm siren and horn
Spoiler
All rear lights
Rear luggage compartment lights
(Boxster convertible top)

AIR CONDITIONING CU
Compressor
Air flaps
Blower motor

ALARM CU
Door locks
Ignition lock

GATEWAY
No outputs - signal/control/monitoring only

AIRBAG POSIP CU
All airbags
Seat belt pre-tensioners

SEAT MEMORY CU
Seat motors

PSM CU
Control valves
Pump

PASM CU
Shock absorbers

TPMS RDK CU
No outputs - signal/monitoring only

DME CU
Engine control outputs

TIPTRONIC/PDK CU
Gear control

AWS CU (Auto weighing system)
No outputs - signal/monitoring only

PCM, NAVIGATION, PHONE CU
Self explanatory, controlled through MOST loop

PARK ASSISTANT CU
No outputs - signal/monitoring only

CORNERING LIGHTS CU
Dynamic cornering lights (left/right control)


_____________________________

Richard
2012 Cayman 2.9 PDK in Meteor Grey/Black & 1989 3.2 Carrera Sport in Guards Red/Linen
Previous:
2006 Cayman S, 2000 996 Turbo, 1998 996 C2, 1994 993 C2
post edited by Buddy - 2015/02/01 18:40:07

6 Replies Related Threads

    Guest
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    Re: Control Modules Gen 1 Cayman S 2017/01/21 16:35:59 (permalink)
    Hi my 2004 UK Cayman S is giving fault code C123 "Communication passenger's door control unil (comfort)". The left door will not unlock, or open and the window and mirror will not function.  Also the center dash button to lock and unlock the doors will not work. The right (drivers) door does lock from the key button, and everything else seems to function fine. 

    Do you have any ideas what the fault could be? 
    Thanks
    kev_hughes
    Motorhead
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    Re: Control Modules Gen 1 Cayman S 2017/01/21 19:35:42 (permalink)
    Hi Kev,
     
    Have you tried clearing the fault?
     
    If all the fuses are OK then I would suspect that the first place to look is the alarm control unit, but I don't know where it's located - most probably on the front bulkhead, under the (passenger?) seat or in the centre console? Best to ask either at a Porsche Centre or a reputable Indy.
     
    You may need a Porsche-specific diagnostic analyser to track down the problem which will also be required to reprogram the module, if that is indeed the source of your problem.
     
    Jeff
    post edited by Motorhead - 2017/01/21 20:03:30

    987.2 Cayman S
    North Bedfordshire
    PCGB R10 and R24
    wirralmonkey
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    wirralmonkey Guest of the Club
    Re: Control Modules Gen 1 Cayman S 2017/01/22 17:32:37 (permalink)
    Thanks Jeff, 
    Thanks for the reply. 
    The diagnostics tool I have is icarsoft  POR-II, which is porsche specific, it will not program thought. 
    I've tried clearing the fault, but it fails to communicate with door control unit, so wont let me. 

    I suspect the Alarm module from reading your first post. I just find it hard to understand why it would "loose" the left door for no reason, yet the alarm still function and open the right door. 
    I'm guessing its a trip to the Porsche dealer then. 
    Thanks again. 

    Kev
    Motorhead
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    Motorhead PCGB Member
    Re: Control Modules Gen 1 Cayman S 2017/01/22 19:31:42 (permalink)
    Yes Kev, the iCarsoft is a very useful diagnostic tool but I believe that it has limited functionality for resetting faults.
     
    Electrical gremlins on modern cars using complex CAN bus systems with interconnected electronic modules are very difficult to diagnose without the correct equipment. I think that it will be more efficient for you to bite the bullet and take it either to a Porsche dealership or, if you can find a local one, a reputable Porsche Indy; otherwise you're going to be into swapping components randomly.
     
    A genuine Porsche alarm control unit for your car will be about £340 plus fitting and diagnostic time. I've a feeling that it's located under the passenger seat.
     
    Hope that you get it sorted.
     
    Jeff

    987.2 Cayman S
    North Bedfordshire
    PCGB R10 and R24
    Buddy
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    Re: Control Modules Gen 1 Cayman S 2017/01/24 23:32:17 (permalink)
    Kev, there are a few independents in the Wirral/Liverpool/Cheshire area who should be able to help, let us know how you get on.
     

    Kevan
    Cayman Register Secretary
    Cayman S Gen2 PDK Amethyst Metallic
    Location South Derbyshire
    PCGB R8
    Guest
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    Re: Control Modules Gen 1 Cayman S 2017/01/25 08:27:48 (permalink)
    Ok thanks guys. 
    I'll get it booked in and hopefully sorted in the next couple of weeks and let you all know what's what. 
    I have a Cayenne S too, so it's not a total disaster that it's it a 1door  car temporarily :-) 
     
    There is a local Indy called OCD Porsche that I have used before, I'll try him. 
     
    Kev
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