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Some issues, HELP! Loren?

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Durametric shows 5821 Version Coding when reading the faults from ABS/PSM. Instrument panel says " ABS failure" and PSM failure". Any idea about this, like could it be just a matter of PIWIS / PST-2 re-coding?

Then the "Generator failure" is also on all the time. That doesn't really surprise me, because generator's DFM-pin is not connected to Motronic's C19-pin. What surprises me is that there's no such wire in the engine's wiring loom...and X59/2-8 pin is missing. Anyone?

Is Motronic-to-radiator cooling fan -control grounding or not? IMO Motronic grounds controlling relays, but the blowers doesn't start at all.

Oh yes, this is a M96.70 to C2 chassis conversion. It runs, but those issues appeared. And I haven't yet driven it at all, it's still on jackstands. ( ABS, PSM & sensors... )

Edited by pete95zhn
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'00, originally with PSM & ABS 5.7.

That generator wiring issue seems to be a '01 peculiarity, I did not find it from '02 or '05 turbo wiring diagram. The engine should be from '01 chassis, at least according to the chassis number I got from the seller. The Motronic box is also ´01.

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A '00 ( xxxZYSxxx ) C2. Quote from the Workshop Manual:

PSM component arrangement

PSM (Porsche Stability Management) is installed as

standard in the 911 Carrera 4 (996) and 911 Carrera 4S

(996). PSM variants: production launch with PSM 5.3

and as of model year 2000 (Y-range) PSM 5.7.

The 911 Carrera (996) is equipped with PSM 5.7 as of

model year 2000 (Y-range) on special request.

The lateral acceleration sensor is integrated in the

rate-of-turn sensor as of PSM 5.7 (as of model year 2000)

(rate-of-turn sensor installation position: PSM 5.7 in front

of the centre console / PSM 5.3 underneath the seat on

the right).

As of PSM 5.7 the components: control unit, return pump

relay, and solenoid valve relay are located in the hydraulic


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  • 5 weeks later...

Previous issues are more or less solved, but some new ones are emerged. Rough idle would be the worst of them.


-no faults from Durametric, no warnings at instrument panel

-rough idle, below 800 rpm

-Durametric's actual values show:

*no misfires

*rough running values cylinders 2-3 & 5-6 around 6, 1 & 4 around -10.

*lambda before CAT 1 about 1.0, before CAT 2 about 1.1 - 1.2. RH CAT starts to glow after a couple of minutes of stationary idling...

*if injectors 2, 3. 5. or 6 are shut down from Drive links, idle actually gets better...rpm rises and stabilizes.

*if injectors 1 or 4 are shut down, the engine stalls.

Whiskey Tango Foxtrot?? Is there a hardware or software problem? How can I check if all injectors are really working, I have my doubts about one from bank 2...

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