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PCM 2 Doh! - Page 1 - 911/Carrera GT - PistonHeads UK

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Original source

3 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHPCM 2 Doh! - Page 1 - 911/Carrera GT - PistonHeads UK

Reported or suspected cause

signal

Reported cause

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that report identifying a cause: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Reported cause · Original poster
This track turned out to be the signal from the centre push on the RHS PCM select button.
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PCM 2 Doh! - Page 1 - 911/Carrera GT - PistonHeads UK

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Leading evidence: 'signal' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'signal' (1 discussions; 1 report identifying it and 0 suggest it). No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 3 captured posts examined · 1 partial discussions

Reported and suspected causes (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

signal

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that report identifying a cause: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Reported cause · Original poster
This track turned out to be the signal from the centre push on the RHS PCM select button.
Original post Read captured discussion
PCM 2 Doh! - Page 1 - 911/Carrera GT - PistonHeads UK

Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

3 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

PistonHeads: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

2 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link
I had the same problem - not fixed it for various reasons but I reckon the ribbon cable connecting the screen to the main PCB got crimped...
Original post Read captured discussion
No unique explicit quoted action; no causal link assigned

Generation: 20261027T053112Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Anyone ever had any problems with the Right Hand Side rotary push button on their PCM 2 unit (03 996 Turbo)? I have just taken my unit apart (very carefully) to fix a broken SIM card tray, which now works beautifully (thanks to some great advice from this forum). Unfortunately the centre push on the RHS rotary push button (mode selector) does now not work.. doh! I was really careful about separating all the ribbon cables and connectors inside the unit when I had it apart, still looks like I wasn't careful enough...Grrr. Have subsequently taken it apart twice more to re-seat the connectors with no luck.. Anyone got any ideas or know of any PCM specialists in the Guildford area? Thanks..8-/

POST 2Original post

Did you get any joy with this ? I had the same problem - not fixed it for various reasons but I reckon the ribbon cable connecting the screen to the main PCB got crimped...

POST 3 / ORIGINAL POSTEROriginal post

Dave, yeah did get it fixed. I once again took the unit out of the dash and broke it down and found that as I had previously levered out the PCB from the casing (with a small screwdriver) I had inadvertently nicked the very edge of the PCB and broken a track running down the very edge of the board. This track turned out to be the signal from the centre push on the RHS PCM select button. To fix it I simply soldered a very small wire ( very carefully) across the broken track. It took ages to find as I was convinced that it must have been a ribbon cable problem. I still can't believe that I was clumsy enough to chip the PCB! Hope this helps. C.

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