Menu toggle

Anyone with a Turbo & a Multimeter?

edh

edh

New member
I'm after a quick favour - I'd like to check that a reading I get on my AFM harness is correct. I've had some MAF (Vitesse MAF) problems & want to be sure that this isn't the cause.

There is a 5 pin connector going to the AFM - on mine I get a strange reading on the green/red wire. This is pin 4 of 5 (counting the empty pin as pin 1)

With the ignition on, I get a small initial voltage on that line which then drops to zero. The longer the ignition is on before I test, the higher the voltage is - I saw up to 0.1V

I guess this might be the same for all 944's, not just the Turbos as they all use similar AFM/ DME setups

Thanks

Ed
 
Pretty sure that wire is the analogue o/p from the AFM giving flap position. At idle when warm mine is approx 500mV.

Rich
 
Rich - It is the signal wire - what I'm seeing is a transient voltage on the wire to the ECU without having the MAF (or AFM) plugged in, engine off, ignition on.

I want to be confident that this is normal before I plug the MAF back into the harness.
 
Yes - he doesn't work weekends though ;)

this is possibly a non-vitesse issue & might be a wiring fault - wanted to try & confirm that.
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Archant Dialogue
Back
Top