[Main 95 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos Re: mass air flow code p0100 no signal (Not P0300 :) ) Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by Nathan [Email] (#2249) [Profile/Gallery] (more from Nathan) on Thu, 7 Jul 2005 19:06:27 In Reply to: mass air flow code p.0300 no signal, joe [Profile/Gallery] , Thu, 7 Jul 2005 17:37:06 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

I wish I could post the schem. pic, but I don't currently have any hosting ability.... If you post your email, I'll send you the images.

From WIS:
P0100

Mass Air Flow Circuit. No Signal.
Fault symptoms

• CHECK ENGINE goes on after two driving cycles.

• Engine speed drops slower than normal when accelerator pedal is released.

• Misfiring can occur before trouble code is generated.


On-Board Diagnostics
Type of diagnosis:


- Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.


Enable criteria:


- Crankshaft rotating. Main relay voltage above 10V.


Fault criteria:


- No frequency for more than 0.5 s.


Dependents:


- None.


System reaction to a fault:


- Fuel adaptation reset. Intake pressure and intake air temperature used as substitute values.


OK report:


- 60 s has past since start. Fault criteria for P0100, P0102 or P0103 not fulfilled.

- Conditions for multiplicative fuel adaptation fulfilled. Mass air flow sensor value corresponds with both the air mass flow calculated from intake manifold pressure and the air mass flow calculated from throttle position.


Fault handling: (See section Fault handling III, other emission-related components and functions for more information.)


- Type III.


Diagnostic help
Fault diagnosis concerns an electrical fault in connecting leads or in the sensor.

Functions in the diagnostic tool related to the fault are:


• Diagnostic status for the diagnosis.

• Mass air flow sensor value, unit g/s.

• Air mass deviation from calculated, unit %.


Checking the wiring
Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short circuits. Observe the multimeter, diagnostic tool or test lamp during the check.

posted by 24.141.51...

• mass air flow code p.0300 no signal, joe , Thu, 7 Jul 2005 17:37:06
  • Re: mass air flow code p0100 no signal (Not P0300 :) ), Nathan , Thu, 7 Jul 2005 19:06:27 <-- Viewing This Message
    • Re: mass air flow code p0100 no signal (Not P0300 :) ), joe jhtrimarchi@hotmail, Thu, 7 Jul 2005 20:09:43
    • WIS question, Dean, Thu, 7 Jul 2005 20:03:49
      • Two more ways., dmz789b, Thu, 7 Jul 2005 21:27:19
        • you sent the TB diag! need the mass air diagr, joe , Fri, 8 Jul 2005 18:12:18
          • Re: you sent the TB diag! need the mass air diagr, dmz789b, Fri, 8 Jul 2005 18:35:12
            • thank you!!, joe , Mon, 11 Jul 2005 20:43:39
      • Re: WIS question, Nathan , Thu, 7 Jul 2005 20:18:20

No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.

• Prev by Date: Re: Left Front Drivetrain Noise, Frank, Thu, 7 Jul 2005 19:04:34
• Next by Date: Cruising RPMs at highway speeds, Juan P., Thu, 7 Jul 2005 19:39:57
• Main 9⁵ Bulletin Board

StateOfNine.com

SaabClub.com

Jak Stoll Performance

M Car Covers

Ad Available

The content on this site may not be republished without permission. Copyright © 1988-2024 - The Saab Network - saabnet.com.
For usage guidelines, see the Mission & Privacy Notice.
[Contact | Site Map | Saabnet.com on Facebook | Saabnet.com on Twitter | Shop Amazon via TSN | Site Donations]

Random Saabnet.com Member Gallery Photos (Click Image)