Volvo Term Glossary

nascenta · Post by **nascenta** » 23 Dec 2014, 08:56

I have found this glossary very useful. Thanks for creating it. Three terms to add though, FPM (fuel pump module), FPCM (fuel pump control module) and PEM (pump electronic module). Apparently, is the same thing but given a different name depending on the model.

Post by **matthew1** » 23 Dec 2014, 13:08

PTC Positive Temperature Coefficient (heater nipple)

FPM (fuel pump module)

FPCM (fuel pump control module)

PEM (pump electronic module)

... added.

Thanks nascenta and philopus.

Post by **Ben850** » 12 Apr 2015, 05:05

VVIS - Volvo Variable Induction System.
This applies to the '93 - '94.5 850 intake manifold with a vacuum actuated vane to switch between a long or short runner within the manifold at a set RPM for torque, and/or fuel savings.

Side note: They function better when the actuation order is reversed with a device that fools the electronic vacuum solenoid as to RPM.

nascenta · Post by **nascenta** » 27 Apr 2015, 12:03

CPS also stands for clutch position sensor.

Post by **matthew1** » 28 Apr 2015, 12:53

Updated. Thanks guys.

Post by **abscate** » 29 Mar 2022, 06:16

STC -Stability and Traction Control. In 1999, with engine torque management handled in software ( Bosch ME7) the earlier TRACS system was upgraded to include AbS control of all four wheels, and torque management for enhanced stability and traction.

SWMBO- S/he Who Must Be Obeyed… usually aimed at married guys

Post by **BlackBart** » 29 Mar 2022, 14:29

I need this glossary badly, just to keep up with the MVS thread banter!

So... clarify please -
I've always said "ECU," in newer Volvos it's a CEM, but....

I take it the ECU still controls specifically engine management, and the CEM is the overall computer managing all the other systems?? Is that accurate?

Post by **abscate** » 30 Mar 2022, 04:53

P80s have ECU or ECM but no CEM. Sometimes the main fuse box is called the CEM but it doesn’t have processors like the P2. Potato, potaato.

P2s have both ECU and ECM for engine management and a CEM Which manages most/ all the other modules

Post by **matthew1** » 30 Mar 2022, 11:36

abscate wrote: ↑29 Mar 2022, 06:16 STC -Stability and Traction Control. In 1999, with engine torque management handled in software ( Bosch ME7) the earlier TRACS system was upgraded to include AbS control of all four wheels, and torque management for enhanced stability and traction.

SWMBO- S/he Who Must Be Obeyed… usually aimed at married guys

Added. Thanks Abscate.

Post by **BlackBart** » 30 Mar 2022, 13:42

abscate wrote: ↑30 Mar 2022, 04:53P2s have both ECU and ECM for engine management...

Both...!?

Volvo Term Glossary

Re: Volvo Term Glossary