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Terminology according toSAE J1930

Terminology according to SAE J1930


Partly new terminology which affects all emission-related components, signals and functions is introduced starting from model year 1994. This new terminology conforms to the Society of Automotive Engineers Recommended Practice SAE J1930.

The use of SAE J1930 terminology for emission-related systems and components is required by the California Air Resources Board (CARB) for new service manuals beginning with the 1993 model year.

The U.S. Environmental Protection Agency has also proposed regulations requiring the use of J1930 terminology beginning with 1994 car models.

While this change in terminology may be troublesome in the beginning for technicians accustomed to Saab component and system names, standardization within the automotive industry will in time reduce the confusion that can result from different terms for the same component and the risk of misinterpretation.

For example, the Saab term "AIC valve" is termed by other manufacturers as "Electronic Air Control Valve solenoid", Auxiliary Air Control valve", "Idle Stabilizer valve" and "Air Control Valve".

Beginning with the 1994 model year, we shall be using instead the J1930 term IAC valve (Idle Air Control), which is the same term other automotive manufacturers around the world will use.


The SAE J1930 terms were not selected on the basis of what component names were the ones commonly used by most auto manufacturers. Instead the SAE used a logical method for describing components in which modifiers are added to a base word in order of decreasing significance.

To use the example above: " Idle Air Control Valve ":


• The basic concept is Valve .

• Control indicates that the valve has a controlling function.

• Air tells us that the valve controls air (airflow).

• Idle , finally, tells us what sort of air the valve controls, i.e. idling air.

In order to ease the transition to the new terminology, there is a listing on the next page comparing previous Saab component and system terms with the equivalent SAE J1930 terms. Some of the terms included in this listing may not be used in this particular manual, but it is likely that you will encounter them later. As SAE J1930 is a market requirement in the USA, changes in terminology will affect other markets to a lesser extent. We nevertheless consider it important that you should be aware of these changes, wherever you are in the world. You can check the following listing if and when you come across a term that appears unfamiliar.


The listing is intended to show differences between the new J1930 terminology and terms used previously. Terms which are also used in the comparison, which means that J1930 can be expected to have a direct impact on terminology regardless of language.

Term according to SAE J1930

Previous English term

Swedish term

Boost Pressure Control Valve BPC Valve

APC Solenoid

Boost pressure control valve, Solenoid valve

Charge Air Bypass Valve CAB Valve

Turbo Bypass Valve

Charge air bypass valve

Charge Air Cooler CAC

Intercooler

Charge air cooler

Clutch Control Module CCM

Sensonic ECU

Clutch control module

Contious Fuel Injection CFI

C. I.

Continuous fuel injection

Crankshaft Position Sensor CKP Sensor

Crank Sensor

Crankshaft position sensor/ crankshaft sensor

Data Link Connector DLC

ISAT Test Socket

Data link connector, ISAT

Diagnostic Trouble Code DTC

Fault Code

Diagnostic trouble code

Engine Control Module ECM

Engine Management ECU

Engine control module

Engine Coolant Temperature Sensor ECT Sensor

Coolant temperature sensor

Engine coolant temperature sensor

Evaporative Emission Canister Purge Valve EVAP Canister Purge Valve

ELCD Valve

Evaporative emission canister purge valve

Evaporative Emission Canister EVAP Canister

Charcoal Canister

Evaporative emission canister

Fuel Pressure Regulator FPR Regulator

Pressure Regulator

Fuel pressure regulator

Heated Oxygen Sensor HO2S

Heated O 2 Sensor

Heated oxygen sensor

Idle Air Control Valve IAC Valve

AIC Valve

Idle air control valve

Intake Air Heat Plate IAH Plate

Heat plate

Intake air heat plate

Intake Air Temperature Sensor IAT Sensor

Intake Temperature Sensor

Intake air temperature sensor

Ignition Discharge Module IDM

DI Cassette

Ignition discharge module

Idle Speed Control ISC

Idle control

Idle speed control

Manifold Absolute Pressure Sensor MAP Sensor

Pressure sensor

Manifold absolute pressure sensor

Multiport Fuel Injection MFI

Multiport Fuel Injection

Multiport fuel injection

Malfunction Indicator Lamp MIL

Check Engine Lamp

Malfunction indicator lamp

On-Board Diagnostics OBD

Self diagnostics

On-board diagnostics

Oxygen Sensor O2S

Unheated O 2 Sensor

Oxygen sensor

Sequential Multiport Fuel Injection SFI

Sequential Fuel Injection

Sequential multiport fuel injection

Scan Tool Scan Tool

ISAT

ISAT

Transmission Control Module TCM

Transmission ECU

Transmission control module

Throttle Position Sensor TP Sensor

Throttle potentiometer

Throttle position sensor

Wastegate W

Wastegate

Wastegate/ boost pressure regulator

Wide Open Throttle WOT

Full Throttle

Wide open throttle