Actron Comprehensive Guide to Commanded Equivalence Ratio (cmd eq, cmd eq rat) and Fuel System Metrics
Page 10

CALC LOAD (0 - 100%)

Calulated LOAD Value indicates load on engine.

CAT TEMPxy (-40°C - 6513.5°C) or (-40 - 9999.9F)

Catalyst Temperature Bank shall display catalyst substrate temperature for bank catalyst, if used by control module strategy for on board diagnostics monitoring, bank, sensor catalyst or tempera- ture sensor.

CLR DST (0km-65,535km) or (0- 40,722miles)

Distance Since Cleared Diagnostic Codes is distance since diagnostic trouble codes were erased.

CLR TIM (0 - 65535 min or 1092.25 hours)

Time Since Cleared Diagnostic Code is time since diagnostic trouble codes were erased.

CMD EQ RATxy (0 - 1.99)

Commanded Equivalence Ratio is the ratio of the air/fuel mixture.

NOTE: The CMD EQ RAT will read 1.0 while in a closed loop of fuel

COOLANT (-40 - 215°C)or(°F)

Engine Coolant Temperature displays engine coolant temperaturefrom engine coolant temperature or cylinder head temperature sensor.

NOTE: The coolant on many diesels may use Engine Oil Temperature instead.

EGR CMD (0 - 100%)

Commanded Exhaust Gas Recirculation is the percentage of exhaust gas being recirculated.

EGR ERR (-100 - 99.22%)

Exhaust Gas Recirculation Error will show the error from changing from one condition to another.

ENG RUN (0 - 65,535sec.)

Time since Engine Strart is the time the engine is running.

NOTE: ENG RUN stops when engine stalls or engine is turned off for any reason.

ENGINE (0 - 16383.75 RPM)

Engine Revolutions Per Minute is the speed engine is running.

EQ RATxy

O2 Sensor Equivalence Ratio is Bank x Sensor

EVAP REQ (0-100%)

Commanded Evaporative Purge is the positon evaporative purge control valve is open in percentage.

EVAP VP (-8192PA - 8191PA) OR (-32.8878 - 32.8838 H20)

Evaporative Emissions System Vapor Pressure is pressure in the fuel tank

FUEL LVL (0 - 100%)

Fuel Level Input is the percentage of fuel with 0% equaling tank is full and 100% when tank is empty.

FUEL PRES (0 - 765kPa) or (0 - 110psi)

Fuel Rail Pressure is the fuel pressure at the engine when reading in reference to atmosphere pressure.

FUEL SYS (OPEN or CLSD)

Fuel System Status show loop status of fuel system banks. States the fuel system can be running in:

1.OPEN: Module is operating in Open Loop control strategy. The vehicle has not yet satisfied conditions for Module to go to closed loop.

2.CLSD:PCM currently functioning in Closed loop control strategy, using O2 sensor(s) as feedback for fuel control

3.OPEN1:Open Loop control strategy is being used by the PCM due to driving conditions. Driving conditions that may cause this to happen are power enrichment and deceleration enrichment.

10

Page 9 Page 11
Image 10
Page 9 Page 11
Contents 9040 Global OBD II Code Scanner Safety Precautions About OBDOBD II Diagnostic Link Connector DLC Diagnostic Trouble Codes DTCWhat the Code Scanner Does Code Scanner Functions Control and IndicatorsOperating the Code Scanner Read CodesMIL Status Erase CodesMonitors Code Lookup Troubleshooting TipsView Freeze Data Perform a Visual InspectionCode Scanner Does Not Power Up Scan Tool does not Power upVehicle Service Information Data Parameter List Format Types of Data ParametersFuel Pres 0 765kPa or 0 110psi LT FL Ftrm -100 99.22% IAT Temp -40 215C or -40 419FIGN ADV -64 MAF 0 655.35 g/s or 0 86.5lb/minTHR POS 0 100% ST FLTRMx -100 99.2%Trips SNC CLR 0

9040 specifications

The Actron 9040 is a highly regarded automotive diagnostic tool designed to provide users with an efficient and reliable means of troubleshooting vehicle problems. Its user-friendly interface makes it suitable for both novice users and experienced technicians, enabling it to effectively cater to a diverse demographic of automobile enthusiasts.

One of the main features of the Actron 9040 is its compatibility with a wide range of vehicles. Supporting both OBDI and OBDII protocols, this scanner can work with vehicles from 1996 onward, making it an invaluable tool for diagnosing issues across many makes and models. Its broad compatibility ensures that users can take full advantage of its diagnostic capabilities.

The device boasts a large, easy-to-read LCD screen that displays diagnostic codes and live data in real time. This functionality allows users to visualize how various sensors and systems are performing while the vehicle is in operation. Additionally, the Actron 9040 reads and clears diagnostic trouble codes (DTCs), which can help to quickly identify issues and reset the “Check Engine” light after repairs have been made.

Advanced features of the Actron 9040 include onboard monitoring of various vehicle systems, such as the engine, transmission, and emissions system. This helps users to pinpoint specific problems and assess the overall health of the vehicle. The tool also includes a built-in code library, providing users with detailed definitions of trouble codes, making the troubleshooting process more intuitive.

The Actron 9040 utilizes easy-to-understand menus and prompts, streamlining the diagnostic process. The device is powered through the vehicle's OBDII port, eliminating the need for batteries or external power sources. This design enhances portability and ensures that users can perform diagnostic checks even in remote locations.

In conclusion, the Actron 9040 combines advanced diagnostic technologies with user-friendly features to create an essential tool for anyone involved in vehicle maintenance. Its multi-vehicle compatibility, real-time data monitoring, and in-depth diagnostic capabilities make it an exceptional choice for both DIY enthusiasts and professional mechanics alike. With the growing complexity of automotive systems, tools like the Actron 9040 are crucial for effective vehicle maintenance and repair.
Top Page Image Contents