Ever wonder what the data on your scan tool should be? Maybe mass air flow data or VANOS? Even idle control data is sometimes displayed in a format not easily deciphered.
This technical article defines BMW scan tool data stream desired DME data, as set by BMW. BMW calls this data set point data. This refers to the idea that these sensors (inputs) and controls (outputs) should be within this range when normal. Outside of these ranges can be considered faulty and furhter diagnosis to reach the root cause is needed.
Engine m52 SW MS42---- example from 2000 528
Diagnostic Tool for BMW and MINI. What cars does it work on? 1-Series 2004-2013 3-Series 1996-2013 5-Series 1996-2013 6-Series 2004-2013 7-Series 1994-2013. DME MSD85 ISN by Autohex II BMW Scan Tool. Autohex BMW Diagnostic Tool is considered as the most powerful tool for managing ISN ( Individual Serial Number ) in CAS, DME and EGS. Full support to read and write ISN to all CAS versions (1,2,3 3+,4,4+) including latest updates. Supports all ISN reading of DME/DDE in E series up to latest produced.
Additive -0.35ms to 0.35ms
Multiplicative -7% to 11%
Idle speed regulation -7.5% to 7.5%
Engine M54 SW MS43 2001 525
Idle adaption -7.5 to 7.5%
O2 controller 0.8 to 1.2
Air mass 8 to 15 kgph
Injector duration 1.83.4 ms
Smooth running
- <2.5 ok
- 2.5 to 7.0 critical
- >7.5 not ok
Lambda idle additive -3.5 to 3.5ms
Part load multiplicative -7 to 11%
Engine M54 offrd 2004 x3 2.5
Air mass 8 to 15 kgh
Inject duration 1.8 to 3.4 ms
Load 80 to 140 mg/stroke
Engine M54 ms43 2002 330i
Idle air adaptation -7.5 to 7.5%
Air mass 9 to 16 kgh
Injector duration 1.8 to 3.4ms
Additive fuel trim -0.35 to 0.35 ms
Multiplicative fuel trim -7 to 11%
Engine M53 ms43 2003 325xit
Idle adaptation -7.5 to 7.5%
Air mass 8 to 15 kg/h
Injector duration 1.8 to 3.4ms
Load signal 80 to 140mg/stroke
Idle actuator opening 23 to 39%
Intake cam 110° to 115°
Exhaust cam -107.5° to -102.5°
Additive -0.35 to 0.35ms
Multiplicative -7 to 11%
Idle adaptation deviation 0 to 0.25
Part load adaptation deviation 0 to 0.25
Pwg1 0.58 to 0.81v
Pwg2 0.17 to 0.49v
Dk pot1 0.29 to .81v
Dk pot 2 4.15 to 4.75V
Engine M54 2003 525i tu
Smooth running same as previous
Rpm 680 to 800
Idle air adaptation -7.5 to 7.5%
Air mass 8 to 15 kg/h
Injector duration 1.8 to 3.4ms
Idle actuator opening 23 to 39%
Intake cam 100° to 115°
Exhaust cam -107.5° to -102.5°
Additive -0.35 to 0.35ms
Multiplicative -7 to 11%
Idle adaptation deviation 0 to 0.25
Part load adaptation deviation 0 to 6
Pwg1 0.58 to 0.81v
Pwg2 0.17 to 0.49v
Dk pot 1 0.29 to 0.81v
Dk pot 2 5.15 to 4.75v
Engine M54 ms45 2003 Z4
Smooth running see previous
Rpm 680 to 800
Air mass 8 to 15kg/h
Injector duration 1.8 to 3.4
Load 80 to 140mg/stroke
Adaptation idle speed -7.5 to 7.5%
Additive -0.35 to .35ms
Multiplicative -7 to 11%
Intake cam 110° to 130°
Exhaust cam -114° to -96°
Pwg1 0.58 to 0.81v
Pwg2 0.17 to 0.49v
Dk pot 1 0.29 to 0.81v
Dk pot 2 4.15 to 4.75v
Engine M52 ms42 2000 528 engines greater than 2.0 liter
Smooth running same as above
Engine rpm 680-800
Ignition angle -3° to 3°
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Idle air adaptation -7.5% to 7.5%
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Air mass 8 to 16 kg/h
Injector duration 1.8 to 3.4ms
Load 80 to 140 mg/stroke
Idle actuator opening 23 to 39%
Intake cam 110° to 115°
Exhaust cam -107.5° to -102.5°
Additive -0.35 to 0.35ms
Multiplicative -7 to 11%
Idle adaptation deviation 0 to 0.25
Part load adaptation deviation 0-6
Potentiometer cable pulleys
- Pulley1 13 to 27*
- Pulley2 13 to 27*
Mdk1 10° to 32°
Mdk2 10° to 32°
M52 2.0l ms42 euro engine
RPM 680 to 800
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Ignition angle 0° to 8°
Idle air adaptation -7.5 to 7.5
Air mass 7 to 13 kg/h
Injector duration 1.5 to 3ms
Load signal 60 to 140 mg/stroke
Idle actuator opening 23 to 39%
Intake cam 110° to 115°
Exhaust cam -107.5° to 102.5°
Additive -0.35 to 0.35ms
Multiplicative -7 to 11%
Idle adaptation deviation 0 to 0.25
Part load adaptation deviation 0 to 6
Potentiometer cable pulleys
- Pulley1 13° to 27°
- Pulley2 13° to 27°
Mdk1 10° to 32°
Mdk2 10° to 32°
Engine S62 MSS52 2002 M5
Additive -0.25ms to 0.25ms
Multiplicative -15% to 15%
O2 control factor Min .85 Max 1.15
Engine M62 lev me7.2 2000 540
Additive -0.3 to 0.3 ms
Multiplicative -20 to 20%
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BMW's factory tool is the PC based Online Service System (O.S.S.). O.S.S. includes a number of components and provides extensive service functionalities. Integrated into BMW's O.S.S. are software modules for both diagnostic work (aka: ISTA-D) and for module reprogramming (aka: ISTA-P).
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BMW’s can present a special challenge for many shops. On one hand, because of the higher complexity of these vehicles, there are often lots of repair opportunities. However, on the other hand it is often difficult to almost impossible to obtain advanced diagnostic repair procedures when one has a BMW to diagnosis!
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The BMW OSS tool alleviates this situation by providing the user with not only all needed scan functions, but it also has all needed repair procedures!
ISTA-D, once properly installed, provides the technician with the ability to do full diagnostic functions; read codes/clear codes, display all data PIDs, activate bi-directional functions and perform BMW's 'Automated Tests'. Additionally, this OEM system provides real time on-line access to the full BMW Service Information (SI) database. SI database information includes such items as BMW's Code Descriptions (Both SAE and BMW specific), Repair Procedures, Wiring Diagrams, Pin Assignments, Connector Views and Installation locations.
The ISTA-P software module provides the technician with the ability to program or re-flash all modules. Whether the technician is replacing a defective module or simply wishing to update an existing working module, ISTA-P enables this to be performed. As an added note, BMW TSB's are also integrated into this OEM scan tool package.
A BMW 'OEM' package can be ordered in two different configurations. The first configuration, which BMW recommends, includes all the BMW OEM interface cables (A+B+C) and the BMW ICOM-2 interface device. This package provides vehicle coverage from the late 80's right up to the current model year and it covers all BMW models/chassis'. A second package, which utilizes a less expensive J-2534 Pass Through Tool (PTT) interface device is also available. This lower priced PTT package does not provide full model year coverage and is limited in how far back the coverage goes. Additionally, using the PTT interface can result in longer reprogramming times. (In some cases up to 1.5 hours longer.)
It should be noted that in typical German engineering fashion, the specifications for the PC platform and various operating system environments are very specific to ensure the BMW O.S.S. system will operate properly. PC processor clock speed, monitor resolution, HDD space and network connections must all be correct. Additionally, Operating System and Runtime Environments (Windows O/S, JAVA, Internet Explorer, Net Framework) must be as specified. At OEMTools, we offer a number of complete BMW 'TurnKey Packages' that can include either a properly configured Dell or Panasonic laptop along with either the BMW recommended interface or a BMW recognized PTT interface.
For assistance with additional questions, pricing or to order a BMW OEM package, Call or e-mail us today!
Alternatively, BMW Service can be also performed with the Autoland iScan-3 tool.
Besides covering all the major Euro lines including Mercedes Benz, BWM, Porsche and VW-Audi, the ‘iScan3’ also provides excellent coverage for virtually all Asian car lines. You will also find this tool has extensive domestic coverages and some common medium duty truck lines.
One special mention on BMW: This is one of only a very few aftermarket tools that allows the shop to re-program a number of BMW controllers!
With a color screen, dual processors and well written programming, this tool is very fast in its navigation of a vehicle.
For assistance with additional questions, pricing or to order an Autoland iScan-3 tool, Call or e-mail us today!
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