Contents Wiring diagrams Section: Testing & Diagnostics All sections

Modic Iii - Overview - All Models: Other BMW 5 series E39 facelift

Testing & Diagnostics 19 illustrations ~1244 words

MoDiC Features

The MoDiC tester has the following features

Scheme 551

Scheme 551: MoDiC Features

Scheme 552

Scheme 552

MoDiC Control Panel

The control panel below the touch screen contains the On/Off switch, the suspend mode switch and various function LEDs.

Scheme 553

Scheme 553: MoDiC Control Panel

The following chart shows the LED indications for the various operating situations

LED DisplayINDICATION
Both power LEDs -yellowMoDiC is being supplied with power from external source, MoDiC is docked on the charging station, and MoDiC is receiving power from vehicle's battery - cigarette lighter adapter
One power LED - greenMoDiC is being powered from main battery
One or both power LEDs are flashing yellowMoDiC is being powered from an external source Battery is being charged
One or both power LEDs - greenBattery capacity is sufficient to operate the MoDiC
One or both battery LEDs- flashBattery needs to be exchanged or recharged
Main battery LED is offMain battery is disconnected or defective
Buffer battery LED is offBuffer battery has a fault
All LEDs are offMoDiC is switched off
Temperature LED flashesAmbient temperature is out of working range of MoDiC
Temperature LED is offAmbient temperature is within working range of MoDiC
Error LED flashesTemperature or battery fault is present
Error LED on steadyMoDiC has a system fault
Error LED is offNo system faults are present

OPERATION SITUATION

CHARGER/DOCKING STATION

The charger/docking station has several functions for MoDiC operation

  1. MoDiC software loading
  2. Charging the MoDiC batteries
  3. Printer connection link for the MoDiC while docked in the charging station.

The charger/docking contains the following features

Scheme 554

Scheme 554

The floppy and CD ROM drives are used to update the MoDiC software and to down load programs. The MoDiC can only gain access to the drives when it is docked on the station.

Battery Charging

The two battery compartments on the docking station are for charging spare batteries.

The status LED on the side of the docking station indicate the state of charge of the batteries being charged.

The batteries in the MoDiC will also be charged while it is docked on the station.

Scheme 555

Scheme 555: Battery Charging

The status LED indicators provide the following information

Scheme 556

Scheme 556

Printer Interface

The Docking Station printer interface connections are located on the underside of the unit.

These parallel printer connectors are for connecting the MoDiC docking station to the DIS printer.

A locally purchased Male/Male 25 pin parallel printer cable will be required. Connect as shown.

Scheme 557

Scheme 557: Printer Interface

Scheme 558

Scheme 558: Diagnostic Head

The diagnostic head is the link between the vehicle's electronic systems and the MoDiC tester.

The head is a self-contained computer that receives its power from the diagnostic socket when the head is plugged in.

The diagnostic head has 3 MB of data storage and a PCMCIA card for storing and transmitting data to the MoDiC.

The size of the diagnostic head has been kept small so that it can fit under the hood when it is closed. Future plans call for the head to be used as a flight recorder that can be attached to the vehicle and record data on a suspect system while the vehicle is being driven

Data from the diagnostic head can be transmitted to the MoDiC either by Radio Frequency (RF) or by a hard wire cable link. The RF transmitting range is approximately 950 feet and the hardwire cable is 25 feet long.

The diagnostic head has four connectors

  1. Bottom edge: Two single connectors (red/black) used for signal recording for future usage and one multi-pin connector for the 20 pin diagnostic socket or OBD II DLC.
  2. Top edge: COM connector for 25' wire link between Head and MoDiC.

Scheme 559

Scheme 559

Scheme 560

Scheme 560

The diagnostic head contains a status LED and a data recorder button (future use) on the side.

If the flight recorder button is pressed, the head goes into the record mode and communication between the head and the MoDiC is interrupted (make sure button is in the off position).

Connect the head with the 20 pin connector to the vehicle with the ignition key off. Switch ignition on and watch the Head Status LED. The status LED provides the following information in regards to the diagnostic head operation

Scheme 561

Scheme 561
LED DISPLAYINDICATION
OffNo power supply to the diagnostic head
Green - short flashesDiagnostic head establishing the communication link
Green - long flashesNo connection possible
Green - steadyDiagnostic head communication link established
Orange - slow flashingFaulted connection
Orange - rapid flashingTemperature limit of Diagnostic head exceeded

FLIGHT RECORDER

Temperature Monitoring

If the temperature threshold of the diagnostic head is reached, a warning display will appear on the MoDiC screen. The diagnostic procedure should be terminated and the head allowed to cool down.

If the temperature threshold is exceeded, the diagnostic head will switch itself off and the connection to the MoDiC will be terminated. Once the head has cooled down, the diagnostic link can be reestablished.

Serial Interface Cable

25 feet cable for a hard wire connection between the diagnostic head and the MoDiC.

Scheme 562

Scheme 562: Serial Interface Cable

DC Power Supply

External power supply cable for the MoDiC/Docking Station.

Allows vehicle 12 volt power supply to power the MoDiC or docking station.

Scheme 563

Scheme 563: DC Power Supply

Multi-Function Cable (MFK)

MFK 1 and MFK 2 measurement cables used with the MoDiC's measurement system. Both cables are 2 meters long.

Measuring parameters for the cables are similar to the DIS tester's MFK 1 and MFK 2 MFK 1

Scheme 564

Scheme 564: Multi-Function Cable (MFK)

MFK1

Measuring FunctionMeasuring Range
DC Voltage Measurement0.1-50 Volts
AC Voltage Measurement0.1-50 Volts
DC Current Measurement0.2-2 Amps
AC current Measurement0.2-2 Amps
Resistance Measurement0-2 M & Omega
Diode Testing
Frequency Measurement1Hz-100 kHz
Pulse Duration Measurement100 mues-10 s

MFK1

MFK2

Measuring FunctionMeasurement Range
DC Voltage Measurement0.1-500 Volts
AC Voltage Measurement0.1-500 Volts
Frequency Measurement1Hz-100 kHz
Pulse Duration Measurement100 mues-10 s

MFK2

50 AMP Current Clamp

Measurement FunctionMeasurement Range
DC Current Measurement50 Amps
AC Current Measurement50 Amps

50 AMP CURRENT CLAMP

Additional Cable ends supplied with the MoDiC include

  1. Two measuring probes.
  2. Two adapter cables with 2mm probe ends.
  3. Two adapter cables with 2.5mm probe ends.
  4. Two adapter cables with 4mm probe ends.
  5. Two spring clamp adapter ends.

Scheme 565

Scheme 565

Suspend Mode

The MoDiC will switch to the suspend mode after a period of time when no activity has taken place.

The suspend mode is a power saving mode that is designed to save battery power. The MoDiC switches to the suspend mode in three steps as follows

Stage 1 (doze mode): The computer's clock pulse frequency is reduced to save power

Stage 2 (sleep mode): The hard disc is switched to the economy mode to save power.

Stage 3 (suspend mode): All internal components are switched off, but the content of the working memory is saved.

Any of the power-economy stages will be terminated if the touch screen is pressed. The suspend mode can be manually activated or deactivated by pressing the suspend mode button in the control panel.

Detailed Operation Instructions

Refer to the Handbook included with the MoDiC for in-depth setup, initial boot-up and cleaning/maintenance procedures.

Measurement System

The Measurement system is an integral part of the test procedure. It displays automatically when needed by the test schedule.

In E46 diagnosis, measurements are no longer phrased as

.... "connector X 10 pin 1 to connector X 20 pin 2."

Measurement instructions are now provided in the bottom right dialogue box as follows

Voltage Measurement

MFK 1 (+) ON (circuit name)

MFK 1 (-) ON ground

All measurements now relate to circuit name acronyms that are "hot spot" activated (if needed). Nominal values are displayed with the actual measured display. Simply answer the question the system provides in response to the measured value.

Scheme 566

Scheme 566: Voltage Measurement

If you are using a DVOM for measuring the values in place of the DIS/MoDiC MFK leads, you can enter the measured values into the system and follow the test plan as follows

  1. Press the measurement system value display bar to bring up a "key pad".
  2. Enter the measured value into the key pad and press the enter button. The DIS /MoDiC uses the entered values to continue with the test plan.

Scheme 567

Scheme 567

Before diagnosis is terminated, a dialogue box reminds you to print the diagnosis report.

The dialogue box offers the following options

  1. "Terminate" ends diagnosis without printing the diagnosis report.
  2. "Diagnosis Report" prints the report before terminating.

If you forget to print the report before terminating diagnosis, it will be stored and can be printed by selecting "Stored Diagnosis Report" from the Print menu.

Control Unit Functions

Troubleshooting information is also available in the form of Control Module ID, status lists, component activation, read and clear fault memory by pressing the Control Unit functions button.

Only control modules identified during the short test can perform control unit functions

Scheme 568

Scheme 568: Control Unit Functions

Service Functions

Service Functions are special procedures used to make adjustments or complete repairs. Service functions are found in the Function Selection page of the Diagnosis Program. An example of some service functions include

  1. Idle Speed Adjustment
  2. EWS-DME Calibration
  3. Automatic Transmission Fluid Level Check
  4. Clearing control Unit Adaptation Values
  5. Resetting the Service Interval Indicator
  6. Reading the Service Interval Coding Data

Scheme 569

Scheme 569