Technical Service Bulletin # 610800
Date: 1205012010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 81
Electrical System Parasitic Draw Measurement
SI B61 08 00
General Electrical Systems
May 2012
Technical Service
This Service Information bulletin supersedes SI B61 08 00 dated December 2010.
[NEW] designates changes to this revision
SUBJECT
Closedcircuit Current Measurement
MODEL
All
SITUATION
Increased closedcircuit currents may occur permanently or intermittently and cause the battery to discharge prematurely. The increase in
closedcircuit current may be caused by a faulty control unit, or by the installation of a nonapproved accessory.
In a situation where a vehicle has broken down due to a discharged battery, for diagnostic purposes it is important not to disconnect the
battery. This is because a control unit will be reset if the battery is disconnected. Following a reset, the faulty control unit may start
functioning correctly again, making accurate diagnosis impossible.
[NEW] To correctly measure closedcircuit current, the 50amp clipon probe (previously used with the MIB) or the 100amp clipon probe
can now be used in conjunction with the IMIB (Integrated Measurement Interface Box) to properly diagnosis closedcircuit current
problems over an extended period of time. Connect the amp clipon probe directly to the IMIB Measurement input 3 (green socket). Refer
to SI B04 35 09 for information about the IMIB.
WARRANTY INFORMATION
Not applicable
Procedure
PROCEDURE
1. [NEW] It is very important that any "Power management" faults stored be diagnosed and corrected, and the "Energy Diagnosis"
test plan carried out before the following procedure is performed. Only perform this procedure if closedcircuit current violations are
listed in the "Most Likely Cause" list.
2. [NEW] Check and test the battery using the BMW Battery Tester. Refer to SI B 04 25 02 for information about the BMW Battery.
Refer to SI B61 02 11 for vehicles equipped with advanced onboard battery diagnostics that do not require the BMW Battery
Tester. If necessary, recharge or replace the battery.
3. If the battery is installed in the trunk, open the trunk and turn the lock to the locked position, using a screwdriver or similar
(simulates the trunk lid being closed). The hood must be closed. If the battery is installed in the engine compartment, open the
hood and pull the front lid contact switch fully up, and lock in this position (workshop position, simulates the front lid being closed).
The trunk must be closed.
4. With the exception of the trunk/hood above, all other doors/lids must be closed.
5. In order to simulate normal closedcircuit conditions:
^ Turn the ignition on and activate all electrical consumers, including any accessories. Turn the ignition off. In some cases, a
drive cycle may need to be carried out in order to duplicate a closedcircuit current problem.
^ Open and close the driver's door (simulates somebody getting out).
^ Lock the car, arming the DWA if this is installed.2010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 82
6. In general, closedcircuit current consistently over 50mA must be investigated. Depending on the vehicle's equipment,
closedcircuit current by vehicle model is approximately as shown above.
7. If the nominal milliamp reading is not achieved after the appropriate time, refer to the attached troubleshooting charts. On 2005 MY
vehicles equipped with BMW ASSIST, there are additional current fluctuations as high as 500ma that last for approximately 2
minutes. The fluctuations occur every 15 minutes for up to 14 hours after key off. This is considered normal operation of the TCU,
and should not be considered a fault. This also applies to 2005 TCUs that are installed into earlier production vehicles as
replacement parts.
^ E60, E63, E64 ClosedCircuit Current Troubleshooting E6x up to 9/05 production
^ E60, E61, E63, E64 ClosedCircuit Troubleshooting E6x from 9/05 production
^ E65, E66 ClosedCircuit Current Troubleshooting up to 3/04 production
^ E65, E66 ClosedCircuit Current Troubleshooting from 3/04 production
^ Normal closedcircuit current values for E65, E70, E60, E61, E63, and E64
CLOSEDCIRCUIT CURRENT MEASUREMENT WITH THE IMIB
1.
Note:
This technique with an IMIB is particularly suitable for extended measurements, and provides a graphical readout of recorded
measurements over time. It is recommended for situations where the use of a multimeter provided insufficient information for
problem diagnosis.
The IMIB can be accessed from any ISID within the workshop.2010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 83
2. Select "Activities".
3. Select "Measuring devices".
4. Select from the "Level 1" column, "Measuring devices", and then "OK".
5. From the "Connection manager" screen, select the free IMIB and "Set up connection".
6. The "Measures devices" screen opens on the "Multimeter" tab.
7. Select the "Oscilloscope" tab.
8. Highlight the "CH1" tab to activate channel 1.
9. Under channel 1, "Source", scroll with the arrows to select "Clipon probe 50A".
10. Make sure that clipon probe is not connected to the battery cable, and acknowledge the popup message with "OK".
11. Change the "A/Div" setting to "1A".
12. Under the "Time" selection box, change the "Time/Div" setting based on the number of measurements needed (5 ms to 200 s). The
longer times should be selected when performing the measurement over an extended period.
13. Select "CH 1" under "Cursor" to monitor the actual readings.
14. Select "Record" if performing long term measurements.
15. After performing the measurement, select "Record" again; the display will change to "Compress" and display the recorded data on
the 1 screen.2010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 842010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 852010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 862010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 872010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 882010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 892010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 902010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 912010 BMW 750Li (F02) V84.4L Turbo (N63)
Date: 1205012010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 81
Electrical System Parasitic Draw Measurement
SI B61 08 00
General Electrical Systems
May 2012
Technical Service
This Service Information bulletin supersedes SI B61 08 00 dated December 2010.
[NEW] designates changes to this revision
SUBJECT
Closedcircuit Current Measurement
MODEL
All
SITUATION
Increased closedcircuit currents may occur permanently or intermittently and cause the battery to discharge prematurely. The increase in
closedcircuit current may be caused by a faulty control unit, or by the installation of a nonapproved accessory.
In a situation where a vehicle has broken down due to a discharged battery, for diagnostic purposes it is important not to disconnect the
battery. This is because a control unit will be reset if the battery is disconnected. Following a reset, the faulty control unit may start
functioning correctly again, making accurate diagnosis impossible.
[NEW] To correctly measure closedcircuit current, the 50amp clipon probe (previously used with the MIB) or the 100amp clipon probe
can now be used in conjunction with the IMIB (Integrated Measurement Interface Box) to properly diagnosis closedcircuit current
problems over an extended period of time. Connect the amp clipon probe directly to the IMIB Measurement input 3 (green socket). Refer
to SI B04 35 09 for information about the IMIB.
WARRANTY INFORMATION
Not applicable
Procedure
PROCEDURE
1. [NEW] It is very important that any "Power management" faults stored be diagnosed and corrected, and the "Energy Diagnosis"
test plan carried out before the following procedure is performed. Only perform this procedure if closedcircuit current violations are
listed in the "Most Likely Cause" list.
2. [NEW] Check and test the battery using the BMW Battery Tester. Refer to SI B 04 25 02 for information about the BMW Battery.
Refer to SI B61 02 11 for vehicles equipped with advanced onboard battery diagnostics that do not require the BMW Battery
Tester. If necessary, recharge or replace the battery.
3. If the battery is installed in the trunk, open the trunk and turn the lock to the locked position, using a screwdriver or similar
(simulates the trunk lid being closed). The hood must be closed. If the battery is installed in the engine compartment, open the
hood and pull the front lid contact switch fully up, and lock in this position (workshop position, simulates the front lid being closed).
The trunk must be closed.
4. With the exception of the trunk/hood above, all other doors/lids must be closed.
5. In order to simulate normal closedcircuit conditions:
^ Turn the ignition on and activate all electrical consumers, including any accessories. Turn the ignition off. In some cases, a
drive cycle may need to be carried out in order to duplicate a closedcircuit current problem.
^ Open and close the driver's door (simulates somebody getting out).
^ Lock the car, arming the DWA if this is installed.2010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 82
6. In general, closedcircuit current consistently over 50mA must be investigated. Depending on the vehicle's equipment,
closedcircuit current by vehicle model is approximately as shown above.
7. If the nominal milliamp reading is not achieved after the appropriate time, refer to the attached troubleshooting charts. On 2005 MY
vehicles equipped with BMW ASSIST, there are additional current fluctuations as high as 500ma that last for approximately 2
minutes. The fluctuations occur every 15 minutes for up to 14 hours after key off. This is considered normal operation of the TCU,
and should not be considered a fault. This also applies to 2005 TCUs that are installed into earlier production vehicles as
replacement parts.
^ E60, E63, E64 ClosedCircuit Current Troubleshooting E6x up to 9/05 production
^ E60, E61, E63, E64 ClosedCircuit Troubleshooting E6x from 9/05 production
^ E65, E66 ClosedCircuit Current Troubleshooting up to 3/04 production
^ E65, E66 ClosedCircuit Current Troubleshooting from 3/04 production
^ Normal closedcircuit current values for E65, E70, E60, E61, E63, and E64
CLOSEDCIRCUIT CURRENT MEASUREMENT WITH THE IMIB
1.
Note:
This technique with an IMIB is particularly suitable for extended measurements, and provides a graphical readout of recorded
measurements over time. It is recommended for situations where the use of a multimeter provided insufficient information for
problem diagnosis.
The IMIB can be accessed from any ISID within the workshop.2010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 83
2. Select "Activities".
3. Select "Measuring devices".
4. Select from the "Level 1" column, "Measuring devices", and then "OK".
5. From the "Connection manager" screen, select the free IMIB and "Set up connection".
6. The "Measures devices" screen opens on the "Multimeter" tab.
7. Select the "Oscilloscope" tab.
8. Highlight the "CH1" tab to activate channel 1.
9. Under channel 1, "Source", scroll with the arrows to select "Clipon probe 50A".
10. Make sure that clipon probe is not connected to the battery cable, and acknowledge the popup message with "OK".
11. Change the "A/Div" setting to "1A".
12. Under the "Time" selection box, change the "Time/Div" setting based on the number of measurements needed (5 ms to 200 s). The
longer times should be selected when performing the measurement over an extended period.
13. Select "CH 1" under "Cursor" to monitor the actual readings.
14. Select "Record" if performing long term measurements.
15. After performing the measurement, select "Record" again; the display will change to "Compress" and display the recorded data on
the 1 screen.2010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 842010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 852010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 862010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 872010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 882010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 892010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 902010 BMW 750Li (F02) V84.4L Turbo (N63)
Page 912010 BMW 750Li (F02) V84.4L Turbo (N63)
