romus
10-20-2005, 06:20 PM
May be yesterday's news but it's new to me :) I found it on www.m5board.com, so thought i'd share it with you guys. Hope it's useful or at least interesting.
Getting into the Test Codes:
============================
Push OBC buttons 1000 and 10 together. You will see the word Test. By pressing a combination of the 10 and 1's you can enter Test Codes from 1 to 21. After entering the number press R/S and you will get a continuous display of the test function. To cancel, just press any of the OBC function keys.
List of Available Tests:
========================
Test Number Description
1 Display Test (all LCDs and LEDs activate)
2 Current Consumption in litres / 100 km
3 Current Consumption in litres / hour
4 Average consumption (used in calculating range)
5 Current Range
6 Not used (this function is active on some, but not sure of the purpose)
7 Fuel Remaining in Tank (litres)
8 Current speed (km/h)
9 System Voltage at Terminal R
10 Country / Language
11 Units / am.pm
12 Average speed (km/h) for calculating ETA
13 ETA
14 Date of software / mask of OBC
15 Production Diagnosis
16 Production Diagnosis
17 Display Vehicle Specific Data
18 Alarm Changeover (continuous vs. intermittent)
19 Lock / Unlock all functions (Sum of month and date to unlock or lock)
20 Correction Factor for OBC Fuel Consumption
21 Reset all defect codes, date and time
!!! You need to unlock the OBC before you can change the settings. !!!
How to lock and unlock the OBC:
===============================
To unlock the OBC, first press the date key, and add the month and day together. So, if the date is displayed as "0704", the result is "11".
Go to test 19 by pressing the 1000 and 10 buttons together, and then typing in the test number (19)·
You will see the word "LOCK" displayed. Type in the result from step 1 above, and press S/R·
If you display test 19 again, it will now display "FREI", indicating the system is now unlocked.
To lock the system again, go to test 19, and press the little button on the top left hand corner of the OBC (F/C).
How to correct your fuel consumption readout:
=============================================
If your car is anything like mine, the fuel consumption readout will be way out. But it can be adjusted! First, you need to measure your fuel consumption as accurately as possible, by filling up the tank, driving until nearly empty, filling again, and figuring out your fuel consumption, in either litres / 100 kms, or MPG. At this point, also note what the fuel consumption as reported by the OBC is. You need both figures to make the adjustment. Once you have that accurate figure, follow the following procedure:
Unlock the OBC as described above.
Go to test 20.
This is the existing fuel consumption constant used in the calculation.
Find the ratio between the old consumption reading, and the actual consumption reading:
For litres per 100kms, this is the actual consumption divided by the reported consumption.
For MPG, it is the opposite. Ie. It is the reported conumption divided by the actual consumption.
Now multiply that ratio with the existing fuel consumption constant, the result is the new constant.
Simply type in the new constant, and press S/R NOTE: Some claim that for some reason, if you don't drive your car for a day or two, the constant will reset back to 1000.
Getting into the Test Codes:
============================
Push OBC buttons 1000 and 10 together. You will see the word Test. By pressing a combination of the 10 and 1's you can enter Test Codes from 1 to 21. After entering the number press R/S and you will get a continuous display of the test function. To cancel, just press any of the OBC function keys.
List of Available Tests:
========================
Test Number Description
1 Display Test (all LCDs and LEDs activate)
2 Current Consumption in litres / 100 km
3 Current Consumption in litres / hour
4 Average consumption (used in calculating range)
5 Current Range
6 Not used (this function is active on some, but not sure of the purpose)
7 Fuel Remaining in Tank (litres)
8 Current speed (km/h)
9 System Voltage at Terminal R
10 Country / Language
11 Units / am.pm
12 Average speed (km/h) for calculating ETA
13 ETA
14 Date of software / mask of OBC
15 Production Diagnosis
16 Production Diagnosis
17 Display Vehicle Specific Data
18 Alarm Changeover (continuous vs. intermittent)
19 Lock / Unlock all functions (Sum of month and date to unlock or lock)
20 Correction Factor for OBC Fuel Consumption
21 Reset all defect codes, date and time
!!! You need to unlock the OBC before you can change the settings. !!!
How to lock and unlock the OBC:
===============================
To unlock the OBC, first press the date key, and add the month and day together. So, if the date is displayed as "0704", the result is "11".
Go to test 19 by pressing the 1000 and 10 buttons together, and then typing in the test number (19)·
You will see the word "LOCK" displayed. Type in the result from step 1 above, and press S/R·
If you display test 19 again, it will now display "FREI", indicating the system is now unlocked.
To lock the system again, go to test 19, and press the little button on the top left hand corner of the OBC (F/C).
How to correct your fuel consumption readout:
=============================================
If your car is anything like mine, the fuel consumption readout will be way out. But it can be adjusted! First, you need to measure your fuel consumption as accurately as possible, by filling up the tank, driving until nearly empty, filling again, and figuring out your fuel consumption, in either litres / 100 kms, or MPG. At this point, also note what the fuel consumption as reported by the OBC is. You need both figures to make the adjustment. Once you have that accurate figure, follow the following procedure:
Unlock the OBC as described above.
Go to test 20.
This is the existing fuel consumption constant used in the calculation.
Find the ratio between the old consumption reading, and the actual consumption reading:
For litres per 100kms, this is the actual consumption divided by the reported consumption.
For MPG, it is the opposite. Ie. It is the reported conumption divided by the actual consumption.
Now multiply that ratio with the existing fuel consumption constant, the result is the new constant.
Simply type in the new constant, and press S/R NOTE: Some claim that for some reason, if you don't drive your car for a day or two, the constant will reset back to 1000.