Encoding Control Modules That Store the ZCS
Encoding Control Modules That Store The ZCS
The control modules that store the ZCS in the vehicle require manual input of the code. When encoding a replacement, the ZCS must be read from the vehicle ZCS label and entered manually from the keypad of the MoDiC or screen keypad of the DIS.
The control modules that require manual input are:
- IKE = E38,
- EKM = E31,
- Instrument Cluster = E32/34 (After 9-91) & E36 (except 318ti and Z3 Roadster),
- EWS II = 318ti & Z3 Roadster.
NOTE: As long as the defective EWS II control module can communicate with the coding equipment, automatic encoding is possible. Refer to IDC 1015/95-15.
Manual ZCS Input Encoding Procedure:
1. With new control module installed, connect the DIS or MoDiC connector to the 20 pin diagnostic connector. Turn the ignition switch ON.
2. Access the ZCS coding opening menu. Select "1 ZCS Coding" and press the continue arrow.
3. The version ID page is displayed. Make sure it is the most up-to-date version of the software for the encoding procedure. Press the continue arrow.
4. The next screen allows selection of vehicle type. Select the vehicle and press the continue arrow.
5. The next screen provides a list of four choices.
Select "1. Recode" and press the continue arrow.
(The other choices are described later in this section.)
6. The next screen lists the connected ZCS encodable control modules installed in the vehicle.
Select the installed replacement control module and press the continue arrow (for this example it is the KOMBI, which is the instrument cluster.)
7. The next screen then responds by asking if the selection is correct. Press the Yes button to continue.
8. The next screen displays the last 7 digits of the chassis number in the cluster. Since this is a new replacement control module it is displaying the basic information (FFFFFFF) which does not have a specific VIN assigned to it yet.
Enter the last 7 digits of the vehicle identification number using the keypad. When finished double check the display and confirm the input by pressing YES.
9. With the last 7 digits of the VIN entered, the present ZCS code is displayed on the screen. All positions of the ZCS are "F" which indicates the control module is still in the basic state.
The display requests a YES or NO response to change the displayed ZCS. Press the YES button to continue.
10. The next screen displays information about entering/changing the ZCS. Press the continue arrow.
11. The GM segment is displayed (FFFFFFFFF). Press the NO button to refuse display.
12. The next screen displays an expanded keypad for complete entry of the GM segment. This is read from the label of the vehicle.
Carefully enter the complete GM segment, double check all digits as displayed and press the YES button when complete.
13. The next two screens are for entry of the SA and and VN segments.
Enter these numbers in the same manner they were entered for the GM segment.
Double check all digits and Press the YES button to continue.
14. The next screen indicates that the ZCS has been entered into the DIS/MoDiC and automatic coding is ready to start.
Press the YES button.
15. The screen indicates that Automatic Coding is Active.
16. The next screen displays the encoded ZCS.
As noted on the screen the ZCS has changed from the basic uncoded state.
17. The next screen displays "coding key stored for printout. If necessary print out a new ZCS label and affix it into the vehicle specific location.
Coding is completed, Switch off the ignition and wait for 10 seconds. Switch on ignition and check for proper system operation.
Additional Reference
When encoding an E31 EKM reference the following additional information:
- IDC 003/92-14
- TRI 61 01 90 (2109)
- SI 62 05 91 (3246)
These bulletins contain specific information regarding ZCS encoding procedures pertaining specifically to EKM encoding.