Control Panel/Module Coding

CONTROL PANEL/MODULE CODING





The IHKA control panel/module is coded with the central coding key (ZCS) using the DIS or MoDiC. The ZCS coding procedures is the same as on previous systems.

After coding a new or replacement control module, disconnect it from the battery completely (unplug the control module from the vehicle wiring harness) for a minimum of 10 seconds. This allows the new coding data to overwrite any previous coding data.

Coding Conversion Features
Coding conversions provide flexibility for various system functions and allow a vehicle owner to customize the car's climate control system.

The E36 IHKA is capable of the following conversions:
- Temperature C/F
- Blower enhancement - increase the blower default speed (only possible from software version 37, introduced September 1995)
- Air recirculation - retain the recirculate air function for use at restart.

BASIC TROUBLESHOOTING
- Always personally verify the customer complaint.
- Always verify that the complaint is truly a system malfunction.
- Perform a Quick Test to determine if the vehicle systems have logged fault codes.
- Call up the faulted system or appropriate test schedule to verify the correct control module is installed in the car.
- Follow the Diagnostic Information System (DIS) on screen instructions and perform all tests as specified.
- Use the DIS and fault symptom diagnostic procedures as trained.
- Follow the appropriate test module procedures for systems that malfunction but fail to set faults in memory.