Control Module HVAC: Testing and Inspection

Control Module, Coding (Function 07)

Coding A/C Control Head -E87-

NOTE:
- The basic setting must be performed after each coding operation.
Basic Setting (Function 04)

- If the display of a newly installed A/C Control Head -E87- flashes (for approx. 2 minutes) after the ignition has been switched on, code the A/C Control Head -E87- and perform basic setting.

- Connect VAG 1551 Scan Tool (ST).
Scan Tool Connecting and Initial Checks

- Press buttons -0- and -8- to insert "AC/Heating Electronics" address word 08 and advance program until "Select function XX" appears on display.
Scan Tool Connecting and Initial Checks

- Switch printer on by pressing PRINT button (indicator lamp in button comes on).

Indicated on display


Rapid data transfer HELP
Select function XX


- Press buttons -0- and -7- to select "Code Control Module" function 07.

Indicated on display


Rapid data transfer Q
07 - Code Control Module


- Press -Q- button to confirm input.

Indicated on display


Code Control Module
Enter code number XXXXX


NOTE: The -> button is used to advance through the program sequence.

- Code A/C Control Head -E87- according to vehicle type, engine and export version.
- Press -Q- button to confirm input.

After a short delay, the control module identification (version), coding and dealership number (where the control module was coded) are displayed ("Klimavollautomat" = fully automatic air conditioner).


4B0820043XA6KlimavollautomatDXX ->
Code XXXXX WSC ZZZZZ


- Perform basic setting.
Basic Setting (Function 04)

NOTE:
- Any invalid codes entered in the A/C Control Head -E87- are ignored and coding "00001"is stored as a default.
- Allocation of the A/C Control Head -E87- (dependent on vehicle equipment).