A/C control head coding
| 1st and 2nd digits (where applicable) | |
| Code | Description |
| 00 _ _ _ | not used |
| 3rd digit | |
| Code | A/C compressor type |
| 0 _ _ | Zexel |
| 1 _ _ | Nippondenso |
| 4th digit | |
| Code | Engine application |
| _ 5 _ | 5-cylinder |
| _ 6 _ | 6-cylinder |
| 5th digit | ||
| Code | Market version | Engine type |
| _ _ 2 | USA/Canada | Gasoline |
Zexel A/C compressors have been installed from the start of production. During m.y. : 1996 , a new Nippondenso A/C compressor is installed as a running change on all vehicles with 6-cylinder engines.
On the Nippondenso compressor, A/C compressor speed sensor -G111- - has been eliminated. The compressor is instead protected by an overheat fuse in A/C clutch -N25-.
The A/C control headA/C control head -E87- must be coded for the specific vehicle application, including the type of A/C compressor installed (Zexel or Nippondenso).
Vehicles equipped with a Nippondenso compressor must have an A/C control headA/C control head -E87- identified with index letter "K" or higher to allow for correct coding.
For correct part number and application of replacement A/C control headA/C control head -E87- Refer to latest parts information.
The software version displayed with A/C control head identification (shown here as "DXX") has no significance for Service Department use.
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 (0-00127) |
-- Using keypad on Scan Tool: VAG1551 , enter code for A/C control head according to compressor type, engine cylinder configuration and market version A/C control head coding .
Examples:
| Coding | Market version | Compressor | Engine |
|---|---|---|---|
| 00062 | USA/Canada | Zexel | 6-cyl. gasoline |
| 00162 | USA/Canada | Nippondenso | 6-cyl. gasoline |
-- Press Q button to confirm input.
A/C control head identification and coding are displayed
| 4A0 820 043 A Klima-Vollautomat DXX → Coding 00062 WSC 23890 |
-- Press → button.
Vehicles equipped with a Nippondenso compressor must have an A/C control headA/C control head -E87- identified with index letter "K" or higher to allow for correct coding.
For correct part number and application of replacement A/C control headA/C control head -E87-
Indicated on display
| Rapid data transfer HELP Select function XX |
-- Carry out basic setting FUNCTION 04, BASIC SETTING VAG 1551 .
-- Check DTC memory DIAGNOSTIC TROUBLE CODE MEMORY, CHECKING AND ERASING .