Control Module HVAC: Testing and Inspection

Code Control Module (Function 07)

A/C control head -E87- coding, vehicles 1996

NOTE:
- A/C control head coding 1997.
- A/C control head coding 1998.

A/C control head -E87- coding shows market application, compressor type and engine type.

NOTE:
- Zexel A/C compressors are installed from start of production. During m.y. 1996, Nippondenso type compressors are installed as a running change. These compressors are not equipped with A/C speed sensor G111.
- Each time A/C control head -E87- is coded, basic setting must be performed. [1][2]Basic Setting (Function 04)
- If a the display of a newly installed A/C control head -E87- flashes after switching ignition on (for approximately 2 minutes), code the control head and execute basic setting.

- Connect Scan Tool VAG1551 or 1552 in operating mode -1-, enter address word 08 "A/C Heating Electronics" and move forward in program until "select function XX" appears in the display.
- Switch on printer by pressing the PRINT button (indicator lamp in button comes on).

Indicated on display

- Press buttons -0- and -7-.

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

- Press -> button.

Coding m.y. 1996:







NOTE:
- Coding example, m.y. 1996: 0 0 1 6 2
0 = open
0 = open
1 = compressor w/o Compressor Speed Sensor -G111-
(0 = compressor with -G111-)
6 = 6-cyl. engine
2 = gasoline engine USA/CDN

A/C control head -E87- coding, vehicles 1997

NOTE: A/C control head coding 1996.







NOTE:
- Coding example, m.y. 1997: 0 4 1 4 2
0 = open
4 = Audi A4
1 = compressor w/o compressor speed sensor -G111-
4 = 4-cyl. engine
(6 = 6-cyl. engine)
2 = gasoline engine USA/CDN

NOTE:
- A/C control heads beginning with Part No. 8L0 820 043 should only be installed in m. 1997 vehicles.
- If a replacement A/C control head -E87- is not coded after installation or if an unrecognized code was entered, code "04142" (Audi A4 4-cyl. - USA) is stored.

CAUTION:
- Part numbers are for reference only.
- Always check with your Parts Dept. for the latest information.

Coding example:
- Enter code "00062" by pressing applicable buttons on key pad of VAG1551.

Indicated on display

Code Control Module
Enter code number 00062

- Press -Q- button to confirm input.
- Perform basic setting. [1][2]Basic Setting (Function 04)

NOTE:
- Nippondenso A/C compressors must have A/C control head Part No. index "H" installed to allow coding"00162."
- If an unrecognized code is entered in a control head, it is suppressed and coding "00042" (4-cyl. gasoline engine USA) is then stored.
- When replacing an A/C control head, always refer to the most recent parts information.







A/C control head -E87- (with one display), coding table vehicles 1998 >

NOTE:
- A/C control head coding 1996.
- The following coding table is only valid for A/C control heads with part number 8D0 820 043 after index "K." Additional coding tables and coding A/C control head -E87-.
A/C control heads -E87- with the part number 8D0 820 043 after index "K" have only one display, they are installed in the following vehicles:
- in vehicles with radio navigation system (implemented gradually in m.y. 1998)
- in vehicles with radio navigation system after VIN 200000 of m.y. 1999







Coding example

00140 USA 4 cyl. Left Hand Drive gas engine
00160 USA 6 cyl. Left Hand Drive gas engine