audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Coding control unit > < Final control diagnosis
Simos injection and ignition system (4-cylinder)
Basic setting
Basic setting

With the ignition on and engine not running, the following operationscanbe performed in the "Basic setting" mode (function 04):

  • ◆ Adaption of throttle valve control part to engine control unit
    =>Display group 60
    ( )
  • ◆ Adaption of EGR valve to engine control unit =>Display group 074 ()

With the engine running, the following operation can be performed in the basic setting mode:

  • ◆ Learning process for lambda control

Requirements for operations performed with the engine running:

  • ● No faults stored in fault memory
  • ● Coolant temperature at least 80 °C
  • ● Electrical consumers switched off (radiator fan must not run during the test)

Test sequence

  • ‒ Connect vehicle diagnostic, testing and information system VAS 5051 (or fault reader V.A.G 1551) and select engine electronics control unit by entering address word "01" ( => Page 01-12.)
    When doing this the engine must be idling.
  • ‒ Interrogate and erase fault memory => Page 01-19.
  • ‒ Leave engine idling.
 
→ Indicated on display:
Rapid data transfer     HELP
Select function XX
  • ‒ Enter "04" to select "Basic setting" and confirm with Q key.
 
→ Indicated on display:
Basic setting    Q
Enter display group number XXX
  • ‒ Enter the required Display Group number.

Example:

  • ‒ Enter "000" to select Display Group number 000 and confirm entry with Q key.

Note:

When the display group is selected the ACF valve is closed and the air conditioner compressor is switched off.

 
→ Indicated on display:
System in basic setting 0    Q
1    2    3    4    5    6    7    8    9    10

Notes:

  • ◆ In Display Group 000 the measured values are shown in decimal form.
  • ◆ If the printer is switched on, the current display can be printed out.
  • ◆ Other display groups can be selected as follows:

Display group

V.A.G 1551

VAS 5051

Higher

Press key 3

Press skey

Lower

Press key 1

Press tkey

  • ‒ If all the display zones show the specified values, press the ⇒ key.
 
→ Indicated on display (function selection):
Rapid data transfer    HELP
Select function XX

Display Group 000 (decimal readouts)

▪ Engine idling (coolant temperature not below 80 °C)

1

2

3

4

5

6

7

8

9

10

◂ Display zones

Specification

Corresponds to

Learned value for mixture formation at part throttle

102...154

-10...10%

Learned value for mixture formation at idling speed

127...128

-0.5...0.5 %

Control value for mixture formation

90...167

-15...15 %

Learned value for idling speed control

102...154

-10...10 %

Idling speed control

90...167

-15...15 %

Throttle valve angle

2...12

0.94...5.6°

Voltage of on-board electrical system (supply voltage)

110...147

11...15 V

Engine speed (idling speed)

21...30

700...960 rpm

Engine load (without electrical consumers)

38...103

15...40 %

Coolant temperature (requirement for basic setting)

171...217

80...115 °C

Coding control unit > < Final control diagnosis