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Encoding control unit > < Final control diagnosis

A4 Mk1

Motronic Fuel Injection and Ignition System (6-cyl. Turbo)
Basic setting
Basic setting

With engine stopped and ignition switched on, the following operation can be carried out with the "Function 04" basic setting:

  • ◆ Adaption of the throttle valve control part to the engine control unit =>Display group 60
    ()
  • ◆ Vehicles with automatic gearbox:Learning kickdown function of accelerator position sender to engine control unit =>Display group 63 ()

With the engine running, the following operations can be performed with the basic setting function:

  • ◆ Learning process for lambda control
    => each display group
  • ◆ Fault finding by selective activation and deactivation of the lambda control => display group 99 (please note relevant instructions on page 24-85).

Test conditions for operations with engine running

  • ● No fault stored in fault memory
  • ● Coolant temperature at least 80 °C (display group 4, display zone 3).
  • ● Electrical consumers switched off (radiator fan must not run during the check)
  • ● Air conditioner switched off
  • ‒ Connect the vehicle diagnostic, testing and information system VAS 5051 or fault reader V.A.G 1551 and select the engine electronics control unit with "address word" 01 .
    For this purpose, the engine must be running at idle speed.
  • ‒ Interrogating and erasing fault memory.
    => Page 01-14. No faults must be stored (if necessary, rectify fault, erase fault memory, switch off and re-start engine, perform test drive and interrogate the fault memory again as a check.
  • ‒ Leave engine idling.
 
→ Indicated on display:
Rapid data transfer     HELP
Select function XX
  • ‒ Press keys 0 and 4

(04 is used to select the function "Basic Setting")
 
→ Indicated on display:
Rapid data transfer    Q
04 - Basic setting
  • ‒ Confirm entry with Q key.
 
→ Indicated on display:
Basic setting     Q
Enter display group number     XXX

Note:

Display group number 000 is used here as an example to demonstrate the procedure.

  • ‒ Press key 0 three times.

(000 is used to select the function "Display group 000").

Note:

After the display group number is selected, the activated charcoal filter valve is closed and the air conditioner compressor is switched off.
 
→ Indicated on display:
Basic setting     Q
Enter display group number    000
  • ‒ Confirm entry with Q key.
 
→ Indicated on display:
Basic setting 0    Q
1    2    3    4    5    6    7    8    9    10

Display group 000 (decimal readouts)

▪ Engine idling (coolant temperature not less than 80 °C)

Display zones

Specification

Corresponds to

1

2

3

4

5

6

7

8

9

10

Learned value for mixture formation bank 2

108...148

-4...4 %

Learned value for mixture formation
bank 1

108...148

-4...4 %

Control value for mixture formation, bank 2
(if outside tolerance, perform test drive)

122...136

-4...4 %

Control value for mixture formation, bank 1
(if outside tolerance, perform test drive)

122...136

-4...4 %

Learned value for torque loss at idle

124...145

-3...5 %

Idling torque

126...135

-1.5...1.5 %

Throttle valve angle

1...7

0.4...2.75 %

Engine speed (idling speed)

77...83

750...850 rpm

Engine load (no consumption units)

21...34

15...26%

Coolant temperature (requirement for basic setting)

177...203

85...105 °C

    1)    Current values:

=> Exhaust Emissions Check binder

  • ‒ Run engine at idling speed for a few minutes, coolant temperature at least 80 °C.

Notes:

  • ◆ Each time the PRINT key is pressed, the current display readout is printed out.
  • ◆ Press the C key before selecting further display groups.
  • ‒ If specifications are achieved in all display zones, press the ⇒ key.
 
→ Indicated on display:
Rapid data transfer     HELP
Select function XX
  • ‒ Press keys 0 and 6

(06 is used to select the function "End of output".)
 
→ Indicated on display:
Rapid data transfer    Q
06 - End of     output
  • ‒ Confirm entry with Q key.
 
→ Indicated on display:
Rapid data transfer     HELP
Select function XX

Encoding control unit > < Final control diagnosis