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Encoding control unit > < Final control diagnosis

A4 Mk1

Motronic fuel injection and ignition system (6 cyl.)
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 unit to the engine control unit=> Display Group 60
    ()

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

  • ◆ Learning process of the Lambda control
  • ◆ Fault finding by selective activation and deactivation of the Lambda control => Display Group 99

Test conditions for operations with engine running

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

Test sequence

  • ‒ Connect up vehicle diagnosis, measurement and information system VAS 5051 or fault reader V.A.G 1551 and select engine electronics control unit with "Address word" 01 .
    When doing this the engine must be running at idle speed
  • ‒ Interrogate fault memory . The fault memory must be clear. If necessary, rectify any faults and erase the fault memory. Switch off the engine, then start up again. Take vehicle for a test drive and interrogate the fault memory again to make sure it is clear.
  • ‒ Leave engine idling.
 
→ Display readout:
Rapid data transfer    HELP
Select function XX
  • ‒ Enter "04" to select "Start basic setting" and confirm with Q key.
 
→ Display readout:
Starting basic setting         Q
Enter display group number XXX
  • ‒ Enter the required display group number.

Example:

  • ‒ Enter "000" to select "Display Group 000" and confirm entry with the Q key.
 
→ Display readout:
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 on the record slip.
  • ‒ Run engine at idling speed for a few minutes, coolant temperature at least 80 oC.
  • ‒ If all the display zones show the specified values, press the ⇒ key.
 
→ Display readout (function selection):
Rapid data transfer      HELP
Select function XX

Display group 000 (decimal readouts)

▪ Engine idling (coolant temperature not less than 80 oC)

1

2

3

4

5

6

7

8

9

10

◂ Display zones

Specified value

Corresponds to

Learned value for mixture formation, Bank 2

77...179

-10...10 %

Learned value for mixture formation, Bank 1

77...179

-10...10 %

Learned value for mixture formation, Bank 2
(if outside tolerance, perform test drive)

115...141

-10...10 %

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

115...141

-10...10 %

Learned value for torque loss at idle

102...169

-5...8 %

Idling torque

102...154

-5.0...5.0 %

Throttle valve angle

1...8

0.5...3.0 %

Engine speed (idling speed) 1) 2)

67...77

670...770rpm

Engine load (no consumption units)

18...37

14...28 %

Coolant temperature (requirement for basic setting)

180...205

80...105 oC

    1)    Current values:

=> Exhaust Emissions Check binder

2)    Country specified value Japan: Specified value 65...75 equals 650...750 rpm

Encoding control unit > < Final control diagnosis