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Volkswagen Workshop Service and Repair Manuals

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Checking engine operating modes > < Checking and adjusting CO content

Golf Mk1

Motronic MP 9.0 injection and ignition system
Motronic injection and ignition system
Performing basic setting

Note:

The basic setting matches the Motronic control unit to the the throttle valve control part with the ignition switched on.

Special tools, testers and auxiliary items

  • ◆ Fault reader V.A.G 1551 or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3

Test sequence

  • ‒ Switch on ignition.
  • ‒ Interrogate fault memory, if necessary, repair fault and erase fault memory , interrogating and erasing fault memory.
  • ‒ Then:
 
→ Indicated on display:
Rapid data transfer     HELP
Select function XX
  • ‒ Input 04 for "initiate basic setting" and confirm with Q.
 
→ Indicated on display:
Basic setting     HELP
Input display group number XX
  • ‒ Input 98 for "Display group number" and confirm with Q.
 
→ Indicated on display:
(1...4 = Display zones)
System in basic setting 98      ⇒
     1     2     Leerlauf     ADP. läuft
 
→ Indicated on display:
(1...4 = Display zones)
System in basic setting     98      ⇒
     1     2     leerlauf          ADP. i.O

Note:

After confirming the display group number 98 the throttle valve positioner will be moved to the min., max. and three intermediate positions and the control unit will store each individual throttle valve angle in the permanent memory. The throttle valve will then remain in the star position.

Should this function not be able to be carried out check throttle valve body => Page 24-26

  • ‒ Terminate engine basic setting by pressing the ⇒key.
  • ‒ Input 06 for "End output" and confirm with Q.

Checking engine operating modes > < Checking and adjusting CO content