Volkswagen Workshop Service and Repair Manuals

Special tools, testers, measuring instruments and auxiliary items required

• ◆ Fault reader V.A.G 1551 or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3
• ◆ Ignition tester V.A.G 1767 or V.A.G 1367 with HT pick-up clamp V.A.G 1367/8

Check conditions

• ● Coolant temperature at least 80 °C
• ● No faults must be stored in fault memory
  , interrogating fault memory

Test sequence

• ‒ → Connect ignition tester V.A.G 1767 or ignition tester V.A.G 1367 with HT pick-up clamp V.A.G 1367/8.
• ‒ Connect fault reader V.A.G 1551 (V.A.G 1552). Start engine and select "Address word" 01 of engine control unit. When doing this the engine must be running at idling speed.
  (Connecting fault reader and selecting engine control unit => Page 01-4 .)

• ‒ Press keys 0 and 4 for the function "Introduction of basic setting" and confirm entry with Q key.

• ‒ Press keys 0, 0 and 1 for "Display group number 1" and confirm entry with Q key.

Do not continue with check until an 8 digit number block 00000000 appears in the 4th display zone.

Note:

If at one or more positions a 1 is displayed in display zone 4, the test conditions have not been fulfilled:

; Relevance of figures in 8 digit number block

• ‒ The engine control unit raises the idling speed to 1100...1500 rpm.
• ‒ Check ignition timing.
       Specification: 3...8 ° before TDC1)
• ‒ Adjust ignition timing by turning distributor, if necessary.
       Adjustment figure: 6±1 ° before TDC1)

     1)     Up-to-date specifications:

=> Emissions test binder

• ‒ Press ⇒ key.
• ‒ Press keys 0 and 6 for the function "End output" and confirm entry with the Q key.