SEAT Workshop Service and Repair Manuals

Test conditions

• ● Engine is OK mechanically.
• ● No fault must be stored in fault memory , Interrogating and erasing fault memory.

Special tools, workshop equipment, 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

Test sequence

• ‒ 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 01-9.)

• ‒ Press keys 0 and 8 for the function "Read measured value block" and confirm entry with Q key.

• ‒ Press keys 0, 1 and 4 for "Display group number 14" and confirm entry with Q key.

• ‒ Check the total number of misfires in display zone 3.
• ‒ Check the misfire recognition status in display zone 4.

If the specifications are obtained:

• ‒ Press ⇒key.

• ‒ Press keys 0 and 6 for the "End output" function and confirm input with the Q key.
• ‒ Switch off ignition.

If the specifications are not attained:

• ‒ Change to display group 15 as follows:
• ‒ Press key 3 (V.A.G 1551) or key ↑(V.A.G 1552).

• ‒ Check the misfiring in display zones 1...3.
• ‒ Check the misfire recognition status in display zone 4.

If the specifications are obtained:

• ‒ Change to display group 16 as follows:
• ‒ Press key 3 (V.A.G 1551) or key ↑(V.A.G 1552).

• ‒ Check the misfiring in display zones 1...3.
• ‒ Check the misfire recognition status in display zone 4.

• ‒ Press ⇒key.
• ‒ Press keys 0 and 6 for the "End output" function and confirm input with the Q key.
• ‒ Switch off ignition.

Evaluating display group 14, display zone 3 - total number of exhaust damaging misfires

Evaluating display groups 15 and 16, display zones 1...3 - total number of exhaust damaging misfires Cyl. 1 ... Cyl.6