Test sequence

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Connect V.A.G 1551 scan tool ((V.A.G 1552). Start engine and select "Address word" 01 of engine control module. Engine must be running at idling speed.(Connecting scan tool and selecting engine control module, see VAG1551 SCAN TOOL, CONNECTING AND SELECTING ENGINE CONTROL MODULE .)

Indicated on display:

Fig 1: Identifying Scan Tool Display - Misfiring Recognition (1 Of 5)

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

Indicated on display:

Fig 2: Identifying Scan Tool Display - Misfiring Recognition (2 Of 5)

Courtesy of VOLKSWAGEN OF AMERICA, INC.

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

Indicated on display:(1 to 4 Display zones)

Fig 3: Identifying Scan Tool Display - Misfiring Recognition (3 Of 5)

Courtesy of VOLKSWAGEN OF AMERICA, INC.

Check total number of misfires in display zone 3.

Check misfire recognition status in display zone 4.

DISPLAY GROUP 14: IGNITION, MISFIRE RECOGNITION (WHILE DRIVING)

	Display zones
	1	2	3	4
Display group 14: Ignition, misfire recognition (while driving)
Display	xxxx rpm	xxx.x%	xxx	Activated Blocked
Indicated	Engine speed (in 40 steps)	Engine load	Exhaust damaging misfires (Total)	Misfire recognition status
Specification	640 to 6500 rpm	10.0%	0	activated
	---	---	If the specification is not obtained, see EVALUATING DISPLAY GROUP 14, DISPLAY ZONE 3 - TOTAL NUMBER OF EXHAUST DAMAGING MISFIRES .

If the specifications are obtained:

Press -->key.
Press keys 0 and 6 for "End output" function and confirm input with Q key.
Switch ignition off.

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).

Indicated on display:(1 to 4 Display zones)

Fig 4: Identifying Scan Tool Display - Misfiring Recognition (4 Of 5)

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Check misfiring in display zones 1 to 3.

Check misfire recognition status in display zone 4.

DISPLAY GROUP 15: IGNITION, MISFIRE RECOGNITION (WHILE DRIVING)

	Display zones
	1	2	3	4
Display group 15: Ignition, misfire recognition (while driving)
Display	xxx	xxx	xxx	Activated Blocked
Indicated	Exhaust damaging misfires Cyl. 1	Exhaust damaging misfires Cyl. 2	Exhaust damaging misfires Cyl. 3	Misfire recognition status
Specification	0	0	0	activated
Specification	If the specification is not obtained, see Evaluating display groups 15, display zones 1 to 3 and display group 16, display zone 1 - total number of exhaust damaging misfires Cyl. 1 to Cyl.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).

Indicated on display:(1 and 4 Display zones)

Fig 5: Identifying Scan Tool Display - Misfiring Recognition (5 Of 5)

Courtesy of VOLKSWAGEN OF AMERICA, INC.

Check misfiring in display zones 1 to 3.

Check misfire recognition status in display zone 4.

DISPLAY GROUP 16: IGNITION, MISFIRE RECOGNITION (WHILE DRIVING)

	Display zones
	1	2	3	4
Display group 16: Ignition, misfire recognition (while driving)
Display	xxx			activated deactivated
Indication	Emissions damaging misfire cyl. 4			Status of misfire recognition
Specification	0			activated
	If the specification is not obtained, see Evaluating display groups 15, display zones 1 to 3 and display group 16, display zone 1 - total number of exhaust damaging misfires Cyl. 1 to Cyl.4 .

Press -->key.
Press keys 0 and 6 for "End output" function and confirm input with Q key.
Switch ignition off.