Test sequence

Connect VAS5051 tester or VAG1551 scan tool and select control module for engine electronics using "address word" 01. See VAS 5051 VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM OR VAG1551 SCAN TOOL (ST), CONNECTING AND SELECTING FUNCTIONS .
Engine must run at idle for this.

When indicated on display:

Fig 1: Identifying Scan Tool Display - Checking Misfire Recognition (1 Of 4)

Press buttons -0- and -8- to select "Read measuring value block" function 08. Press -Q- button to confirm input.

When indicated on display:

Fig 2: Identifying Scan Tool Display - Checking Misfire Recognition (2 Of 4)

Press buttons -0-, -1- and -4- to select "display group number 014" and press -Q- button to confirm input.

When indicated on display:

Fig 3: Identifying Scan Tool Display - Checking Misfire Recognition (3 Of 4)

Check misfire recognition in display fields 3 and 4.

DISPLAY GROUP 014: MISFIRE RECOGNITION

Display fields

Display group 014: Misfire recognition

Display

xxxx/min

xxx%

xxx

---

Indicated

Engine speed (RPM)

Load

Number of combustion misfires

Misfire recognition

Functional range

670 to 6800 RPM

12 to 100%

activated

locked

Specified value

720 to 820 RPM ⁽¹⁾

12 to 26%

0 to 12

activated

670 to 770 RPM ⁽²⁾

Notes

If the specified value is exceeded: Check combustion misfires of the individual cylinders . See CHECKING MISFIRE RECOGNITION OF INDIVIDUAL CYLINDERS .

⁽¹⁾	Front Wheel Drive Vehicles

⁽²⁾	All-Wheel Drive Vehicles

If specified value is obtained:

Indicated on display (function selection):

Fig 4: Identifying Scan Tool Display - Checking Misfire Recognition (4 Of 4)