Test sequence

• Connect testing and information system VAS5051. See VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECTING FUNCTIONS . Select vehicle system "01 - Engine electronics". Engine must be running at idling speed.

Indicated on display:

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

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• Press buttons -0- and -8- to select "Read Measuring Value Block" function 08 and press -Q- button to confirm input.

Indicated on display:

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

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• Press buttons -0-, -1- and -4- to input "display group number 14" and press -Q- button to confirm input.

Indicated on display:

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

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• Check misfire detection.
  DISPLAY GROUP 014: MISFIRE DETECTION
  
  

  	Display zones
  	1	2	3	4
  Display group 014: Misfire detection
  Display	xxx rpm	xx.x%	xxx	---
  Display	Engine speed	Load	Total misfires	Misfire detection
  Range	min.: 550 RPM max.: 7200 RPM	min.: 0 max.: 100		activated blocked
  Specif. value	600 to 820 RPM	xx.x%	0 to 5	activated
  Note:	---	---	If the specified value is not reached:  See EVALUATING DISPLAY GROUPS 014, 015 AND 016 DISPLAY FIELD .	---

If the specified value is reached:

• Press --> button.

Indicated on display (function selection):

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

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If specified value is not obtained:

• Change to display group 015 by pressings button.