System test, initiating: Notes

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Special tools and equipment

Fig 1: Identifying Vehicle Diagnosis, Testing And Information System VAS 5051

Courtesy of VOLKSWAGEN UNITED STATES, INC.

VAS5051 Vehicle diagnosis, testing and information system with VAG5051/1 Adapter

WARNING:

Test equipment must always be secured to the rear seat and operated from there by a second person.
If test and measuring equipment is operated from the passenger seat, the person seated there could be injured in the event of an accident involving deployment of the passenger-side airbag.

Requirements

VAS5051 tester connected and vehicle On Board Diagnostic (OBD) -01 Engine electronics- selected.
Coolant Temperature at least 80°C.
Vehicles with automatic transmission selector lever in P or N.

Work sequence

Start engine, and let run at idle.

Fig 2: Diagnostic System VAS 5051: Display

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Display on VAS5051:

In selection -1-, click on the diagnostic function "04 - Basic setting".

Fig 3: Diagnostic System VAS 5051: Display

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Display on VAS5051:

1 - Enter display group

max. input value = 255

Select function "094" in button field -2- for "display group number 094" and press Q button to confirm input.

Fig 4: Diagnostic System VAS 5051: Display - Display Fields

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Display on VAS5051:

Activate basic setting by pressing button A.
Depress accelerator pedal and brake pedal at same time; engine speed increases to approx. 1900 RPM.

Requirement

Accelerator pedal and brake pedal depressed at same time, engine runs at approx. 1900 RPM.

Check specified values in display fields -3- and -4-.

	Display fields
	1	2	3	4
Display group 094: Camshaft adjustment (intake)
Display	xxxx/min	---	---	---
Indicated	Engine speed (RPM)	Camshaft adjustment	Diagnostic condition	Diagnostic condition
Functional range			Test OFF Test ON System OK System not OK	Test OFF Test ON System OK System not OK
Specified value	1900 RPM	°Crankshaft rotation	System OK	System OK
Note			If "System not OK" is displayed: Check camshaft adjustment (intake). Refer to Camshaft adjustment (intake), checking

Click on ← button

Fig 5: Diagnostic System VAS 5051: Display

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Display on VAS5051:

1 - Enter display group

max. input value = 255

Select function "096" in button field -2- for "display group number 096" and press Q button to confirm input.

Fig 6: Diagnostic System VAS 5051: Display - Display Fields

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Indicated on display of VAS 5051:

Activate basic setting by pressing button -A-.
Depress accelerator pedal and brake pedal at same time, engine speed increases to approx. 1900 RPM.

Requirement

Accelerator pedal and brake pedal depressed at the same time, engine runs at approx. 1900 RPM.

Check specified values in display fields -3- and -4-.

	Display fields
	1	2	3	4
Display group 096: Valve for camshaft adjustment (exhaust)
Display	xxxx/min	---	---	---
Display	Engine speed	Camshaft adjustment	Diagnostic condition	Diagnostic condition
Functional range		Off On	Test OFF Test ON System OK System not OK	Test OFF Test ON System OK System not OK
Specification	1900 RPM	On	System OK	System OK
Note			If "System not OK" is displayed: Check camshaft adjustment (exhaust). Refer to Camshaft adjustment (exhaust), checking

Click on ← button.
Switch over to Read measured value block.