EXPERTOS CON CONOCIMIENTOS DE MEJORES PRÁCTICAS

gines without OBD

Special tools and workshop equipment required

♦ Diesel tester -V.A.G

1743-♦ Engine speed adapter -VAS

5087-Golf 2004 ➤ , 5087-Golf Plus 2005 ➤ Maintenance - Edition 11.2009

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♦ Adapter cable -VAS

5087/3-Note

♦ All test conditions and data required for exhaust emissions test: ⇒ Data sheets for exhaust emission test

♦ If possible, the test should be completed outdoors following a road test. If this is not possible for various reasons (weather, excessive noise in residential areas), then the test can be car‐

ried out in a workshop.

♦ To reduce noise levels, the bonnet should be closed on first catch during tests.

Performing visual check of components influencing emissions

⇒ Data sheets for exhaust emission test – Perform visual check for:

♦ Installation

♦ Completeness

♦ Leakage

♦ Damage

Note

Faults found are to be rectified.

With ignition switched off, connect testers as follows:

– Pull on handbrake.

– Manual gearbox: Gear lever in neutral.

– Automatic gearbox: Selector lever in position “P” or “N”.

– Connect diesel tester -V.A.G 1743- according to operating in‐

structions with ignition switched off.

Connect engine speed adapter -VAS 5087- as follows:

Note

♦ Observe operating instructions for engine speed adapter -VAS 5087- !

♦ Strictly follow the safety precautions in the operating instruc‐

tions!

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– Using adapter cable -VAS 5087/3- , connect “Output” of en‐

gine speed adapter -VAS 5087- to pick-up clamp input of diesel tester -V.A.G 1743- .

– Turn switch for number of cylinders to respective number of cylinders.

– Connect a wire from adapter -VAS 5087/1- to -VAS 5087-(socket -VAS 5087/1- ).

– Using the other wires from adapter -VAS 5087/1- make a con‐

nection to the vehicle battery, by connecting:

♦ Red clamp on positive

♦ Black clamp on negative.

– Start engine and run at idling speed.

– Press the ^Start button on engine speed adapter -VAS 5087- . The red signal lamp must flash for about 10 seconds. Then the green signal lamp must light up.

The engine speed must now be displayed on diesel tester -V.A.G 1743- .

If the engine speed is displayed incorrectly or not at all: see “Op‐

erating instructions for VAS 5087”.

Perform exhaust emissions test according to instructions on die‐

sel tester -V.A.G 1743- display.

If the following is indicated on display:

n rpm mode k 1/m T °C XXX XXXX B X.XX XX

Unit ready to carry out measurements.

Checking idling speed:

Idling speed not within specified range:

Note

The idling speed and maximum speed can be checked but not adjusted.

– If the values are not within specified range, a repair measure must be made.

Perform acceleration test:

– Press button for “Acceleration test”.

First, a fresh air comparison is performed.

If the following is indicated on display:

n rpm tB s k 1/m Gas T °C M XXX XXXX . X.XX 0 XX

-Current values for temperature and speed are displayed.

The arrow pointing upwards indicates that the unit is waiting for the throttle burst.

– Depress accelerator pedal fully and hold for specified time.

– Check maximum engine speed (not adjustable).

Golf 2004 ➤ , Golf Plus 2005 ➤ Maintenance - Edition 11.2009

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If the governed speed (maximum speed) is exceeded, lift off accelerator pedal immediately and perform repair measures.

– If the values are not within specified range, a repair measure must be made.

If the unit detects a valid throttle burst (the speed increases con‐

tinually during measuring period tx), the following is indicated on display:

If the following is indicated on display:

n rpm tB s k 1/m Gas T °C M XXX XXXX . . 1 XX

-The display remains “frozen” during the evaluation phase (ap‐

prox. 15 seconds).

After the evaluation phase, the display changes to:

n rpm tB s k 1/m Gas T °C M XXX XXXX X.XX X.XX 1 XX

-The arrow pointing upwards indicates that the unit is waiting for the next throttle burst.

Repeat test 4 times.

The following is indicated on display after each throttle burst:

n rpm tB s k 1/m Gas T °C M XXX XXXX X.XX X.XX X XX

-In this way, the unit measures and registers at least four throttle bursts. After the fourth and for each further throttle burst se‐

quence, an average of the last three measurements is performed.

The following is indicated on display after each throttle burst:

n rpm tB s k 1/m Gas T °C M XXX XXXX X.XX X.XX X XX

-After 10 seconds, this display changes to:

tB s k 1/m Band width M Average X.XX X.XX X.XX

-After 5 seconds, this display changes to:

tB s k 1/m Band width M Average X.XX X.XX XX

-The display remains until a further throttle burst is performed or another measurement is called up.

If the opacity figures are equal to or less than the prescribed fig‐

ures, cease measurements.

But if the determined opacity figures are over the prescribed fig‐

ures, locate fault during a repair measure Golf 2004 ➤ , Golf Plus 2005 ➤ Maintenance - Edition 11.2009

170

ng yi r p fo riv e at r c o mo em

rcial purposes, in p

artor in whole, is not perm

itted unless authorised by Volkswagen AG. Volkswagen AG does notgua rantee

or acc ept a

ny liab ility w

ith re sp

ec t to

the rmfoinf os csorrectne

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inn

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